Today's Message Index:
----------------------
1. 12:33 AM - Re: RV7-List Digest: 11 Msgs - 10/16/05 (Paul Walter)
2. 06:42 AM - Re: Engine - cowling (TylerB)
3. 06:47 AM - Re: Engine - cowling (Rhonda Bewley)
4. 07:15 AM - Re: Engine - cowling (Hinde, Frank George (Corvallis))
5. 09:59 AM - Re: Engine - cowling (Dan Checkoway)
6. 10:37 AM - Re: Engine - cowling (Hinde, Frank George (Corvallis))
7. 01:41 PM - Re: Engine - cowling (TylerB)
8. 02:05 PM - CG (DOUGPFLYRV@aol.com)
9. 02:12 PM - Re: Engine - cowling (Dan Checkoway)
10. 02:14 PM - Re: Engine - cowling (Dan Checkoway)
11. 02:48 PM - Re: F-711 Bulkhead pre-punched hole alignment (Brooks Wolfe)
12. 02:55 PM - Re: CG (Norman Younie)
13. 02:58 PM - Re: Engine - cowling (William Gill)
14. 03:06 PM - Re: F-711 Bulkhead pre-punched hole alignment (Andrew Olech)
15. 03:15 PM - Re: Engine - cowling (Darrell Reiley)
16. 07:21 PM - Re: Re: RV7-List Digest: 11 Msgs - 10/16/05 (Frank Stringham)
Message 1
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| Subject: | Re: RV7-List Digest: 11 Msgs - 10/16/05 |
--> RV7-List message posted by: "Paul Walter" <pdwalter@bigpond.net.au>
Hi guys,
As a first time builder,
I was wondering if any one actually produces a DVD series that actually
takes you through the building process step by step showing builders how to
construct tye RV 7.
thank you
Paul Walter
----- Original Message -----
From: "RV7-List Digest Server" <rv7-list-digest@matronics.com>
Subject: RV7-List Digest: 11 Msgs - 10/16/05
> *
>
> ==================================================
> Online Versions of Today's List Digest Archive
> ==================================================
>
> Today's complete RV7-List Digest can also be found in either of the
> two Web Links listed below. The .html file includes the Digest formatted
> in HTML for viewing with a web browser and features Hyperlinked Indexes
> and Message Navigation. The .txt file includes the plain ASCII version
> of the RV7-List Digest and can be viewed with a generic text editor
> such as Notepad or with a web browser.
>
> HTML Version:
>
>
> http://www.matronics.com/digest/rv7-list/Digest.RV7-List.2005-10-16.html
>
> Text Version:
>
> http://www.matronics.com/digest/rv7-list/Digest.RV7-List.2005-10-16.txt
>
>
> ================================================
> EMail Version of Today's List Digest Archive
> ================================================
>
>
> RV7-List Digest Archive
> ---
> Total Messages Posted Sun 10/16/05: 11
>
>
> Today's Message Index:
> ----------------------
>
> 1. 12:34 AM - Re: Engine - cowling (Paul Walter)
> 2. 07:39 AM - Re: Engine - cowling (Charlie England)
> 3. 09:13 AM - Re: Engine - cowling (Dan Checkoway)
> 4. 02:19 PM - Re: Engine - cowling (Paul Walter)
> 5. 03:04 PM - F-711 Bulkhead pre-punched hole alignment (Andrew
> Olech)
> 6. 04:01 PM - Re: Engine - cowling (Dan Checkoway)
> 7. 04:02 PM - Re: F-711 Bulkhead pre-punched hole alignment (Dan
> Checkoway)
> 8. 05:17 PM - Re: F-711 Bulkhead pre-punched hole alignment (William
> Gill)
> 9. 05:26 PM - Re: Engine - cowling (William Gill)
> 10. 06:10 PM - Re: Engine - cowling (wilkie)
> 11. 06:57 PM - Re: F-711 Bulkhead pre-punched hole alignment (Frank
> Stringham)
>
>
> ________________________________ Message 1
> _____________________________________
>
>
> Time: 12:34:24 AM PST US
> From: "Paul Walter" <pdwalter@bigpond.net.au>
> Subject: Re: RV7-List: Engine - cowling
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the man him self.
> I'm not sure that there would be to many wanting to trade down here in
> Australia,
> how ever if need be I may purchase a new cowl if it is to big a task to
> alter
> the one I have. Which engine would be you choice for my 7A ?.
>
>
> Paul Walter
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 2:11 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you didn't want to get
> into modifications. Seems like I see a cowling trade mentioned about once
> a month or so on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Saturday, October 15, 2005 7:15 PM
> Subject: RV7-List: Engine - cowling
>
>
> Hi guys,
>
> Glad to post my first question to the group, and is as follows.
>
> When ordering my kit I selected the engine mount and cowl for the 180
> hp io
> 360. My question is can I at this point choose to change to the 200 hp
> model
> and then alter the cowling to remove air intake snorkel later and glass
> repair.
> Or is the whole engine mount for the 200hp a different configuration.
>
>
> Thanks guys
>
> Paul Walter
> ________________________________ Message 2
> _____________________________________
>
>
> Time: 07:39:15 AM PST US
> From: Charlie England <ceengland@bellsouth.net>
> Subject: Re: RV7-List: Engine - cowling
>
> --> RV7-List message posted by: Charlie England <ceengland@bellsouth.net>
>
> The angle valve lyc has better bsfc than the other lyc engines. the
> Superior version might have improved porting using parallel valve heads
> & be nearly as good as the angle valve lyc, but I don't know whether
> that's true. You can get nearly 200 hp from a parallel valve lyc, but
> the bsfc isn't likely to be as good.
>
> No doubt, saving weight (& money) is good.
>
> Charlie
>
> Paul Walter wrote:
>
>> --> RV7-List message posted by: "Paul Walter" <pdwalter@bigpond.net.au>
>>
>> Thanks Charlie,
>>
>> A guy also told me once that his Superior version of the 180HP O360
>> actually dyno tested at 192 HP due to a different cam shaft that
>> company uses. He also stated that the 200HP engine was quite a bit
>> heavier and there for no advantage. His advice was Superior O or IO
>> 360, 18OHP for best performance.
>>
>> Regards - Paul Walter
>> ----- Original Message ----- From: "Charlie England"
>> <ceengland@bellsouth.net>
>> To: <rv7-list@matronics.com>
>> Sent: Sunday, October 16, 2005 12:53 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>>> --> RV7-List message posted by: Charlie England
>>> <ceengland@bellsouth.net>
>>>
>>> Paul Walter wrote:
>>>
>>>> Hi guys,
>>>> Glad to post my first question to the group, and is as follows.
>>>> When ordering my kit I selected the engine mount and cowl for the
>>>> 180 hp io 360. My question is can I at this point choose to change
>>>> to the 200 hp model and then alter the cowling to remove air intake
>>>> snorkel later and glass repair. Or is the whole engine mount for the
>>>> 200hp a different configuration.
>>>> Thanks guys
>>>> Paul Walter
>>>
>>>
>>> As long as the engines have the same 'type' (1 or 2) dynafocal mount,
>>> the mounting dimensions are the same from 320 through IO 360.
>>>
>>> Charlie
>>
>
>
> ________________________________ Message 3
> _____________________________________
>
>
> Time: 09:13:14 AM PST US
> From: "Dan Checkoway" <dan@rvproject.com>
> Subject: Re: RV7-List: Engine - cowling
>
> Paul,
>
> My personal choice for an engine is exactly what I have on my plane, the
> IO-360-A1B6.
> I'm studying the IO-390 as well, and I look forward to seeing whether
> it really lives up to the claims. I wonder whether the 390 will be
> capable of
> achieving the same degree of economy as the IO-360-A1B6.
>
> In any case, if you have the 180hp cowling, the angle valve engine most
> likely
> won't fit, so I'd recommend using a parallel valve 180hp variant. But to
> me it
> seems kinda silly to pick an engine based on which cowling you have,
> rather
> than vice versa.
>
> So it's hard for me to make a recommendation. Which powerplant do you
> WANT?
>
> )_( Dan
>
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 12:33 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the man him self.
> I'm not sure that there would be to many wanting to trade down here in
> Australia,
> how ever if need be I may purchase a new cowl if it is to big a task to
> alter
> the one I have. Which engine would be you choice for my 7A ?.
>
>
> Paul Walter
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 2:11 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you didn't want to get
> into modifications. Seems like I see a cowling trade mentioned about once
> a month or so on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Saturday, October 15, 2005 7:15 PM
> Subject: RV7-List: Engine - cowling
>
>
> Hi guys,
>
> Glad to post my first question to the group, and is as follows.
>
> When ordering my kit I selected the engine mount and cowl for the 180
> hp
> io 360. My question is can I at this point choose to change to the 200 hp
> model
> and then alter the cowling to remove air intake snorkel later and glass
> repair.
> Or is the whole engine mount for the 200hp a different configuration.
>
>
> Thanks guys
>
> Paul Walter
> ________________________________ Message 4
> _____________________________________
>
>
> Time: 02:19:36 PM PST US
> From: "Paul Walter" <pdwalter@bigpond.net.au>
> Subject: Re: RV7-List: Engine - cowling
>
> Dan,
> This is of course true, the cowling can be replaced being the least
> expensive
> item. Being new to he building process I've not heard of the 390 version.
> Where
> can I get some info ?.
>
>
> Regards - Paul
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Monday, October 17, 2005 2:12 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Paul,
>
> My personal choice for an engine is exactly what I have on my plane, the
> IO-360-A1B6.
> I'm studying the IO-390 as well, and I look forward to seeing whether
> it really lives up to the claims. I wonder whether the 390 will be
> capable
> of achieving the same degree of economy as the IO-360-A1B6.
>
> In any case, if you have the 180hp cowling, the angle valve engine most
> likely
> won't fit, so I'd recommend using a parallel valve 180hp variant. But to
> me
> it seems kinda silly to pick an engine based on which cowling you have,
> rather
> than vice versa.
>
> So it's hard for me to make a recommendation. Which powerplant do you
> WANT?
>
> )_( Dan
>
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 12:33 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the man him self.
> I'm not sure that there would be to many wanting to trade down here in
> Australia,
> how ever if need be I may purchase a new cowl if it is to big a task to
> alter the one I have. Which engine would be you choice for my 7A ?.
>
>
> Paul Walter
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 2:11 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you didn't want to
> get into modifications. Seems like I see a cowling trade mentioned about
> once a month or so on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Saturday, October 15, 2005 7:15 PM
> Subject: RV7-List: Engine - cowling
>
>
> Hi guys,
>
> Glad to post my first question to the group, and is as follows.
>
> When ordering my kit I selected the engine mount and cowl for the
> 180 hp
> io 360. My question is can I at this point choose to change to the 200 hp
> model
> and then alter the cowling to remove air intake snorkel later and glass
> repair.
> Or is the whole engine mount for the 200hp a different configuration.
>
>
> Thanks guys
>
> Paul Walter
> ________________________________ Message 5
> _____________________________________
>
>
> Time: 03:04:11 PM PST US
> From: "Andrew Olech" <olechap@comcast.net>
> Subject: RV7-List: F-711 Bulkhead pre-punched hole alignment
>
> Hi all,
>
>
> I've been working aft fuselage assembly on my RV-7. I am having some hole
> misalignment issues due to the pre-punched nature of the flanges on the
> F-711 bulkhead assembly relative to the skin pre-punched holes. In most
> cases they are off up to 7/8 or almost 1 hole diameter (3/32" dia hole).
> I've attached a set of pictures thrown into a .pdf (hope it goes through).
>
>
> 1st picture gives an overview of the tailcone region, highlighting the
> hole
> rows in question
>
> 2nd picture is a close-up of the hole misalignment with one side clecoed
> together and lined up perfectly
>
> 3rd picture shows a top looking down x-section view of the flanges and
> drawn-in relative hole centerlines.
>
>
> Thankfully, I haven't riveted together or primed this bulkhead yet - and
> no,
> it doesn't seem like riveting it together will help in any way - these
> thick
> heavy duty flanges (PITA, IMHO) are in intimate contact with each other
> and
> don't seem to want to come together any closer, I don't want to persuade
> the
> skins with a hole punch - I will just rip them. There are a total of 10
> holes per side that are effected.
>
>
> I think I have a few options, what do you suggest I do?
>
>
> 1. Bend the flanges straight and re-bend the radius tighter or make
> the
> bends such that the resulting flange will be shorter - thus the
> centerlines
> of the holes will come together closer.
> 2. Oversize both rows of holes to 1/8" (this might not even help -
> I'll still get figure 8's)
> 3. Drill a new line of holes in between the pre-punched ones (might
> look like hell under the HS)
>
>
> I guess sometimes pre-punched is just a tad bit too helpful.
>
>
> More ideas? Help!!
>
>
> -Andy
>
>
> ________________________________ Message 6
> _____________________________________
>
>
> Time: 04:01:27 PM PST US
> From: "Dan Checkoway" <dan@rvproject.com>
> Subject: Re: RV7-List: Engine - cowling
>
> http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/mostPowerfulFourCylinder.html
> http://www.avweb.com/news/columns/189629-1.html
>
> There are apparently 11 shops which are now approved by Lycoming to do 390
> build-ups. I would definitely talk to AeroSport Power
> (www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
> around to other build-up shops.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 2:18 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Dan,
> This is of course true, the cowling can be replaced being the least
> expensive
> item. Being new to he building process I've not heard of the 390 version.
> Where
> can I get some info ?.
>
>
> Regards - Paul
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Monday, October 17, 2005 2:12 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Paul,
>
> My personal choice for an engine is exactly what I have on my plane,
> the IO-360-A1B6.
