Today's Message Index:
----------------------
1. 05:35 AM - The 180 hp -9 (Rick Smith)
2. 06:18 AM - Re: Re: 180hp engine (Larry PERRYMAN)
3. 06:27 AM - Re: The 180 hp -9 (Larry PERRYMAN)
4. 08:04 AM - Floats (Warren W Hurd)
5. 10:03 AM - [ Bob Olds ] : New Email List Photo Share Available! (Email List Photo Shares)
6. 10:29 AM - Re: The 180 hp -9 (DThomas773@aol.com)
7. 11:55 AM - rv9a llimitations, 180hp engine (ivo welch)
8. 12:44 PM - Re: The 180 hp -9 (Phil Brown)
9. 12:49 PM - Re: rv9a llimitations, 180hp engine (Stein Bruch)
10. 01:18 PM - Re: rv9a llimitations, 180hp engine (Andy Karmy)
11. 01:27 PM - Re: The 180 hp -9 (DThomas773@aol.com)
12. 03:19 PM - Re: rv9a llimitations, 180hp engine (Pitner, Timothy)
Message 1
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
09/03/2003 06:34:55
--> RV9-List message posted by: Rick Smith <ricks3@us.ibm.com>
Hi Guys thanks for the input on the question about using an O-360. I am
the original poster. The reason I brought it up is because a 0-360 with a
fixed pitch is close to the same weight and definately less expensive that
an 0-320 with a Hartzell maybe $7,000 less when you add the prop, govenor,
cable, etc.
Concerning the speed limits. I would certainly respect the speeds Van
designed for.
I built and flew a RV-6 that weighed 1010 pounds with a 0-360 and a
Sensenich for about 400 hours. It took 2-years of tinkering to get its top
speed at sea level from 195 when built to 210mph. At altitude of course
you always see lower.
So wouldnt the same thing apply to the -9?
Given that there are many RVs flying with 300hp such as the Rockets,
Harmons, etc and they do have -4 wings and tails I believe there is a
slight bit of reserve. Although as a conservative perosn I dont want to
give that away.
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RE: 180hp engine |
09/03/2003 03:18:35 PM,
Serialize complete at 09/03/2003 03:18:35 PM
--> RV9-List message posted by: "Larry PERRYMAN" <larry.perryman@atofina.com>
Mark,
It depends on the plane. There is one RV-7 doing 150 knots in a normally
aspirated engine with the MT prop. I generally cruse about 160 MPH in my
9A at about 75% or less. If you want to outdo the Lycoming, then you need
the supercharger. In one test at 12k at Oshkosh in the 6, the supercharger
gave an additional 20+ knots average on a two way run.
My best guess is they stack up this way.
Lycoming FP
Subaru with Quinti Prop
Subaru with MT prop
Subaru with Quinti and Supercharger
Lycoming with CS prop
Subaru with MT and Supercharger
Probably less than 20 mph top to bottom difference.
Vibration - Subaru hands down
Fuel economy - about a wash.
This is my assessment of the two for what it is worth.
Regards,
Larry Perryman
Voice Supervisor
ATOFINA Petrochemicals Inc.
(281) 227-5550
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: The 180 hp -9 |
09/03/2003 03:27:25 PM,
Serialize complete at 09/03/2003 03:27:25 PM
--> RV9-List message posted by: "Larry PERRYMAN" <larry.perryman@atofina.com>
Rick,
One point on the Rockets. They do not have the same wing and tail as the
4. The wing is clipped and the ribs redistributed in the remaining length.
The skins are heavier on both as I recall.
Regards,
Larry Perryman
Voice Supervisor
ATOFINA Petrochemicals Inc.
(281) 227-5550
Rick Smith <ricks3@us.ibm.com>
Sent by: owner-rv9-list-server@matronics.com
09/03/2003 07:34 AM
Please respond to rv9-list
To: rv9-list@matronics.com
cc:
Subject: RV9-List: The 180 hp -9
--> RV9-List message posted by: Rick Smith <ricks3@us.ibm.com>
Hi Guys thanks for the input on the question about using an O-360. I am
the original poster. The reason I brought it up is because a 0-360 with a
fixed pitch is close to the same weight and definately less expensive that
an 0-320 with a Hartzell maybe $7,000 less when you add the prop, govenor,
cable, etc.
Concerning the speed limits. I would certainly respect the speeds Van
designed for.
I built and flew a RV-6 that weighed 1010 pounds with a 0-360 and a
Sensenich for about 400 hours. It took 2-years of tinkering to get its
top
speed at sea level from 195 when built to 210mph. At altitude of course
you always see lower.
So wouldnt the same thing apply to the -9?
Given that there are many RVs flying with 300hp such as the Rockets,
Harmons, etc and they do have -4 wings and tails I believe there is a
slight bit of reserve. Although as a conservative perosn I dont want to
give that away.
