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
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| Subject: | Re: 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
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| Subject: | Re: 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
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| Subject: | Re: 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
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| Subject: | Re: 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
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| Subject: | 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
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| Subject: | Re: 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
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| Subject: | Re: 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
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| Subject: | 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
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| Subject: | 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
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| Subject: | Re: 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
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| Subject: | Re: 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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