> I'm studying the IO-390 as well, and I look forward to seeing whether
> it really lives up to the claims. I wonder whether the 390 will be
> capable
> of achieving the same degree of economy as the IO-360-A1B6.
>
> In any case, if you have the 180hp cowling, the angle valve engine most
> likely
> won't fit, so I'd recommend using a parallel valve 180hp variant. But to
> me it seems kinda silly to pick an engine based on which cowling you have,
> rather
> than vice versa.
>
> So it's hard for me to make a recommendation. Which powerplant do you
> WANT?
>
> )_( Dan
>
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 12:33 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the man him
> self.
> I'm not sure that there would be to many wanting to trade down here
> in Australia,
> how ever if need be I may purchase a new cowl if it is to big a task
> to alter the one I have. Which engine would be you choice for my 7A ?.
>
>
> Paul Walter
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 2:11 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you didn't want to
> get into modifications. Seems like I see a cowling trade mentioned about
> once a month or so on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Saturday, October 15, 2005 7:15 PM
> Subject: RV7-List: Engine - cowling
>
>
> Hi guys,
>
> Glad to post my first question to the group, and is as follows.
>
> When ordering my kit I selected the engine mount and cowl for the
> 180
> hp io 360. My question is can I at this point choose to change to the 200
> hp
> model and then alter the cowling to remove air intake snorkel later and
> glass
> repair. Or is the whole engine mount for the 200hp a different
> configuration.
>
>
> Thanks guys
>
> Paul Walter
> ________________________________ Message 7
> _____________________________________
>
>
> Time: 04:02:42 PM PST US
> From: "Dan Checkoway" <dan@rvproject.com>
> Subject: Re: RV7-List: F-711 Bulkhead pre-punched hole alignment
>
> You need to bend the bulkhead flanges to match the tapering contour of the
> fuselage.
> I can see in your photos that they appear to be mostly "straight" rather
> than tapered.
>
> By getting the bulkhead flanges to match the fuselage shape, that should
> make a
> big difference.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Andrew Olech
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 3:01 PM
> Subject: RV7-List: F-711 Bulkhead pre-punched hole alignment
>
>
> Hi all,
>
>
> I've been working aft fuselage assembly on my RV-7. I am having some
> hole misalignment
> issues due to the pre-punched nature of the flanges on the F-711 bulkhead
> assembly relative to the skin pre-punched holes. In most cases they are
> off up to 7/8 or almost 1 hole diameter (3/32" dia hole). I've attached a
> set
> of pictures thrown into a .pdf (hope it goes through).
>
>
> 1st picture gives an overview of the tailcone region, highlighting the
> hole
> rows in question
>
> 2nd picture is a close-up of the hole misalignment with one side clecoed
> together
> and lined up perfectly
>
> 3rd picture shows a top looking down x-section view of the flanges and
> drawn-in
> relative hole centerlines.
>
>
> Thankfully, I haven't riveted together or primed this bulkhead yet - and
> no,
> it doesn't seem like riveting it together will help in any way - these
> thick heavy
> duty flanges (PITA, IMHO) are in intimate contact with each other and
> don't
> seem to want to come together any closer, I don't want to persuade the
> skins
> with a hole punch - I will just rip them. There are a total of 10 holes
> per
> side that are effected.
>
>
> I think I have a few options, what do you suggest I do?
>
>
> 1.. Bend the flanges straight and re-bend the radius tighter or make
> the bends
> such that the resulting flange will be shorter - thus the centerlines of
> the
> holes will come together closer.
> 2.. Oversize both rows of holes to 1/8" (this might not even help -
> I'll still
> get figure 8's)
> 3.. Drill a new line of holes in between the pre-punched ones (might
> look like
> hell under the HS)
>
>
> I guess sometimes pre-punched is just a tad bit too helpful.
>
>
> More ideas? Help!!
>
>
> -Andy
>
>
> ________________________________ Message 8
> _____________________________________
>
>
> Time: 05:17:12 PM PST US
> From: "William Gill" <wgill10@comcast.net>
> Subject: RE: RV7-List: F-711 Bulkhead pre-punched hole alignment
>
> Hello Andy,
>
> This is a very common problem and one that Van's has recently addressed.
> The new aft bulkhead is no longer pre-punched.just order a replacement
> and match drill the aft bulkhead.
>
> Bill
>
>
> -----Original Message-----
> From: owner-rv7-list-server@matronics.com
> [mailto:owner-rv7-list-server@matronics.com] On Behalf Of Andrew Olech
> Subject: RV7-List: F-711 Bulkhead pre-punched hole alignment
>
> Hi all,
>
> I've been working aft fuselage assembly on my RV-7. I am having some
> hole misalignment issues due to the pre-punched nature of the flanges on
> the F-711 bulkhead assembly relative to the skin pre-punched holes. In
> most cases they are off up to 7/8 or almost 1 hole diameter (3/32" dia
> hole). I've attached a set of pictures thrown into a .pdf (hope it goes
> through).
>
> 1st picture gives an overview of the tailcone region, highlighting the
> hole rows in question
> 2nd picture is a close-up of the hole misalignment with one side clecoed
> together and lined up perfectly
> 3rd picture shows a top looking down x-section view of the flanges and
> drawn-in relative hole centerlines.
>
> Thankfully, I haven't riveted together or primed this bulkhead yet - and
> no, it doesn't seem like riveting it together will help in any way -
> these thick heavy duty flanges (PITA, IMHO) are in intimate contact with
> each other and don't seem to want to come together any closer, I don't
> want to persuade the skins with a hole punch - I will just rip them.
> There are a total of 10 holes per side that are effected.
>
> I think I have a few options, what do you suggest I do?
>
> 1. Bend the flanges straight and re-bend the radius tighter or
> make the bends such that the resulting flange will be shorter - thus the
> centerlines of the holes will come together closer.
> 2. Oversize both rows of holes to 1/8" (this might not even help
> - I'll still get figure 8's)
> 3. Drill a new line of holes in between the pre-punched ones
> (might look like hell under the HS)
>
> I guess sometimes pre-punched is just a tad bit too helpful.
>
> More ideas? Help!!
>
> -Andy
>
>
> ________________________________ Message 9
> _____________________________________
>
>
> Time: 05:26:24 PM PST US
> From: "William Gill" <wgill10@comcast.net>
> Subject: RE: RV7-List: Engine - cowling
>
> Here's another .. http://www.bpaengines.com/
>
> Allen Barrett
> BPE, Inc.
> www.barrettprecisionengines.com
> <http://www.barrettprecisionengines.com/>
> (918) 835-1089 phone
>
> I just toured their facility last week and got a first class tour that
> included looking at the IO-390X-A1E6 before assembly. All parts are
> Lycoming, including the roller cam assembly. Great people and excellent
> products.
>
> Bill
>
> -----Original Message-----
> From: owner-rv7-list-server@matronics.com
> [mailto:owner-rv7-list-server@matronics.com] On Behalf Of Dan Checkoway
> Subject: Re: RV7-List: Engine - cowling
>
> http://www.lycoming.textron.com/main.jsp?bodyPage=/pressReleases/july02/
> mostPowerfulFourCylinder.html
> http://www.avweb.com/news/columns/189629-1.html
>
> There are apparently 11 shops which are now approved by Lycoming to do
> 390 build-ups. I would definitely talk to AeroSport Power
> (www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
> around to other build-up shops.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul <mailto:pdwalter@bigpond.net.au> Walter
> Subject: Re: RV7-List: Engine - cowling
>
> Dan,
> This is of course true, the cowling can be replaced being the least
> expensive item. Being new to he building process I've not heard of the
> 390 version. Where can I get some info ?.
>
>
> Regards - Paul
> ----- Original Message -----
> From: Dan Checkoway <mailto:dan@rvproject.com>
> Subject: Re: RV7-List: Engine - cowling
>
> Paul,
>
> My personal choice for an engine is exactly what I have on my plane, the
> IO-360-A1B6. I'm studying the IO-390 as well, and I look forward to
> seeing whether it really lives up to the claims. I wonder whether the
> 390 will be capable of achieving the same degree of economy as the
> IO-360-A1B6.
>
> In any case, if you have the 180hp cowling, the angle valve engine most
> likely won't fit, so I'd recommend using a parallel valve 180hp variant.
> But to me it seems kinda silly to pick an engine based on which cowling
> you have, rather than vice versa.
>
> So it's hard for me to make a recommendation. Which powerplant do you
> WANT?
>
> )_( Dan
>
> ----- Original Message -----
> From: Paul <mailto:pdwalter@bigpond.net.au> Walter
> Subject: Re: RV7-List: Engine - cowling
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the man him self.
> I'm not sure that there would be to many wanting to trade down here in
> Australia, how ever if need be I may purchase a new cowl if it is to big
> a task to alter the one I have. Which engine would be you choice for my
> 7A ?.
>
>
> Paul Walter
> ----- Original Message -----
> From: Dan Checkoway <mailto:dan@rvproject.com>
> Subject: Re: RV7-List: Engine - cowling
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you didn't want to get
> into modifications. Seems like I see a cowling trade mentioned about
> once a month or so on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul <mailto:pdwalter@bigpond.net.au> Walter
> Subject: RV7-List: Engine - cowling
>
> Hi guys,
>
> Glad to post my first question to the group, and is as follows.
>
> When ordering my kit I selected the engine mount and cowl for the 180 hp
> io 360. My question is can I at this point choose to change to the 200
> hp model and then alter the cowling to remove air intake snorkel later
> and glass repair. Or is the whole engine mount for the 200hp a different
> configuration.
>
>
> Thanks guys
>
> Paul Walter
>
> ________________________________ Message 10
> ____________________________________
>
>
> Time: 06:10:57 PM PST US
> From: "wilkie" <wilkie1@charter.net>
> Subject: Re: RV7-List: Engine - cowling
>
> Another place to find info about the IO390 is at:
> http://www.bpaengines.com/site.html. The engine is listed under their
> "products" section and includes a brief summary about the engine.
>
> Barrett makes some killer performance engines used by some of the most
> well known
> acro pilots around. Their prices may be higher but I doubt anyone could
> question
> their quality.
>
> Hope it helps........
> Scott Wilkinson
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 4:18 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Dan,
> This is of course true, the cowling can be replaced being the least
> expensive
> item. Being new to he building process I've not heard of the 390 version.
> Where
> can I get some info ?.
>
>
> Regards - Paul
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Monday, October 17, 2005 2:12 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Paul,
>
> My personal choice for an engine is exactly what I have on my plane,
> the IO-360-A1B6.
> I'm studying the IO-390 as well, and I look forward to seeing whether
> it really lives up to the claims. I wonder whether the 390 will be
> capable
> of achieving the same degree of economy as the IO-360-A1B6.
>
> In any case, if you have the 180hp cowling, the angle valve engine most
> likely
> won't fit, so I'd recommend using a parallel valve 180hp variant. But to
> me it seems kinda silly to pick an engine based on which cowling you have,
> rather
> than vice versa.
>
> So it's hard for me to make a recommendation. Which powerplant do you
> WANT?
>
> )_( Dan
>
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 12:33 AM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the man him
> self.
> I'm not sure that there would be to many wanting to trade down here
> in Australia,
> how ever if need be I may purchase a new cowl if it is to big a task
> to alter the one I have. Which engine would be you choice for my 7A ?.
>
>
> Paul Walter
> ----- Original Message -----
> From: Dan Checkoway
> To: rv7-list@matronics.com
> Sent: Sunday, October 16, 2005 2:11 PM
> Subject: Re: RV7-List: Engine - cowling
>
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you didn't want to
> get into modifications. Seems like I see a cowling trade mentioned about
> once a month or so on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
> ----- Original Message -----
> From: Paul Walter
> To: rv7-list@matronics.com
> Sent: Saturday, October 15, 2005 7:15 PM
> Subject: RV7-List: Engine - cowling
>
>
> Hi guys,
>
> Glad to post my first question to the group, and is as follows.
>
> When ordering my kit I selected the engine mount and cowl for the
> 180
> hp io 360. My question is can I at this point choose to change to the 200
> hp
> model and then alter the cowling to remove air intake snorkel later and
> glass
> repair. Or is the whole engine mount for the 200hp a different
> configuration.
>
>
> Thanks guys
>
> Paul Walter
> ________________________________ Message 11
> ____________________________________
>
>
> Time: 06:57:59 PM PST US
> From: Frank Stringham <fstringham7a@yahoo.com>
> Subject: Re: RV7-List: F-711 Bulkhead pre-punched hole alignment
>
> Andy
>
> A few weeks back I had this same problem...PLUS.....The plus was there was
> a slight
> miss alignment of the flanges between the forward and aft potions of the
> bulkhead......But by the looks of your pictures it seems your fore / aft
> alignment
> is ok. Now for your problem: First try what Dan suggested. If that doesn't
> work go with the 426-4 rivets (1/8) I did and it came out fine.
>
> Frank at SGU and SLC Fuse under construction.....finish will be
> inventoried tomorrow!!!!!!!!!!!!!Any
> body got Oh lets say about 30k for my FWF stuff
>
> Andrew Olech <olechap@comcast.net> wrote:
>
> Hi all,
>
>
> Ive been working aft fuselage assembly on my RV-7. I am having some hole
> misalignment
> issues due to the pre-punched nature of the flanges on the F-711 bulkhead
> assembly relative to the skin pre-punched holes. In most cases they are
> off
> up to 7/8 or almost 1 hole diameter (3/32 dia hole). Ive attached a set
> of
> pictures thrown into a .pdf (hope it goes through).
>
>
> 1st picture gives an overview of the tailcone region, highlighting the
> hole rows
> in question
>
> 2nd picture is a close-up of the hole misalignment with one side clecoed
> together
> and lined up perfectly
>
> 3rd picture shows a top looking down x-section view of the flanges and
> drawn-in
> relative hole centerlines.
>
>
> Thankfully, I havent riveted together or primed this bulkhead yet and no,
> it doesnt
> seem like riveting it together will help in any way these thick heavy
> duty
> flanges (PITA, IMHO) are in intimate contact with each other and dont seem
> to want to come together any closer, I dont want to persuade the skins
> with a
> hole punch I will just rip them. There are a total of 10 holes per side
> that
> are effected.
>
>
> I think I have a few options, what do you suggest I do?
>
>
> Bend the flanges straight and re-bend the radius tighter or make the
> bends such
> that the resulting flange will be shorter thus the centerlines of the
> holes
> will come together closer.
> Oversize both rows of holes to 1/8 (this might not even help Ill still
> get
> figure 8s)
> Drill a new line of holes in between the pre-punched ones (might look
> like hell
> under the HS)
>
>
> I guess sometimes pre-punched is just a tad bit too helpful.
>
>
> More ideas? Help!!
>
>
> -Andy
>
>
> ---------------------------------
>
>
>
Message 2
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| Subject: | Re: Engine - cowling |
Gecko/20030208 Netscape/7.02
<003e01c5d207$abcefbc0$6400a8c0@inspinc.ad>
<002401c5d223$dadc82e0$0100000a@PDWALTER>
<004b01c5d26c$608420e0$0700a8c0@hole>
<001601c5d297$321bbb20$0100000a@PDWALTER>
<00b101c5d2a5$bceca7b0$6400a8c0@inspinc.ad>
As I am now evaluating engines for my RV7A build, I would appreciate
advice on this selection. The questions are more about weight than
horsepower. If I compare the IO360M1XX 180 HP to the IO360 - 200 HP and
the IO390 -210 HP in the terms of Weight, actual produced HP, fuel
consumption, hot starting tendencies, and overall performance in climb,
airspeed etc. I cannot see a reason to spend $5000-$10000 more for
anything beyond the 180 HP built to maximize perfomance. All three
engines will take the airplane past Vne, the bigger two use
significantly more fuel, and if have ever tried to hot start one of the
angle valve engines you understand. The 200 HP weighs 30 # more and the
390-210 weighs 40 # more than that. Both burn 10-13 GPH at cruise where
the 180 burns 8 or less. Even at $4.10 a gallon the cost savings alone
are significant. Am I missing something here?
Tyler, N537TM
Dan Checkoway wrote:
> http://www.lycoming.textron.com/main.jsp?bodyPage=/pressReleases/july02/mostPowerfulFourCylinder.html
> http://www.avweb.com/news/columns/189629-1.html
>
> There are apparently 11 shops which are now approved by Lycoming to do
> 390 build-ups. I would definitely talk to AeroSport Power
> (www.aerosportpower.com <http://www.aerosportpower.com>) and Mattituck
> (www.mattituck.com <http://www.mattituck.com>), and shop around to
> other build-up shops.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
>
> ----- Original Message -----
> From: Paul Walter <mailto:pdwalter@bigpond.net.au>
> To: rv7-list@matronics.com <mailto:rv7-list@matronics.com>
> Sent: Sunday, October 16, 2005 2:18 PM
> Subject: Re: RV7-List: Engine - cowling
>
> Dan,
> This is of course true, the cowling can be replaced being the
> least expensive item. Being new to he building process I've not
> heard of the 390 version. Where can I get some info ?.
>
>
> Regards - Paul
>
> ----- Original Message -----
> From: Dan Checkoway <mailto:dan@rvproject.com>
> To: rv7-list@matronics.com <mailto:rv7-list@matronics.com>
> Sent: Monday, October 17, 2005 2:12 AM
> Subject: Re: RV7-List: Engine - cowling
>
> Paul,
>
> My personal choice for an engine is exactly what I have on my
> plane, the IO-360-A1B6. I'm studying the IO-390 as well, and
> I look forward to seeing whether it really lives up to the
> claims. I wonder whether the 390 will be capable of achieving
> the same degree of economy as the IO-360-A1B6.
>
> In any case, if you have the 180hp cowling, the angle valve
> engine most likely won't fit, so I'd recommend using a
> parallel valve 180hp variant. But to me it seems kinda silly
> to pick an engine based on which cowling you have, rather than
> vice versa.
>
> So it's hard for me to make a recommendation. Which
> powerplant do you WANT?
>
> )_( Dan
>
>
> ----- Original Message -----
> From: Paul Walter <mailto:pdwalter@bigpond.net.au>
> To: rv7-list@matronics.com <mailto:rv7-list@matronics.com>
> Sent: Sunday, October 16, 2005 12:33 AM
> Subject: Re: RV7-List: Engine - cowling
>
> Thanks Dan,
> I have studied your site so it was nice to hear from the
> man him self.
> I'm not sure that there would be to many wanting to trade
> down here in Australia, how ever if need be I may purchase
> a new cowl if it is to big a task to alter the one I have.
> Which engine would be you choice for my 7A ?.
>
>
> Paul Walter
>
> ----- Original Message -----
> From: Dan Checkoway <mailto:dan@rvproject.com>
> To: rv7-list@matronics.com
> <mailto:rv7-list@matronics.com>
> Sent: Sunday, October 16, 2005 2:11 PM
> Subject: Re: RV7-List: Engine - cowling
>
> Charlie already covered the mount thing.
>
> I suspect you could sell or trade the cowling if you
> didn't want to get into modifications. Seems like I
> see a cowling trade mentioned about once a month or so
> on the lists & forums. Try posting to the forums at
> http://www.vansairforce.net.
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
>
> ----- Original Message -----
> From: Paul Walter <mailto:pdwalter@bigpond.net.au>
> To: rv7-list@matronics.com
> <mailto:rv7-list@matronics.com>
> Sent: Saturday, October 15, 2005 7:15 PM
> Subject: RV7-List: Engine - cowling
>
> Hi guys,
>
> Glad to post my first question to the group, and
> is as follows.
>
> When ordering my kit I selected the engine mount
> and cowl for the 180 hp io 360. My question is can
> I at this point choose to change to the 200 hp
> model and then alter the cowling to remove air
> intake snorkel later and glass repair. Or is the
> whole engine mount for the 200hp a different
> configuration.
>
>
> Thanks guys
>
> Paul Walter
>
Message 3
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|
| Subject: | Engine - cowling |
Dan -
Just to clear up a few points. I think you may have misread the Avweb
article. There are currently five (5) shops on Lycoming's approved list
of vendors for the IO-390 engine per the attached press release
http://www.lycomingpower.com/media/docs/kit_engine_press_release_072405.
doc. There are 11 kits available in the program. Contrary to the
article, we are able to modify the kits to boost compression, port/flow
match cylinders and other processes to improve performance of the
different kits.
A little history on the IO-390 - the first engine was built in our shop
for an aerobatic competitor and Lycoming decided to use it, along with
their 580, as a foray into the experimental engine market. It was sold
here exclusively until Lycoming announced its kit engine program at
Oshkosh this last summer. The engine is a drop in replacement for the
IO-360-A series engine and is rated at 210 hp at 2700 rpm with standard
compression and a 2000 hour TBO. We've had them produce as high as 215
on our dynomometer. At the current time, there are no modifications to
allow for extra hp, but it is a beauty and is a great power plant
option.
Rhonda Barrett-Bewley
Barrett Precision Engines, Inc.
2870- B. N. Sheridan Rd.
Tulsa, OK 74115
(918) 835-1089 phone
(918) 835-1754 fax
www.barrettprecisionengines.com
<http://www.barrettprecisionengines.com/>
________________________________
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Dan Checkoway
Subject: Re: RV7-List: Engine - cowling
http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/
mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by Lycoming to do
390 build-ups. I would definitely talk to AeroSport Power
(www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter <mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:18 PM
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be replaced being the
least expensive item. Being new to he building process I've not heard
of the 390 version. Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway <mailto:dan@rvproject.com>
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 AM
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is exactly what I have
on my plane, the IO-360-A1B6. I'm studying the IO-390 as well, and I
look forward to seeing whether it really lives up to the claims. I
wonder whether the 390 will be capable of achieving the same degree of
economy as the IO-360-A1B6.
In any case, if you have the 180hp cowling, the angle
valve engine most likely won't fit, so I'd recommend using a parallel
valve 180hp variant. But to me it seems kinda silly to pick an engine
based on which cowling you have, rather than vice versa.
So it's hard for me to make a recommendation. Which
powerplant do you WANT?
)_( Dan
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 12:33 AM
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice to hear
from the man him self.
I'm not sure that there would be to many wanting
to trade down here in Australia, how ever if need be I may purchase a
new cowl if it is to big a task to alter the one I have. Which engine
would be you choice for my 7A ?.
Paul Walter
----- Original Message -----
From: Dan Checkoway
<mailto:dan@rvproject.com>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:11 PM
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the
cowling if you didn't want to get into modifications. Seems like I see
a cowling trade mentioned about once a month or so on the lists &
forums. Try posting to the forums at http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Saturday, October 15, 2005 7:15 PM
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the
group, and is as follows.
When ordering my kit I selected the
engine mount and cowl for the 180 hp io 360. My question is can I at
this point choose to change to the 200 hp model and then alter the
cowling to remove air intake snorkel later and glass repair. Or is the
whole engine mount for the 200hp a different configuration.
Thanks guys
Paul Walter
Message 4
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|
| Subject: | Engine - cowling |
I think the idea that the bigger engines burn more fuel is not quite
right. Essentially an engine in say 120HP cruise will burn the same
amount of fuel set up at the same mixture point. You have to look at the
BFSC numbers which tell you how much fuel is burned for how much HP is
produced at various mixture and power settings. Think you'll find they
are all about the same.
Note Dan Checkoway gets avout 7.5 GPH on an angle Valved IO360 when
trimmed lean of peak.
Even the HArmon rocket guys get like 240knots at very low fuel
consumption when trimmed to LOP cruise and that is an IO540.
So I think the idea that a bigger engine equals more fuel is only true
for cars, airplanes have a choice..:)
As for me I went with and IO360 (180HP plus FF induction). The idea is
to run the motor on autofuel (I have a bit different pumping system) and
there is a $1 per gallon saving right there.
Frank
________________________________
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
Subject: Re: RV7-List: Engine - cowling
As I am now evaluating engines for my RV7A build, I would appreciate
advice on this selection. The questions are more about weight than
horsepower. If I compare the IO360M1XX 180 HP to the IO360 - 200 HP and
the IO390 -210 HP in the terms of Weight, actual produced HP, fuel
consumption, hot starting tendencies, and overall performance in climb,
airspeed etc. I cannot see a reason to spend $5000-$10000 more for
anything beyond the 180 HP built to maximize perfomance. All three
engines will take the airplane past Vne, the bigger two use
significantly more fuel, and if have ever tried to hot start one of the
angle valve engines you understand. The 200 HP weighs 30 # more and the
390-210 weighs 40 # more than that. Both burn 10-13 GPH at cruise where
the 180 burns 8 or less. Even at $4.10 a gallon the cost savings alone
are significant. Am I missing something here?
Tyler, N537TM
Dan Checkoway wrote:
=09
http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/
mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by Lycoming
to do 390 build-ups. I would definitely talk to AeroSport Power
(www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter <mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:18 PM
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be replaced
being the least expensive item. Being new to he building process I've
not heard of the 390 version. Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway <mailto:dan@rvproject.com>
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 AM
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is exactly what
I have on my plane, the IO-360-A1B6. I'm studying the IO-390 as well,
and I look forward to seeing whether it really lives up to the claims.
I wonder whether the 390 will be capable of achieving the same degree of
economy as the IO-360-A1B6.
In any case, if you have the 180hp cowling, the
angle valve engine most likely won't fit, so I'd recommend using a
parallel valve 180hp variant. But to me it seems kinda silly to pick an
engine based on which cowling you have, rather than vice versa.
So it's hard for me to make a recommendation.
Which powerplant do you WANT?
)_( Dan
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 12:33 AM
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice
to hear from the man him self.
I'm not sure that there would be to many
wanting to trade down here in Australia, how ever if need be I may
purchase a new cowl if it is to big a task to alter the one I have.
Which engine would be you choice for my 7A ?.
Paul Walter
----- Original Message -----
From: Dan Checkoway
<mailto:dan@rvproject.com>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:11 PM
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the
cowling if you didn't want to get into modifications. Seems like I see
a cowling trade mentioned about once a month or so on the lists &
forums. Try posting to the forums at http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Saturday, October 15, 2005 7:15 PM
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the
group, and is as follows.
When ordering my kit I selected the
engine mount and cowl for the 180 hp io 360. My question is can I at
this point choose to change to the 200 hp model and then alter the
cowling to remove air intake snorkel later and glass repair. Or is the
whole engine mount for the 200hp a different configuration.
Thanks guys
Paul Walter
Message 5
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| Subject: | Re: Engine - cowling |
Rocket...240 knots? Not. The HR-II drivers I know get around 180 KTAS burning
11-12gph.
I get 180 KTAS on ~10gph.
But I agree with the rest of your points. The angle valve engine is more efficient
at every turn. Worth the extra bucks? To me, absolutely. But obviously
not to most people, who are content running a less efficient powerplant which
has less cooling fin area. Which one is gonna make it to TBO and beyond...the
hopped-up 180hp parallel valve running around 400F on CHT for its life, or the
kicked-back 8.7:1 angle valve running at or below 300F on the CHTs?
Savings, schmavings.
What compression ratio are you gonna run on your IO-360 with auto fuel?
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Hinde, Frank George (Corvallis)
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 7:14 AM
Subject: RE: RV7-List: Engine - cowling
I think the idea that the bigger engines burn more fuel is not quite right. Essentially
an engine in say 120HP cruise will burn the same amount of fuel set
up at the same mixture point. You have to look at the BFSC numbers which tell
you how much fuel is burned for how much HP is produced at various mixture and
power settings. Think you'll find they are all about the same.
Note Dan Checkoway gets avout 7.5 GPH on an angle Valved IO360 when trimmed lean
of peak.
Even the HArmon rocket guys get like 240knots at very low fuel consumption when
trimmed to LOP cruise and that is an IO540.
So I think the idea that a bigger engine equals more fuel is only true for cars,
airplanes have a choice..:)
As for me I went with and IO360 (180HP plus FF induction). The idea is to run
the motor on autofuel (I have a bit different pumping system) and there is a
$1 per gallon saving right there.
Frank
From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
Sent: Monday, October 17, 2005 6:40 AM
To: rv7-list@matronics.com
Subject: Re: RV7-List: Engine - cowling
As I am now evaluating engines for my RV7A build, I would appreciate advice on
this selection. The questions are more about weight than horsepower. If I compare
the IO360M1XX 180 HP to the IO360 - 200 HP and the IO390 -210 HP in the
terms of Weight, actual produced HP, fuel consumption, hot starting tendencies,
and overall performance in climb, airspeed etc. I cannot see a reason to spend
$5000-$10000 more for anything beyond the 180 HP built to maximize perfomance.
All three engines will take the airplane past Vne, the bigger two use significantly
more fuel, and if have ever tried to hot start one of the angle valve
engines you understand. The 200 HP weighs 30 # more and the 390-210 weighs 40
# more than that. Both burn 10-13 GPH at cruise where the 180 burns 8 or less.
Even at $4.10 a gallon the cost savings alone are significant. Am I missing
something here?
Tyler, N537TM
Dan Checkoway wrote:
http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by Lycoming to do 390 build-ups. I would definitely talk to AeroSport Power (www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:18 PM
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be replaced being the least expensive
item. Being new to he building process I've not heard of the 390 version.
Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 AM
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is exactly what I have on my plane, the
IO-360-A1B6. I'm studying the IO-390 as well, and I look forward to seeing
whether it really lives up to the claims. I wonder whether the 390 will be capable
of achieving the same degree of economy as the IO-360-A1B6.
In any case, if you have the 180hp cowling, the angle valve engine most
likely won't fit, so I'd recommend using a parallel valve 180hp variant. But
to me it seems kinda silly to pick an engine based on which cowling you have,
rather than vice versa.
So it's hard for me to make a recommendation. Which powerplant do you
WANT?
)_( Dan
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 12:33 AM
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice to hear from the man him self.
I'm not sure that there would be to many wanting to trade down here in
Australia, how ever if need be I may purchase a new cowl if it is to big a task
to alter the one I have. Which engine would be you choice for my 7A ?.
Paul Walter
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:11 PM
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the cowling if you didn't want to get into modifications. Seems like I see a cowling trade mentioned about once a month or so on the lists & forums. Try posting to the forums at http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Saturday, October 15, 2005 7:15 PM
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the group, and is as follows.
When ordering my kit I selected the engine mount and cowl for the
180 hp io 360. My question is can I at this point choose to change to the 200
hp model and then alter the cowling to remove air intake snorkel later and glass
repair. Or is the whole engine mount for the 200hp a different configuration.
Thanks guys
Paul Walter
Message 6
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| Subject: | Engine - cowling |
Well I was going by memory and I am 44 today....be gentle..:)..I think
got my knots and MPH mixed up...Here is a quote frrom "Rocketboy"
The Team Rocket F1 is a highly modified derivative of a Van's Aircraft
RV-4. It features shorter wings, thick skins, WIDER cockpit and WAY more
cubic inches under the hood (540). This F1 typically cruises at 234 MPH
at 8500 feet burning 14 GPH. Economy cruise at 10,500 feet is 225.6 mph
burning 11.9 GPH. On a cool morning, the F1 will climb out at over 3500
feet per minute with the help of it's 290+ horsepower engine.
Still 225mph at 12GPH is still pretty good!
Your 180kts is presumably running ROP?...I think you said your LOP
(although slower) was quite a bit better than this?
My IO360 is the bog standard (8.5:1) CR. According to everything I read
it should be quite happy on premium car petrol. GAMI told me to keep
CHT's at 375F or less and run 100ROP or 25 to 50 LOP. That is their
conservative recommendation. According to Superior they had a hard time
even getting the IO360 to detonate running premium autogas.
I also have the Sam James cowl which of course has a plenum which is
supposed to cool better...Hoping this will control my CHT's better too.
If this works the $1 per gallon supposed savings will work out to
roughly the cost of a rebuild by TBO....If it makes it that far it will
indeed be a saving...If not it will be an expensive
experiment.......Then I'll be looking for an IO540 to hang on the
front!...:)
Regards
Frank
________________________________
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Dan Checkoway
Subject: Re: RV7-List: Engine - cowling
Rocket...240 knots? Not. The HR-II drivers I know get around 180 KTAS
burning 11-12gph.
I get 180 KTAS on ~10gph.
But I agree with the rest of your points. The angle valve engine is
more efficient at every turn. Worth the extra bucks? To me,
absolutely. But obviously not to most people, who are content running a
less efficient powerplant which has less cooling fin area. Which one is
gonna make it to TBO and beyond...the hopped-up 180hp parallel valve
running around 400F on CHT for its life, or the kicked-back 8.7:1 angle
valve running at or below 300F on the CHTs?
Savings, schmavings.
What compression ratio are you gonna run on your IO-360 with auto fuel?
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Hinde, Frank George (Corvallis)
<mailto:frank.hinde@hp.com>
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 7:14 AM
Subject: RE: RV7-List: Engine - cowling
I think the idea that the bigger engines burn more fuel is not
quite right. Essentially an engine in say 120HP cruise will burn the
same amount of fuel set up at the same mixture point. You have to look
at the BFSC numbers which tell you how much fuel is burned for how much
HP is produced at various mixture and power settings. Think you'll find
they are all about the same.
Note Dan Checkoway gets avout 7.5 GPH on an angle Valved IO360
when trimmed lean of peak.
Even the HArmon rocket guys get like 240knots at very low fuel
consumption when trimmed to LOP cruise and that is an IO540.
So I think the idea that a bigger engine equals more fuel is
only true for cars, airplanes have a choice..:)
As for me I went with and IO360 (180HP plus FF induction). The
idea is to run the motor on autofuel (I have a bit different pumping
system) and there is a $1 per gallon saving right there.
Frank
________________________________
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
Sent: Monday, October 17, 2005 6:40 AM
To: rv7-list@matronics.com
Subject: Re: RV7-List: Engine - cowling
=09
=09
As I am now evaluating engines for my RV7A build, I would
appreciate advice on this selection. The questions are more about weight
than horsepower. If I compare the IO360M1XX 180 HP to the IO360 - 200 HP
and the IO390 -210 HP in the terms of Weight, actual produced HP, fuel
consumption, hot starting tendencies, and overall performance in climb,
airspeed etc. I cannot see a reason to spend $5000-$10000 more for
anything beyond the 180 HP built to maximize perfomance. All three
engines will take the airplane past Vne, the bigger two use
significantly more fuel, and if have ever tried to hot start one of the
angle valve engines you understand. The 200 HP weighs 30 # more and the
390-210 weighs 40 # more than that. Both burn 10-13 GPH at cruise where
the 180 burns 8 or less. Even at $4.10 a gallon the cost savings alone
are significant. Am I missing something here?
Tyler, N537TM
=09
Dan Checkoway wrote:
=09
=09
http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/
mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by
Lycoming to do 390 build-ups. I would definitely talk to AeroSport
Power (www.aerosportpower.com) and Mattituck (www.mattituck.com), and
shop around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:18 PM
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be
replaced being the least expensive item. Being new to he building
process I've not heard of the 390 version. Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway
<mailto:dan@rvproject.com>
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 AM
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is
exactly what I have on my plane, the IO-360-A1B6. I'm studying the
IO-390 as well, and I look forward to seeing whether it really lives up
to the claims. I wonder whether the 390 will be capable of achieving
the same degree of economy as the IO-360-A1B6.
In any case, if you have the 180hp
cowling, the angle valve engine most likely won't fit, so I'd recommend
using a parallel valve 180hp variant. But to me it seems kinda silly to
pick an engine based on which cowling you have, rather than vice versa.
So it's hard for me to make a
recommendation. Which powerplant do you WANT?
)_( Dan
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 12:33 AM
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice
to hear from the man him self.
I'm not sure that there would be to many
wanting to trade down here in Australia, how ever if need be I may
purchase a new cowl if it is to big a task to alter the one I have.
Which engine would be you choice for my 7A ?.
Paul Walter
----- Original Message -----
From: Dan Checkoway
<mailto:dan@rvproject.com>
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:11 PM
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the
cowling if you didn't want to get into modifications. Seems like I see
a cowling trade mentioned about once a month or so on the lists &
forums. Try posting to the forums at http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
<mailto:pdwalter@bigpond.net.au>
To: rv7-list@matronics.com
Sent: Saturday, October 15, 2005 7:15 PM
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the
group, and is as follows.
When ordering my kit I selected the
engine mount and cowl for the 180 hp io 360. My question is can I at
this point choose to change to the 200 hp model and then alter the
cowling to remove air intake snorkel later and glass repair. Or is the
whole engine mount for the 200hp a different configuration.
Thanks guys
Paul Walter
Message 7
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|
| Subject: | Re: Engine - cowling |
Gecko/20030208 Netscape/7.02
<96ECC502D2678A4192F48386A524718D02CF0E43@cacexc07.americas.cpqcorp.net>
<006001c5d33c$034e78a0$0700a8c0@hole>
I don't intend to run mogas in my engine. And the 180 will be a std.
compression which will keep the CHT more in line. Also probably will not
run lean of peak either. Did that on a Cardinal with the 200 angle valve
and it did not last to 2000TBO. Fractured at 1250 hrs at the same spot
the crank case did before.
When I said tuned for best performance I meant flow matched , Horizontal
cold air, dual electronic ignitions, injectors done by AirFlow.
Dan, do you have to say a little prayer and do a little rain dance
before cranking hot on your 200. I sure had to on the Cardinal
Tyler N537TM
Dan Checkoway wrote:
> Rocket...240 knots? Not. The HR-II drivers I know get around 180
> KTAS burning 11-12gph.
>
> I get 180 KTAS on ~10gph.
>
> But I agree with the rest of your points. The angle valve engine is
> more efficient at every turn. Worth the extra bucks? To me,
> absolutely. But obviously not to most people, who are content running
> a less efficient powerplant which has less cooling fin area. Which
> one is gonna make it to TBO and beyond...the hopped-up 180hp parallel
> valve running around 400F on CHT for its life, or the kicked-back
> 8.7:1 angle valve running at or below 300F on the CHTs?
>
> Savings, schmavings.
>
> What compression ratio are you gonna run on your IO-360 with auto fuel?
>
> )_( Dan
> RV-7 N714D
> http://www.rvproject.com
>
> ----- Original Message -----
> From: Hinde, Frank George (Corvallis) <mailto:frank.hinde@hp.com>
> To: rv7-list@matronics.com <mailto:rv7-list@matronics.com>
> Sent: Monday, October 17, 2005 7:14 AM
> Subject: RE: RV7-List: Engine - cowling
>
> I think the idea that the bigger engines burn more fuel is not
> quite right. Essentially an engine in say 120HP cruise will burn
> the same amount of fuel set up at the same mixture point. You have
> to look at the BFSC numbers which tell you how much fuel is burned
> for how much HP is produced at various mixture and power settings.
> Think you'll find they are all about the same.
>
> Note Dan Checkoway gets avout 7.5 GPH on an angle Valved IO360
> when trimmed lean of peak.
>
> Even the HArmon rocket guys get like 240knots at very low fuel
> consumption when trimmed to LOP cruise and that is an IO540.
>
> So I think the idea that a bigger engine equals more fuel is only
> true for cars, airplanes have a choice..:)
>
> As for me I went with and IO360 (180HP plus FF induction). The
> idea is to run the motor on autofuel (I have a bit different
> pumping system) and there is a $1 per gallon saving right there.
>
> Frank
>
> From: owner-rv7-list-server@matronics.com
> [mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
> Sent: Monday, October 17, 2005 6:40 AM
> To: rv7-list@matronics.com
> Subject: Re: RV7-List: Engine - cowling
>
> As I am now evaluating engines for my RV7A build, I would
> appreciate advice on this selection. The questions are more about
> weight than horsepower. If I compare the IO360M1XX 180 HP to the
> IO360 - 200 HP and the IO390 -210 HP in the terms of Weight,
> actual produced HP, fuel consumption, hot starting tendencies, and
> overall performance in climb, airspeed etc. I cannot see a reason
> to spend $5000-$10000 more for anything beyond the 180 HP built to
> maximize perfomance. All three engines will take the airplane past
> Vne, the bigger two use significantly more fuel, and if have ever
> tried to hot start one of the angle valve engines you understand.
> The 200 HP weighs 30 # more and the 390-210 weighs 40 # more than
> that. Both burn 10-13 GPH at cruise where the 180 burns 8 or less.
> Even at $4.10 a gallon the cost savings alone are significant. Am
> I missing something here?
> Tyler, N537TM
>
> Dan Checkoway wrote:
>
>> http://www.lycoming.textron.com/main.jsp?bodyPage=/pressReleases/july02/mostPowerfulFourCylinder.html
>> http://www.avweb.com/news/columns/189629-1.html
>>
>> There are apparently 11 shops which are now approved by
>> Lycoming to do 390 build-ups. I would definitely talk to
>> AeroSport Power (www.aerosportpower.com
>> <http://www.aerosportpower.com>) and Mattituck (www.mattituck.com
>> <http://www.mattituck.com>), and shop around to other build-up shops.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>>
>> ----- Original Message -----
>> From: Paul Walter <mailto:pdwalter@bigpond.net.au>
>> To: rv7-list@matronics.com <mailto:rv7-list@matronics.com>
>> Sent: Sunday, October 16, 2005 2:18 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>> Dan,
>> This is of course true, the cowling can be replaced being the
>> least expensive item. Being new to he building process I've
>> not heard of the 390 version. Where can I get some info ?.
>>
>>
>> Regards - Paul
>>
>> ----- Original Message -----
>> From: Dan Checkoway <mailto:dan@rvproject.com>
>> To: rv7-list@matronics.com <mailto:rv7-list@matronics.com>
>> Sent: Monday, October 17, 2005 2:12 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>> Paul,
>>
>> My personal choice for an engine is exactly what I have
>> on my plane, the IO-360-A1B6. I'm studying the IO-390 as
>> well, and I look forward to seeing whether it really
>> lives up to the claims. I wonder whether the 390 will be
>> capable of achieving the same degree of economy as the
>> IO-360-A1B6.
>>
>> In any case, if you have the 180hp cowling, the angle
>> valve engine most likely won't fit, so I'd recommend
>> using a parallel valve 180hp variant. But to me it seems
>> kinda silly to pick an engine based on which cowling you
>> have, rather than vice versa.
>>
>> So it's hard for me to make a recommendation. Which
>> powerplant do you WANT?
>>
>> )_( Dan
>>
>>
>> ----- Original Message -----
>> From: Paul Walter <mailto:pdwalter@bigpond.net.au>
>> To: rv7-list@matronics.com
>> <mailto:rv7-list@matronics.com>
>> Sent: Sunday, October 16, 2005 12:33 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>> Thanks Dan,
>> I have studied your site so it was nice to hear from
>> the man him self.
>> I'm not sure that there would be to many wanting to
>> trade down here in Australia, how ever if need be I
>> may purchase a new cowl if it is to big a task to
>> alter the one I have. Which engine would be you
>> choice for my 7A ?.
>>
>>
>> Paul Walter
>>
>> ----- Original Message -----
>> From: Dan Checkoway <mailto:dan@rvproject.com>
>> To: rv7-list@matronics.com
>> <mailto:rv7-list@matronics.com>
>> Sent: Sunday, October 16, 2005 2:11 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>> Charlie already covered the mount thing.
>>
>> I suspect you could sell or trade the cowling if
>> you didn't want to get into modifications. Seems
>> like I see a cowling trade mentioned about once a
>> month or so on the lists & forums. Try posting
>> to the forums at http://www.vansairforce.net.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>>
>> ----- Original Message -----
>> From: Paul Walter
>> <mailto:pdwalter@bigpond.net.au>
>> To: rv7-list@matronics.com
>> <mailto:rv7-list@matronics.com>
>> Sent: Saturday, October 15, 2005 7:15 PM
>> Subject: RV7-List: Engine - cowling
>>
>> Hi guys,
>>
>> Glad to post my first question to the group,
>> and is as follows.
>>
>> When ordering my kit I selected the engine
>> mount and cowl for the 180 hp io 360. My
>> question is can I at this point choose to
>> change to the 200 hp model and then alter the
>> cowling to remove air intake snorkel later
>> and glass repair. Or is the whole engine
>> mount for the 200hp a different configuration.
>>
>>
>> Thanks guys
>>
>> Paul Walter
>>
>
Message 8
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Can anyone give me the ARM for the avionics stack in the 7?
Thanks,
Doug Preston
Message 9
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| Subject: | Re: Engine - cowling |
My 200hp angle valve injected engine is easy to hot start. No, it's not as easy
as a carb'd engine, that's for sure. It definitely takes more blades to kick.
But it's no problem, assuming you know the technique.
I use the Airflow Performance purge valve. I also have a single Lightspeed Plasma
II electronic ignition. These things can't hurt.
A 200hp injected engine versus a 180hp injected engine...they should behave identically
with respect to hot start traits.
Did you have balanced injectors on your Cardinal when you ran LOP? Were they balanced
so that EGTs peaked on all 4 cylinders within about 0.1gph of each other?
Was the prop dynamically balanced? Seems like you're confident that LOP
operation was the cause of the crank case fracture...curious about that.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: TylerB
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 1:39 PM
Subject: Re: RV7-List: Engine - cowling
I don't intend to run mogas in my engine. And the 180 will be a std. compression
which will keep the CHT more in line. Also probably will not run lean of peak
either. Did that on a Cardinal with the 200 angle valve and it did not last
to 2000TBO. Fractured at 1250 hrs at the same spot the crank case did before.
When I said tuned for best performance I meant flow matched , Horizontal cold
air, dual electronic ignitions, injectors done by AirFlow.
Dan, do you have to say a little prayer and do a little rain dance before cranking
hot on your 200. I sure had to on the Cardinal
Tyler N537TM
Dan Checkoway wrote:
Rocket...240 knots? Not. The HR-II drivers I know get around 180 KTAS burning
11-12gph.
I get 180 KTAS on ~10gph.
But I agree with the rest of your points. The angle valve engine is more efficient
at every turn. Worth the extra bucks? To me, absolutely. But obviously
not to most people, who are content running a less efficient powerplant which
has less cooling fin area. Which one is gonna make it to TBO and beyond...the
hopped-up 180hp parallel valve running around 400F on CHT for its life,
or the kicked-back 8.7:1 angle valve running at or below 300F on the CHTs?
Savings, schmavings.
What compression ratio are you gonna run on your IO-360 with auto fuel?
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Hinde, Frank George (Corvallis)
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 7:14 AM
Subject: RE: RV7-List: Engine - cowling
I think the idea that the bigger engines burn more fuel is not quite right.
Essentially an engine in say 120HP cruise will burn the same amount of fuel
set up at the same mixture point. You have to look at the BFSC numbers which
tell you how much fuel is burned for how much HP is produced at various mixture
and power settings. Think you'll find they are all about the same.
Note Dan Checkoway gets avout 7.5 GPH on an angle Valved IO360 when trimmed
lean of peak.
Even the HArmon rocket guys get like 240knots at very low fuel consumption
when trimmed to LOP cruise and that is an IO540.
So I think the idea that a bigger engine equals more fuel is only true for
cars, airplanes have a choice..:)
As for me I went with and IO360 (180HP plus FF induction). The idea is to
run the motor on autofuel (I have a bit different pumping system) and there is
a $1 per gallon saving right there.
Frank
From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
Sent: Monday, October 17, 2005 6:40 AM
To: rv7-list@matronics.com
Subject: Re: RV7-List: Engine - cowling
As I am now evaluating engines for my RV7A build, I would appreciate advice
on this selection. The questions are more about weight than horsepower. If
I compare the IO360M1XX 180 HP to the IO360 - 200 HP and the IO390 -210 HP in
the terms of Weight, actual produced HP, fuel consumption, hot starting tendencies,
and overall performance in climb, airspeed etc. I cannot see a reason to
spend $5000-$10000 more for anything beyond the 180 HP built to maximize perfomance.
All three engines will take the airplane past Vne, the bigger two use
significantly more fuel, and if have ever tried to hot start one of the angle
valve engines you understand. The 200 HP weighs 30 # more and the 390-210 weighs
40 # more than that. Both burn 10-13 GPH at cruise where the 180 burns 8 or
less. Even at $4.10 a gallon the cost savings alone are significant. Am I missing
something here?
Tyler, N537TM
Dan Checkoway wrote:
http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by Lycoming to do 390 build-ups. I would definitely talk to AeroSport Power (www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:18 PM
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be replaced being the least expensive
item. Being new to he building process I've not heard of the 390 version.
Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 AM
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is exactly what I have on my plane,
the IO-360-A1B6. I'm studying the IO-390 as well, and I look forward to seeing
whether it really lives up to the claims. I wonder whether the 390 will be
capable of achieving the same degree of economy as the IO-360-A1B6.
In any case, if you have the 180hp cowling, the angle valve engine
most likely won't fit, so I'd recommend using a parallel valve 180hp variant.
But to me it seems kinda silly to pick an engine based on which cowling you have,
rather than vice versa.
So it's hard for me to make a recommendation. Which powerplant do
you WANT?
)_( Dan
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 12:33 AM
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice to hear from the man him
self.
I'm not sure that there would be to many wanting to trade down here
in Australia, how ever if need be I may purchase a new cowl if it is to big
a task to alter the one I have. Which engine would be you choice for my 7A ?.
Paul Walter
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:11 PM
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the cowling if you didn't want to get into modifications. Seems like I see a cowling trade mentioned about once a month or so on the lists & forums. Try posting to the forums at http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Saturday, October 15, 2005 7:15 PM
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the group, and is as follows.
When ordering my kit I selected the engine mount and cowl for
the 180 hp io 360. My question is can I at this point choose to change to the
200 hp model and then alter the cowling to remove air intake snorkel later and
glass repair. Or is the whole engine mount for the 200hp a different configuration.
Thanks guys
Paul Walter
Message 10
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| Subject: | Re: Engine - cowling |
By the way, one of my next videos (I intend to do more video stuff one of these
days) is going to show how I hot start my engine. You might be surprised at
how easily it starts.
do not archive
)_( Dan
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 PM
Subject: Re: RV7-List: Engine - cowling
My 200hp angle valve injected engine is easy to hot start. No, it's not as easy
as a carb'd engine, that's for sure. It definitely takes more blades to kick.
But it's no problem, assuming you know the technique.
I use the Airflow Performance purge valve. I also have a single Lightspeed Plasma
II electronic ignition. These things can't hurt.
A 200hp injected engine versus a 180hp injected engine...they should behave identically
with respect to hot start traits.
Did you have balanced injectors on your Cardinal when you ran LOP? Were they
balanced so that EGTs peaked on all 4 cylinders within about 0.1gph of each other?
Was the prop dynamically balanced? Seems like you're confident that LOP
operation was the cause of the crank case fracture...curious about that.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: TylerB
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 1:39 PM
Subject: Re: RV7-List: Engine - cowling
I don't intend to run mogas in my engine. And the 180 will be a std. compression
which will keep the CHT more in line. Also probably will not run lean of
peak either. Did that on a Cardinal with the 200 angle valve and it did not last
to 2000TBO. Fractured at 1250 hrs at the same spot the crank case did before.
When I said tuned for best performance I meant flow matched , Horizontal cold
air, dual electronic ignitions, injectors done by AirFlow.
Dan, do you have to say a little prayer and do a little rain dance before cranking
hot on your 200. I sure had to on the Cardinal
Tyler N537TM
Dan Checkoway wrote:
Rocket...240 knots? Not. The HR-II drivers I know get around 180 KTAS burning
11-12gph.
I get 180 KTAS on ~10gph.
But I agree with the rest of your points. The angle valve engine is more
efficient at every turn. Worth the extra bucks? To me, absolutely. But obviously
not to most people, who are content running a less efficient powerplant
which has less cooling fin area. Which one is gonna make it to TBO and beyond...the
hopped-up 180hp parallel valve running around 400F on CHT for its life,
or the kicked-back 8.7:1 angle valve running at or below 300F on the CHTs?
Savings, schmavings.
What compression ratio are you gonna run on your IO-360 with auto fuel?
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Hinde, Frank George (Corvallis)
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 7:14 AM
Subject: RE: RV7-List: Engine - cowling
I think the idea that the bigger engines burn more fuel is not quite right.
Essentially an engine in say 120HP cruise will burn the same amount of fuel
set up at the same mixture point. You have to look at the BFSC numbers which
tell you how much fuel is burned for how much HP is produced at various mixture
and power settings. Think you'll find they are all about the same.
Note Dan Checkoway gets avout 7.5 GPH on an angle Valved IO360 when trimmed
lean of peak.
Even the HArmon rocket guys get like 240knots at very low fuel consumption
when trimmed to LOP cruise and that is an IO540.
So I think the idea that a bigger engine equals more fuel is only true
for cars, airplanes have a choice..:)
As for me I went with and IO360 (180HP plus FF induction). The idea is
to run the motor on autofuel (I have a bit different pumping system) and there
is a $1 per gallon saving right there.
Frank
From: owner-rv7-list-server@matronics.com [mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
Sent: Monday, October 17, 2005 6:40 AM
To: rv7-list@matronics.com
Subject: Re: RV7-List: Engine - cowling
As I am now evaluating engines for my RV7A build, I would appreciate advice
on this selection. The questions are more about weight than horsepower. If
I compare the IO360M1XX 180 HP to the IO360 - 200 HP and the IO390 -210 HP in
the terms of Weight, actual produced HP, fuel consumption, hot starting tendencies,
and overall performance in climb, airspeed etc. I cannot see a reason
to spend $5000-$10000 more for anything beyond the 180 HP built to maximize perfomance.
All three engines will take the airplane past Vne, the bigger two use
significantly more fuel, and if have ever tried to hot start one of the angle
valve engines you understand. The 200 HP weighs 30 # more and the 390-210 weighs
40 # more than that. Both burn 10-13 GPH at cruise where the 180 burns 8
or less. Even at $4.10 a gallon the cost savings alone are significant. Am I missing
something here?
Tyler, N537TM
Dan Checkoway wrote:
http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by Lycoming to do 390 build-ups. I would definitely talk to AeroSport Power (www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:18 PM
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be replaced being the least
expensive item. Being new to he building process I've not heard of the 390
version. Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Monday, October 17, 2005 2:12 AM
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is exactly what I have on my plane,
the IO-360-A1B6. I'm studying the IO-390 as well, and I look forward to seeing
whether it really lives up to the claims. I wonder whether the 390 will
be capable of achieving the same degree of economy as the IO-360-A1B6.
In any case, if you have the 180hp cowling, the angle valve engine
most likely won't fit, so I'd recommend using a parallel valve 180hp variant.
But to me it seems kinda silly to pick an engine based on which cowling you
have, rather than vice versa.
So it's hard for me to make a recommendation. Which powerplant do
you WANT?
)_( Dan
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 12:33 AM
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice to hear from the man him
self.
I'm not sure that there would be to many wanting to trade down
here in Australia, how ever if need be I may purchase a new cowl if it is to big
a task to alter the one I have. Which engine would be you choice for my 7A
?.
Paul Walter
----- Original Message -----
From: Dan Checkoway
To: rv7-list@matronics.com
Sent: Sunday, October 16, 2005 2:11 PM
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the cowling if you didn't want to get into modifications. Seems like I see a cowling trade mentioned about once a month or so on the lists & forums. Try posting to the forums at http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter
To: rv7-list@matronics.com
Sent: Saturday, October 15, 2005 7:15 PM
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the group, and is as follows.
When ordering my kit I selected the engine mount and cowl for
the 180 hp io 360. My question is can I at this point choose to change to the
200 hp model and then alter the cowling to remove air intake snorkel later
and glass repair. Or is the whole engine mount for the 200hp a different configuration.
Thanks guys
Paul Walter
Message 11
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| Subject: | Re: F-711 Bulkhead pre-punched hole alignment |
[Frank at SGU and SLC]
Frank, you must be SkyWest!
Brooks
N513BW -- Finish kit
Do not archive
Message 12
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--> RV7-List message posted by: Norman Younie <rv6capt@pacificcoast.net>
The arm depends entirely on the length of the radio you are using.( eg.
if the radio is 10 inches long then the cg is 5 inches forward of the
instrument panel )
Norman
DOUGPFLYRV@aol.com wrote:
> Can anyone give me the ARM for the avionics stack in the 7?
> Thanks,
> Doug Preston
Message 13
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| Subject: | Engine - cowling |
The IO-360 200hp angle valve weighs 300 pounds; the IO-390 210hp weighs
308 pounds.
Bill
-----Original Message-----
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of TylerB
Subject: Re: RV7-List: Engine - cowling
As I am now evaluating engines for my RV7A build, I would appreciate
advice on this selection. The questions are more about weight than
horsepower. If I compare the IO360M1XX 180 HP to the IO360 - 200 HP and
the IO390 -210 HP in the terms of Weight, actual produced HP, fuel
consumption, hot starting tendencies, and overall performance in climb,
airspeed etc. I cannot see a reason to spend $5000-$10000 more for
anything beyond the 180 HP built to maximize perfomance. All three
engines will take the airplane past Vne, the bigger two use
significantly more fuel, and if have ever tried to hot start one of the
angle valve engines you understand. The 200 HP weighs 30 # more and the
390-210 weighs 40 # more than that. Both burn 10-13 GPH at cruise where
the 180 burns 8 or less. Even at $4.10 a gallon the cost savings alone
are significant. Am I missing something here?
Tyler, N537TM
Dan Checkoway wrote:
http://www.lycoming.textron.com/main.jsp?bodyPage=/pressReleases/july02/
mostPowerfulFourCylinder.html
http://www.avweb.com/news/columns/189629-1.html
There are apparently 11 shops which are now approved by Lycoming to do
390 build-ups. I would definitely talk to AeroSport Power
(www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
around to other build-up shops.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul Walter <mailto:pdwalter@bigpond.net.au>
Subject: Re: RV7-List: Engine - cowling
Dan,
This is of course true, the cowling can be replaced being the least
expensive item. Being new to he building process I've not heard of the
390 version. Where can I get some info ?.
Regards - Paul
----- Original Message -----
From: Dan Checkoway <mailto:dan@rvproject.com>
Subject: Re: RV7-List: Engine - cowling
Paul,
My personal choice for an engine is exactly what I have on my plane, the
IO-360-A1B6. I'm studying the IO-390 as well, and I look forward to
seeing whether it really lives up to the claims. I wonder whether the
390 will be capable of achieving the same degree of economy as the
IO-360-A1B6.
In any case, if you have the 180hp cowling, the angle valve engine most
likely won't fit, so I'd recommend using a parallel valve 180hp variant.
But to me it seems kinda silly to pick an engine based on which cowling
you have, rather than vice versa.
So it's hard for me to make a recommendation. Which powerplant do you
WANT?
)_( Dan
----- Original Message -----
From: Paul <mailto:pdwalter@bigpond.net.au> Walter
Subject: Re: RV7-List: Engine - cowling
Thanks Dan,
I have studied your site so it was nice to hear from the man him self.
I'm not sure that there would be to many wanting to trade down here in
Australia, how ever if need be I may purchase a new cowl if it is to big
a task to alter the one I have. Which engine would be you choice for my
7A ?.
Paul Walter
----- Original Message -----
From: Dan Checkoway <mailto:dan@rvproject.com>
Subject: Re: RV7-List: Engine - cowling
Charlie already covered the mount thing.
I suspect you could sell or trade the cowling if you didn't want to get
into modifications. Seems like I see a cowling trade mentioned about
once a month or so on the lists & forums. Try posting to the forums at
http://www.vansairforce.net.
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: Paul <mailto:pdwalter@bigpond.net.au> Walter
Subject: RV7-List: Engine - cowling
Hi guys,
Glad to post my first question to the group, and is as follows.
When ordering my kit I selected the engine mount and cowl for the 180 hp
io 360. My question is can I at this point choose to change to the 200
hp model and then alter the cowling to remove air intake snorkel later
and glass repair. Or is the whole engine mount for the 200hp a different
configuration.
Thanks guys
Paul Walter
Message 14
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| Subject: | F-711 Bulkhead pre-punched hole alignment |
Frank, Bill and Dan;
Thanks for the quick responses. I guess my photos weren't perfect and are
slightly misleading. The long (4-hole) flanges were pretty close to
matching the skin angle. What you saw were the two single-hole tabs at the
top where the longeron fits in, so they are offset 0.125 and not perfectly
bent yet; but anyway I went back and double-checked (I'm getting good at
taking that tailcone apart!) and realized that while bending flanges to mate
with the side skins, I had made the web-to-flange radii slightly larger.
So...
I actually took two short pieces of angle, rounded the edges to the desired
radius and basically used them as a "forming die". I clamped the bulkhead
to one of the angles in a vise, and held and hit the other angle with a
flush set in my rivet gun to (in lieu of a better term) smash the parts
together and form the radiuses tighter. It helped significantly - the
resulting holes are now within 1/4 Dia and I left little re-op evidence.
I'm fairly picky, but I think oversizing to 1/8 will be acceptable at this
point.
Oh, and I'm with Dan on the angled valve -- I design jet engines and it's
always nice to see lifing analysis results with parts that have extra
cooling =)
Thanks again!
-Andy
_____
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Frank Stringham
Subject: Re: RV7-List: F-711 Bulkhead pre-punched hole alignment
Andy
A few weeks back I had this same problem...PLUS.....The plus was there was a
slight miss alignment of the flanges between the forward and aft potions of
the bulkhead......But by the looks of your pictures it seems your fore / aft
alignment is ok. Now for your problem: First try what Dan suggested. If that
doesn't work go with the 426-4 rivets (1/8) I did and it came out fine.
Frank at SGU and SLC Fuse under construction.....finish will be inventoried
tomorrow!!!!!!!!!!!!!Any body got Oh lets say about 30k for my FWF stuff
Andrew Olech <olechap@comcast.net> wrote:
Hi all,
I've been working aft fuselage assembly on my RV-7. I am having some hole
misalignment issues due to the pre-punched nature of the flanges on the
F-711 bulkhead assembly relative to the skin pre-punched holes. In most
cases they are off up to 7/8 or almost 1 hole diameter (3/32" dia hole).
I've attached a set of pictures thrown into a .pdf (hope it goes through).
1st picture gives an overview of the tailcone region, highlighting the hole
rows in question
2nd picture is a close-up of the hole misalignment with one side clecoed
together and lined up perfectly
3rd picture shows a top looking down x-section view of the flanges and
drawn-in relative hole centerlines.
Thankfully, I haven't riveted together or primed this bulkhead yet - and no,
it doesn't seem like riveting it together will help in any way - these thick
heavy duty flanges (PITA, IMHO) are in intimate contact with each other and
don't seem to want to come together any closer, I don't want to persuade the
skins with a hole punch - I will just rip them. There are a total of 10
holes per side that are effected.
I think I have a few options, what do you suggest I do?
1. Bend the flanges straight and re-bend the radius tighter or make the
bends such that the resulting flange will be shorter - thus the centerlines
of the holes will come together closer.
2. Oversize both rows of holes to 1/8" (this might not even help -
I'll still get figure 8's)
3. Drill a new line of holes in between the pre-punched ones (might
look like hell under the HS)
I guess sometimes pre-punched is just a tad bit too helpful.
More ideas? Help!!
-Andy
_____
<http://pa.yahoo.com/*http:/us.rd.yahoo.com/evt=36035/*http:/music.yahoo.com
/unlimited/> Music Unlimited - Access over 1 million songs. Try it free.
Message 15
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| Subject: | Re: Engine - cowling |
<snip>
Did that on a Cardinal with the 200 angle valve and it did not last to 2000TBO.
Fractured at 1250 hrs at the same spot the crank case did before.
<snip>
IMHO your crankcase did not fracture due to running LOP. Someone should of looked
a little deeper.
Darrell
do not archive
---------------------------------
Message 16
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| Subject: | Re: RV7-List Digest: 11 Msgs - 10/16/05 |
--> RV7-List message posted by: "Frank Stringham" <fstringham@hotmail.com>
Paul
Dan Checkoway's pix narrative is a great resource. Check his site at
www.rvproject.com.
Frank @ sgu and slc
>From: "Paul Walter" <pdwalter@bigpond.net.au>
>Reply-To: rv7-list@matronics.com
>To: <rv7-list@matronics.com>
>Subject: RV7-List: Re: RV7-List Digest: 11 Msgs - 10/16/05
>Date: Mon, 17 Oct 2005 17:31:34 +1000
>
>--> RV7-List message posted by: "Paul Walter" <pdwalter@bigpond.net.au>
>
>Hi guys,
>As a first time builder,
>I was wondering if any one actually produces a DVD series that actually
>takes you through the building process step by step showing builders how to
>construct tye RV 7.
>
>thank you
>
>Paul Walter
>----- Original Message ----- From: "RV7-List Digest Server"
><rv7-list-digest@matronics.com>
>To: "RV7-List Digest List" <rv7-list-digest@matronics.com>
>Sent: Monday, October 17, 2005 4:57 PM
>Subject: RV7-List Digest: 11 Msgs - 10/16/05
>
>
>>*
>>
>>==================================================
>> Online Versions of Today's List Digest Archive
>>==================================================
>>
>>Today's complete RV7-List Digest can also be found in either of the
>>two Web Links listed below. The .html file includes the Digest formatted
>>in HTML for viewing with a web browser and features Hyperlinked Indexes
>>and Message Navigation. The .txt file includes the plain ASCII version
>>of the RV7-List Digest and can be viewed with a generic text editor
>>such as Notepad or with a web browser.
>>
>>HTML Version:
>>
>>
>>http://www.matronics.com/digest/rv7-list/Digest.RV7-List.2005-10-16.html
>>
>>Text Version:
>>
>>
>>http://www.matronics.com/digest/rv7-list/Digest.RV7-List.2005-10-16.txt
>>
>>
>>================================================
>> EMail Version of Today's List Digest Archive
>>================================================
>>
>>
>> RV7-List Digest Archive
>> ---
>> Total Messages Posted Sun 10/16/05: 11
>>
>>
>>Today's Message Index:
>>----------------------
>>
>> 1. 12:34 AM - Re: Engine - cowling (Paul Walter)
>> 2. 07:39 AM - Re: Engine - cowling (Charlie England)
>> 3. 09:13 AM - Re: Engine - cowling (Dan Checkoway)
>> 4. 02:19 PM - Re: Engine - cowling (Paul Walter)
>> 5. 03:04 PM - F-711 Bulkhead pre-punched hole alignment (Andrew
>>Olech)
>> 6. 04:01 PM - Re: Engine - cowling (Dan Checkoway)
>> 7. 04:02 PM - Re: F-711 Bulkhead pre-punched hole alignment (Dan
>>Checkoway)
>> 8. 05:17 PM - Re: F-711 Bulkhead pre-punched hole alignment (William
>>Gill)
>> 9. 05:26 PM - Re: Engine - cowling (William Gill)
>> 10. 06:10 PM - Re: Engine - cowling (wilkie)
>> 11. 06:57 PM - Re: F-711 Bulkhead pre-punched hole alignment (Frank
>>Stringham)
>>
>>
>>
>>________________________________ Message 1
>>_____________________________________
>>
>>
>>Time: 12:34:24 AM PST US
>>From: "Paul Walter" <pdwalter@bigpond.net.au>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Thanks Dan,
>>I have studied your site so it was nice to hear from the man him self.
>>I'm not sure that there would be to many wanting to trade down here in
>>Australia,
>>how ever if need be I may purchase a new cowl if it is to big a task to
>>alter
>>the one I have. Which engine would be you choice for my 7A ?.
>>
>>
>>Paul Walter
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 2:11 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Charlie already covered the mount thing.
>>
>> I suspect you could sell or trade the cowling if you didn't want to get
>>into modifications. Seems like I see a cowling trade mentioned about once
>>a month or so on the lists & forums. Try posting to the forums at
>>http://www.vansairforce.net.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Saturday, October 15, 2005 7:15 PM
>> Subject: RV7-List: Engine - cowling
>>
>>
>> Hi guys,
>>
>> Glad to post my first question to the group, and is as follows.
>>
>> When ordering my kit I selected the engine mount and cowl for the 180
>>hp io
>>360. My question is can I at this point choose to change to the 200 hp
>>model
>>and then alter the cowling to remove air intake snorkel later and glass
>>repair.
>>Or is the whole engine mount for the 200hp a different configuration.
>>
>>
>> Thanks guys
>>
>> Paul Walter
>>________________________________ Message 2
>>_____________________________________
>>
>>
>>Time: 07:39:15 AM PST US
>>From: Charlie England <ceengland@bellsouth.net>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>--> RV7-List message posted by: Charlie England <ceengland@bellsouth.net>
>>
>>The angle valve lyc has better bsfc than the other lyc engines. the
>>Superior version might have improved porting using parallel valve heads
>>& be nearly as good as the angle valve lyc, but I don't know whether
>>that's true. You can get nearly 200 hp from a parallel valve lyc, but
>>the bsfc isn't likely to be as good.
>>
>>No doubt, saving weight (& money) is good.
>>
>>Charlie
>>
>>Paul Walter wrote:
>>
>>>--> RV7-List message posted by: "Paul Walter" <pdwalter@bigpond.net.au>
>>>
>>>Thanks Charlie,
>>>
>>>A guy also told me once that his Superior version of the 180HP O360
>>>actually dyno tested at 192 HP due to a different cam shaft that
>>>company uses. He also stated that the 200HP engine was quite a bit
>>>heavier and there for no advantage. His advice was Superior O or IO
>>>360, 18OHP for best performance.
>>>
>>>Regards - Paul Walter
>>>----- Original Message ----- From: "Charlie England"
>>><ceengland@bellsouth.net>
>>>To: <rv7-list@matronics.com>
>>>Sent: Sunday, October 16, 2005 12:53 PM
>>>Subject: Re: RV7-List: Engine - cowling
>>>
>>>
>>>>--> RV7-List message posted by: Charlie England
>>>><ceengland@bellsouth.net>
>>>>
>>>>Paul Walter wrote:
>>>>
>>>>>Hi guys,
>>>>> Glad to post my first question to the group, and is as follows.
>>>>> When ordering my kit I selected the engine mount and cowl for the
>>>>>180 hp io 360. My question is can I at this point choose to change
>>>>>to the 200 hp model and then alter the cowling to remove air intake
>>>>>snorkel later and glass repair. Or is the whole engine mount for the
>>>>>200hp a different configuration.
>>>>> Thanks guys
>>>>> Paul Walter
>>>>
>>>>
>>>>As long as the engines have the same 'type' (1 or 2) dynafocal mount,
>>>>the mounting dimensions are the same from 320 through IO 360.
>>>>
>>>>Charlie
>>>
>>
>>
>>________________________________ Message 3
>>_____________________________________
>>
>>
>>Time: 09:13:14 AM PST US
>>From: "Dan Checkoway" <dan@rvproject.com>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Paul,
>>
>>My personal choice for an engine is exactly what I have on my plane, the
>>IO-360-A1B6.
>>I'm studying the IO-390 as well, and I look forward to seeing whether
>>it really lives up to the claims. I wonder whether the 390 will be
>>capable of
>>achieving the same degree of economy as the IO-360-A1B6.
>>
>>In any case, if you have the 180hp cowling, the angle valve engine most
>>likely
>>won't fit, so I'd recommend using a parallel valve 180hp variant. But to
>>me it
>>seems kinda silly to pick an engine based on which cowling you have,
>>rather
>>than vice versa.
>>
>>So it's hard for me to make a recommendation. Which powerplant do you
>>WANT?
>>
>>)_( Dan
>>
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 12:33 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Thanks Dan,
>> I have studied your site so it was nice to hear from the man him self.
>> I'm not sure that there would be to many wanting to trade down here in
>>Australia,
>>how ever if need be I may purchase a new cowl if it is to big a task to
>>alter
>>the one I have. Which engine would be you choice for my 7A ?.
>>
>>
>> Paul Walter
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 2:11 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Charlie already covered the mount thing.
>>
>> I suspect you could sell or trade the cowling if you didn't want to
>>get into modifications. Seems like I see a cowling trade mentioned about
>>once a month or so on the lists & forums. Try posting to the forums at
>>http://www.vansairforce.net.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Saturday, October 15, 2005 7:15 PM
>> Subject: RV7-List: Engine - cowling
>>
>>
>> Hi guys,
>>
>> Glad to post my first question to the group, and is as follows.
>>
>> When ordering my kit I selected the engine mount and cowl for the
>>180 hp
>>io 360. My question is can I at this point choose to change to the 200 hp
>>model
>>and then alter the cowling to remove air intake snorkel later and glass
>>repair.
>>Or is the whole engine mount for the 200hp a different configuration.
>>
>>
>> Thanks guys
>>
>> Paul Walter
>>________________________________ Message 4
>>_____________________________________
>>
>>
>>Time: 02:19:36 PM PST US
>>From: "Paul Walter" <pdwalter@bigpond.net.au>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Dan,
>>This is of course true, the cowling can be replaced being the least
>>expensive
>>item. Being new to he building process I've not heard of the 390 version.
>>Where
>>can I get some info ?.
>>
>>
>>Regards - Paul
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Monday, October 17, 2005 2:12 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Paul,
>>
>> My personal choice for an engine is exactly what I have on my plane, the
>>IO-360-A1B6.
>>I'm studying the IO-390 as well, and I look forward to seeing whether
>>it really lives up to the claims. I wonder whether the 390 will be
>>capable
>>of achieving the same degree of economy as the IO-360-A1B6.
>>
>> In any case, if you have the 180hp cowling, the angle valve engine most
>>likely
>>won't fit, so I'd recommend using a parallel valve 180hp variant. But to
>>me
>>it seems kinda silly to pick an engine based on which cowling you have,
>>rather
>>than vice versa.
>>
>> So it's hard for me to make a recommendation. Which powerplant do you
>>WANT?
>>
>> )_( Dan
>>
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 12:33 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Thanks Dan,
>> I have studied your site so it was nice to hear from the man him self.
>> I'm not sure that there would be to many wanting to trade down here in
>>Australia,
>>how ever if need be I may purchase a new cowl if it is to big a task to
>>alter the one I have. Which engine would be you choice for my 7A ?.
>>
>>
>> Paul Walter
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 2:11 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Charlie already covered the mount thing.
>>
>> I suspect you could sell or trade the cowling if you didn't want to
>>get into modifications. Seems like I see a cowling trade mentioned about
>>once a month or so on the lists & forums. Try posting to the forums at
>>http://www.vansairforce.net.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Saturday, October 15, 2005 7:15 PM
>> Subject: RV7-List: Engine - cowling
>>
>>
>> Hi guys,
>>
>> Glad to post my first question to the group, and is as follows.
>>
>> When ordering my kit I selected the engine mount and cowl for the
>>180 hp
>>io 360. My question is can I at this point choose to change to the 200 hp
>>model
>>and then alter the cowling to remove air intake snorkel later and glass
>>repair.
>>Or is the whole engine mount for the 200hp a different configuration.
>>
>>
>> Thanks guys
>>
>> Paul Walter
>>________________________________ Message 5
>>_____________________________________
>>
>>
>>Time: 03:04:11 PM PST US
>>From: "Andrew Olech" <olechap@comcast.net>
>>Subject: RV7-List: F-711 Bulkhead pre-punched hole alignment
>>
>>Hi all,
>>
>>
>>I've been working aft fuselage assembly on my RV-7. I am having some hole
>>misalignment issues due to the pre-punched nature of the flanges on the
>>F-711 bulkhead assembly relative to the skin pre-punched holes. In most
>>cases they are off up to 7/8 or almost 1 hole diameter (3/32" dia hole).
>>I've attached a set of pictures thrown into a .pdf (hope it goes through).
>>
>>
>>1st picture gives an overview of the tailcone region, highlighting the
>>hole
>>rows in question
>>
>>2nd picture is a close-up of the hole misalignment with one side clecoed
>>together and lined up perfectly
>>
>>3rd picture shows a top looking down x-section view of the flanges and
>>drawn-in relative hole centerlines.
>>
>>
>>Thankfully, I haven't riveted together or primed this bulkhead yet - and
>>no,
>>it doesn't seem like riveting it together will help in any way - these
>>thick
>>heavy duty flanges (PITA, IMHO) are in intimate contact with each other
>>and
>>don't seem to want to come together any closer, I don't want to persuade
>>the
>>skins with a hole punch - I will just rip them. There are a total of 10
>>holes per side that are effected.
>>
>>
>>I think I have a few options, what do you suggest I do?
>>
>>
>>1. Bend the flanges straight and re-bend the radius tighter or make
>>the
>>bends such that the resulting flange will be shorter - thus the
>>centerlines
>>of the holes will come together closer.
>>2. Oversize both rows of holes to 1/8" (this might not even help -
>>I'll still get figure 8's)
>>3. Drill a new line of holes in between the pre-punched ones (might
>>look like hell under the HS)
>>
>>
>>I guess sometimes pre-punched is just a tad bit too helpful.
>>
>>
>>More ideas? Help!!
>>
>>
>>-Andy
>>
>>
>>________________________________ Message 6
>>_____________________________________
>>
>>
>>Time: 04:01:27 PM PST US
>>From: "Dan Checkoway" <dan@rvproject.com>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>http://www.lycoming.textron.com/main.jsp?bodyPage/pressReleases/july02/mostPowerfulFourCylinder.html
>>http://www.avweb.com/news/columns/189629-1.html
>>
>>There are apparently 11 shops which are now approved by Lycoming to do 390
>>build-ups. I would definitely talk to AeroSport Power
>>(www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
>>around to other build-up shops.
>>
>>)_( Dan
>>RV-7 N714D
>>http://www.rvproject.com
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 2:18 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Dan,
>> This is of course true, the cowling can be replaced being the least
>>expensive
>>item. Being new to he building process I've not heard of the 390 version.
>>Where
>>can I get some info ?.
>>
>>
>> Regards - Paul
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Monday, October 17, 2005 2:12 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Paul,
>>
>> My personal choice for an engine is exactly what I have on my plane,
>>the IO-360-A1B6.
>>I'm studying the IO-390 as well, and I look forward to seeing whether
>>it really lives up to the claims. I wonder whether the 390 will be
>>capable
>>of achieving the same degree of economy as the IO-360-A1B6.
>>
>> In any case, if you have the 180hp cowling, the angle valve engine
>>most likely
>>won't fit, so I'd recommend using a parallel valve 180hp variant. But to
>>me it seems kinda silly to pick an engine based on which cowling you have,
>>rather
>>than vice versa.
>>
>> So it's hard for me to make a recommendation. Which powerplant do you
>>WANT?
>>
>> )_( Dan
>>
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 12:33 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Thanks Dan,
>> I have studied your site so it was nice to hear from the man him
>>self.
>> I'm not sure that there would be to many wanting to trade down here
>>in Australia,
>>how ever if need be I may purchase a new cowl if it is to big a task
>>to alter the one I have. Which engine would be you choice for my 7A ?.
>>
>>
>> Paul Walter
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 2:11 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Charlie already covered the mount thing.
>>
>> I suspect you could sell or trade the cowling if you didn't want
>>to get into modifications. Seems like I see a cowling trade mentioned
>>about once a month or so on the lists & forums. Try posting to the forums
>>at http://www.vansairforce.net.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Saturday, October 15, 2005 7:15 PM
>> Subject: RV7-List: Engine - cowling
>>
>>
>> Hi guys,
>>
>> Glad to post my first question to the group, and is as follows.
>>
>> When ordering my kit I selected the engine mount and cowl for
>>the 180
>>hp io 360. My question is can I at this point choose to change to the 200
>>hp
>>model and then alter the cowling to remove air intake snorkel later and
>>glass
>>repair. Or is the whole engine mount for the 200hp a different
>>configuration.
>>
>>
>> Thanks guys
>>
>> Paul Walter
>>________________________________ Message 7
>>_____________________________________
>>
>>
>>Time: 04:02:42 PM PST US
>>From: "Dan Checkoway" <dan@rvproject.com>
>>Subject: Re: RV7-List: F-711 Bulkhead pre-punched hole alignment
>>
>>You need to bend the bulkhead flanges to match the tapering contour of the
>>fuselage.
>>I can see in your photos that they appear to be mostly "straight" rather
>>than tapered.
>>
>>By getting the bulkhead flanges to match the fuselage shape, that should
>>make a
>>big difference.
>>
>>)_( Dan
>>RV-7 N714D
>>http://www.rvproject.com
>> ----- Original Message -----
>> From: Andrew Olech
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 3:01 PM
>> Subject: RV7-List: F-711 Bulkhead pre-punched hole alignment
>>
>>
>> Hi all,
>>
>>
>> I've been working aft fuselage assembly on my RV-7. I am having some
>>hole misalignment
>>issues due to the pre-punched nature of the flanges on the F-711 bulkhead
>>assembly relative to the skin pre-punched holes. In most cases they are
>>off up to 7/8 or almost 1 hole diameter (3/32" dia hole). I've attached a
>>set
>>of pictures thrown into a .pdf (hope it goes through).
>>
>>
>> 1st picture gives an overview of the tailcone region, highlighting the
>>hole
>>rows in question
>>
>> 2nd picture is a close-up of the hole misalignment with one side clecoed
>>together
>>and lined up perfectly
>>
>> 3rd picture shows a top looking down x-section view of the flanges and
>>drawn-in
>>relative hole centerlines.
>>
>>
>> Thankfully, I haven't riveted together or primed this bulkhead yet - and
>>no,
>>it doesn't seem like riveting it together will help in any way - these
>>thick heavy
>>duty flanges (PITA, IMHO) are in intimate contact with each other and
>>don't
>>seem to want to come together any closer, I don't want to persuade the
>>skins
>>with a hole punch - I will just rip them. There are a total of 10 holes
>>per
>>side that are effected.
>>
>>
>> I think I have a few options, what do you suggest I do?
>>
>>
>> 1.. Bend the flanges straight and re-bend the radius tighter or make
>>the bends
>>such that the resulting flange will be shorter - thus the centerlines of
>>the
>>holes will come together closer.
>> 2.. Oversize both rows of holes to 1/8" (this might not even help -
>>I'll still
>>get figure 8's)
>> 3.. Drill a new line of holes in between the pre-punched ones (might
>>look like
>>hell under the HS)
>>
>>
>> I guess sometimes pre-punched is just a tad bit too helpful.
>>
>>
>> More ideas? Help!!
>>
>>
>> -Andy
>>
>>
>>________________________________ Message 8
>>_____________________________________
>>
>>
>>Time: 05:17:12 PM PST US
>>From: "William Gill" <wgill10@comcast.net>
>>Subject: RE: RV7-List: F-711 Bulkhead pre-punched hole alignment
>>
>>Hello Andy,
>>
>>This is a very common problem and one that Van's has recently addressed.
>>The new aft bulkhead is no longer pre-punched.just order a replacement
>>and match drill the aft bulkhead.
>>
>>Bill
>>
>>
>>-----Original Message-----
>>From: owner-rv7-list-server@matronics.com
>>[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Andrew Olech
>>Subject: RV7-List: F-711 Bulkhead pre-punched hole alignment
>>
>>Hi all,
>>
>>I've been working aft fuselage assembly on my RV-7. I am having some
>>hole misalignment issues due to the pre-punched nature of the flanges on
>>the F-711 bulkhead assembly relative to the skin pre-punched holes. In
>>most cases they are off up to 7/8 or almost 1 hole diameter (3/32" dia
>>hole). I've attached a set of pictures thrown into a .pdf (hope it goes
>>through).
>>
>>1st picture gives an overview of the tailcone region, highlighting the
>>hole rows in question
>>2nd picture is a close-up of the hole misalignment with one side clecoed
>>together and lined up perfectly
>>3rd picture shows a top looking down x-section view of the flanges and
>>drawn-in relative hole centerlines.
>>
>>Thankfully, I haven't riveted together or primed this bulkhead yet - and
>>no, it doesn't seem like riveting it together will help in any way -
>>these thick heavy duty flanges (PITA, IMHO) are in intimate contact with
>>each other and don't seem to want to come together any closer, I don't
>>want to persuade the skins with a hole punch - I will just rip them.
>>There are a total of 10 holes per side that are effected.
>>
>>I think I have a few options, what do you suggest I do?
>>
>>1. Bend the flanges straight and re-bend the radius tighter or
>>make the bends such that the resulting flange will be shorter - thus the
>>centerlines of the holes will come together closer.
>>2. Oversize both rows of holes to 1/8" (this might not even help
>>- I'll still get figure 8's)
>>3. Drill a new line of holes in between the pre-punched ones
>>(might look like hell under the HS)
>>
>>I guess sometimes pre-punched is just a tad bit too helpful.
>>
>>More ideas? Help!!
>>
>>-Andy
>>
>>
>>________________________________ Message 9
>>_____________________________________
>>
>>
>>Time: 05:26:24 PM PST US
>>From: "William Gill" <wgill10@comcast.net>
>>Subject: RE: RV7-List: Engine - cowling
>>
>>Here's another .. http://www.bpaengines.com/
>>
>>Allen Barrett
>>BPE, Inc.
>>www.barrettprecisionengines.com
>><http://www.barrettprecisionengines.com/>
>>(918) 835-1089 phone
>>
>>I just toured their facility last week and got a first class tour that
>>included looking at the IO-390X-A1E6 before assembly. All parts are
>>Lycoming, including the roller cam assembly. Great people and excellent
>>products.
>>
>>Bill
>>
>>-----Original Message-----
>>From: owner-rv7-list-server@matronics.com
>>[mailto:owner-rv7-list-server@matronics.com] On Behalf Of Dan Checkoway
>>Subject: Re: RV7-List: Engine - cowling
>>
>>http://www.lycoming.textron.com/main.jsp?bodyPage=/pressReleases/july02/
>>mostPowerfulFourCylinder.html
>>http://www.avweb.com/news/columns/189629-1.html
>>
>>There are apparently 11 shops which are now approved by Lycoming to do
>>390 build-ups. I would definitely talk to AeroSport Power
>>(www.aerosportpower.com) and Mattituck (www.mattituck.com), and shop
>>around to other build-up shops.
>>
>>)_( Dan
>>RV-7 N714D
>>http://www.rvproject.com
>>----- Original Message ----- From: Paul <mailto:pdwalter@bigpond.net.au>
>>Walter
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Dan,
>>This is of course true, the cowling can be replaced being the least
>>expensive item. Being new to he building process I've not heard of the
>>390 version. Where can I get some info ?.
>>
>>
>>Regards - Paul
>>----- Original Message ----- From: Dan Checkoway
>><mailto:dan@rvproject.com>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Paul,
>>
>>My personal choice for an engine is exactly what I have on my plane, the
>>IO-360-A1B6. I'm studying the IO-390 as well, and I look forward to
>>seeing whether it really lives up to the claims. I wonder whether the
>>390 will be capable of achieving the same degree of economy as the
>>IO-360-A1B6.
>>
>>In any case, if you have the 180hp cowling, the angle valve engine most
>>likely won't fit, so I'd recommend using a parallel valve 180hp variant.
>>But to me it seems kinda silly to pick an engine based on which cowling
>>you have, rather than vice versa.
>>
>>So it's hard for me to make a recommendation. Which powerplant do you
>>WANT?
>>
>>)_( Dan
>>
>>----- Original Message ----- From: Paul <mailto:pdwalter@bigpond.net.au>
>>Walter
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Thanks Dan,
>>I have studied your site so it was nice to hear from the man him self.
>>I'm not sure that there would be to many wanting to trade down here in
>>Australia, how ever if need be I may purchase a new cowl if it is to big
>>a task to alter the one I have. Which engine would be you choice for my
>>7A ?.
>>
>>
>>Paul Walter
>>----- Original Message ----- From: Dan Checkoway
>><mailto:dan@rvproject.com>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Charlie already covered the mount thing.
>>
>>I suspect you could sell or trade the cowling if you didn't want to get
>>into modifications. Seems like I see a cowling trade mentioned about
>>once a month or so on the lists & forums. Try posting to the forums at
>>http://www.vansairforce.net.
>>
>>)_( Dan
>>RV-7 N714D
>>http://www.rvproject.com
>>----- Original Message ----- From: Paul <mailto:pdwalter@bigpond.net.au>
>>Walter
>>Subject: RV7-List: Engine - cowling
>>
>>Hi guys,
>>
>>Glad to post my first question to the group, and is as follows.
>>
>>When ordering my kit I selected the engine mount and cowl for the 180 hp
>>io 360. My question is can I at this point choose to change to the 200
>>hp model and then alter the cowling to remove air intake snorkel later
>>and glass repair. Or is the whole engine mount for the 200hp a different
>>configuration.
>>
>>
>>Thanks guys
>>
>>Paul Walter
>>
>>________________________________ Message 10
>>____________________________________
>>
>>
>>Time: 06:10:57 PM PST US
>>From: "wilkie" <wilkie1@charter.net>
>>Subject: Re: RV7-List: Engine - cowling
>>
>>Another place to find info about the IO390 is at:
>>http://www.bpaengines.com/site.html. The engine is listed under their
>>"products" section and includes a brief summary about the engine.
>>
>>Barrett makes some killer performance engines used by some of the most
>>well known
>>acro pilots around. Their prices may be higher but I doubt anyone could
>>question
>>their quality.
>>
>>Hope it helps........
>>Scott Wilkinson
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 4:18 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Dan,
>> This is of course true, the cowling can be replaced being the least
>>expensive
>>item. Being new to he building process I've not heard of the 390 version.
>>Where
>>can I get some info ?.
>>
>>
>> Regards - Paul
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Monday, October 17, 2005 2:12 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Paul,
>>
>> My personal choice for an engine is exactly what I have on my plane,
>>the IO-360-A1B6.
>>I'm studying the IO-390 as well, and I look forward to seeing whether
>>it really lives up to the claims. I wonder whether the 390 will be
>>capable
>>of achieving the same degree of economy as the IO-360-A1B6.
>>
>> In any case, if you have the 180hp cowling, the angle valve engine
>>most likely
>>won't fit, so I'd recommend using a parallel valve 180hp variant. But to
>>me it seems kinda silly to pick an engine based on which cowling you have,
>>rather
>>than vice versa.
>>
>> So it's hard for me to make a recommendation. Which powerplant do you
>>WANT?
>>
>> )_( Dan
>>
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 12:33 AM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Thanks Dan,
>> I have studied your site so it was nice to hear from the man him
>>self.
>> I'm not sure that there would be to many wanting to trade down here
>>in Australia,
>>how ever if need be I may purchase a new cowl if it is to big a task
>>to alter the one I have. Which engine would be you choice for my 7A ?.
>>
>>
>> Paul Walter
>> ----- Original Message -----
>> From: Dan Checkoway
>> To: rv7-list@matronics.com
>> Sent: Sunday, October 16, 2005 2:11 PM
>> Subject: Re: RV7-List: Engine - cowling
>>
>>
>> Charlie already covered the mount thing.
>>
>> I suspect you could sell or trade the cowling if you didn't want
>>to get into modifications. Seems like I see a cowling trade mentioned
>>about once a month or so on the lists & forums. Try posting to the forums
>>at http://www.vansairforce.net.
>>
>> )_( Dan
>> RV-7 N714D
>> http://www.rvproject.com
>> ----- Original Message -----
>> From: Paul Walter
>> To: rv7-list@matronics.com
>> Sent: Saturday, October 15, 2005 7:15 PM
>> Subject: RV7-List: Engine - cowling
>>
>>
>> Hi guys,
>>
>> Glad to post my first question to the group, and is as follows.
>>
>> When ordering my kit I selected the engine mount and cowl for
>>the 180
>>hp io 360. My question is can I at this point choose to change to the 200
>>hp
>>model and then alter the cowling to remove air intake snorkel later and
>>glass
>>repair. Or is the whole engine mount for the 200hp a different
>>configuration.
>>
>>
>> Thanks guys
>>
>> Paul Walter
>>________________________________ Message 11
>>____________________________________
>>
>>
>>Time: 06:57:59 PM PST US
>>From: Frank Stringham <fstringham7a@yahoo.com>
>>Subject: Re: RV7-List: F-711 Bulkhead pre-punched hole alignment
>>
>>Andy
>>
>>A few weeks back I had this same problem...PLUS.....The plus was there was
>>a slight
>>miss alignment of the flanges between the forward and aft potions of the
>>bulkhead......But by the looks of your pictures it seems your fore / aft
>>alignment
>>is ok. Now for your problem: First try what Dan suggested. If that doesn't
>>work go with the 426-4 rivets (1/8) I did and it came out fine.
>>
>>Frank at SGU and SLC Fuse under construction.....finish will be
>>inventoried tomorrow!!!!!!!!!!!!!Any
>>body got Oh lets say about 30k for my FWF stuff
>>
>>Andrew Olech <olechap@comcast.net> wrote:
>>
>>Hi all,
>>
>>
>>Ive been working aft fuselage assembly on my RV-7. I am having some hole
>>misalignment
>>issues due to the pre-punched nature of the flanges on the F-711 bulkhead
>>assembly relative to the skin pre-punched holes. In most cases they are
>>off
>>up to 7/8 or almost 1 hole diameter (3/32 dia hole). Ive attached a set
>>of
>>pictures thrown into a .pdf (hope it goes through).
>>
>>
>>1st picture gives an overview of the tailcone region, highlighting the
>>hole rows
>>in question
>>
>>2nd picture is a close-up of the hole misalignment with one side clecoed
>>together
>>and lined up perfectly
>>
>>3rd picture shows a top looking down x-section view of the flanges and
>>drawn-in
>>relative hole centerlines.
>>
>>
>>Thankfully, I havent riveted together or primed this bulkhead yet and no,
>>it doesnt
>>seem like riveting it together will help in any way these thick heavy
>>duty
>>flanges (PITA, IMHO) are in intimate contact with each other and dont seem
>>to want to come together any closer, I dont want to persuade the skins
>>with a
>>hole punch I will just rip them. There are a total of 10 holes per side
>>that
>>are effected.
>>
>>
>>I think I have a few options, what do you suggest I do?
>>
>>
>> Bend the flanges straight and re-bend the radius tighter or make the
>>bends such
>>that the resulting flange will be shorter thus the centerlines of the
>>holes
>>will come together closer.
>> Oversize both rows of holes to 1/8 (this might not even help Ill
>>still get
>>figure 8s)
>> Drill a new line of holes in between the pre-punched ones (might look
>>like hell
>>under the HS)
>>
>>
>>I guess sometimes pre-punched is just a tad bit too helpful.
>>
>>
>>More ideas? Help!!
>>
>>
>>-Andy
>>
>>
>>
>>---------------------------------
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
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