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> RV9-List message posted by: Warren W Hurd <warren@ahyup.com>
Thought I would add me own two cents to the O-360 thread,
The ONLY reason that I would consider a O-360 in a RV9 would be floats!
Add some big draggy floats and keep the top speed down,
and other associated costs up. Sure would be fun though.
Of course I am putting a O-235 in mine.
I am no enginer.
Warren Hurd
90454 wings
http://ahyup.com
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | [ Bob Olds ] : New Email List Photo Share Available! |
--> RV9-List message posted by: Email List Photo Shares <pictures@matronics.com>
A new Email List Photo Share is available:
Poster: Bob Olds <Oldsfolks@aol.com>
Subject: How to build cheap strobe/tail wingtip lights
http://www.matronics.com/photoshare/Oldsfolks@aol.com.09.03.2003/index.html
o Main Photo Share Index
http://www.matronics.com/photoshare
o Submitting a Photo Share
If you wish to submit a Photo Share of your own, please include the
following information along with your email message and files:
1) Email List or Lists that they are related to:
2) Your Full Name:
3) Your Email Address:
4) One line Subject description:
5) Multi-line, multi-paragraph description of topic:
6) One-line Description of each photo or file:
Email the information above and your files and photos to:
pictures@matronics.com
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: The 180 hp -9 |
--> RV9-List message posted by: DThomas773@aol.com
I have refrained from jumping into this fray until I read the comment lumping
the 9 in with the other RV's. Next time your at the factory take a look at
the wing spars that are waiting to be made up into kits. Compare the beef in
the other spars to the size of the 9 spar. Their is a very dramatic difference
in size, with the 9 being appreciatively smaller.
Dennis Thomas
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rv9a llimitations, 180hp engine |
--> RV9-List message posted by: ivo welch <ivo.welch@yale.edu>
I got permission from vans to repost their article on engine sizes
(flutter/failure):
http://welch.som.yale.edu/n994ks/
then, at the bottom, there is the relevant link.
I do wonder why it does not make sense to go with a 180hp engine and use
the engine reserves only in situation where the TAS is rather low (e.g.,
high altitudes, climbing). Actually, there should be an automatic
system that should reduce throttle in high TAS situations. This should
not be difficult to put together, and could come in handy in many other
situations, too, e.g., dives.
/iaw
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: The 180 hp -9 |
--> RV9-List message posted by: "Phil Brown" <philipbrown@onetel.net.uk>
Hi, phil brown from the U,K,here......just read your comment on 9
spars......how do they compare with the others and how do they vary
dimensionally
----- Original Message -----
From: <DThomas773@aol.com>
Subject: Re: RV9-List: The 180 hp -9
> --> RV9-List message posted by: DThomas773@aol.com
>
> I have refrained from jumping into this fray until I read the comment
lumping
> the 9 in with the other RV's. Next time your at the factory take a look at
> the wing spars that are waiting to be made up into kits. Compare the beef
in
> the other spars to the size of the 9 spar. Their is a very dramatic
difference
> in size, with the 9 being appreciatively smaller.
>
> Dennis Thomas
>
>
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rv9a llimitations, 180hp engine |
--> RV9-List message posted by: "Stein Bruch" <stein@steinair.com>
Again....Why...
Where is everyone getting the idea that this planes even remotely "needs"
this reserve???
Considering the original design was for 118 hp, isn't a %36 increase (160hp)
"reserve" enough??
You need to ask yourselves why did you choose the RV9 to begin with. If you
want one of Van's "Hotrods", build a 7 or 8. The RV9 is a phenomenal
airplane, but it is NOT a 7/8, and was designed as a MUCH different
airplanes.
Also, re: the "rocket" reference about them being the "same" as an RV.
They're NOT. The wings, Fuselage, Tail, Engine Mount, Gear Legs, etc...
have all been mondified and re-engineered. Why do it to a -9??? If you
want a rocket, there are TWO companies selling kits for them.
Sorry to sound caustic, but take a few minutes and look at the mission
design of the airplane. Who told you guys that the RV9 is lacking in
performance on 160hp and NEEDS a reserve anyway? This plane flies
beautifully and like a raped ape on 160hp!
Flame Away!
Cheers,
Stein Bruch
Minneapolis
http://www.steinair.com
-----Original Message-----
From: owner-rv9-list-server@matronics.com
[mailto:owner-rv9-list-server@matronics.com]On Behalf Of ivo welch
Subject: RV9-List: rv9a llimitations, 180hp engine
I do wonder why it does not make sense to go with a 180hp engine and use
the engine reserves only in situation where the TAS is rather low (e.g.,
high altitudes, climbing). Actually, there should be an automatic
system that should reduce throttle in high TAS situations. This should
not be difficult to put together, and could come in handy in many other
situations, too, e.g., dives.
/iaw
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rv9a llimitations, 180hp engine |
--> RV9-List message posted by: "Andy Karmy" <andy@karmy.com>
Thought I would throw in a little data for grins...
My RV9A weighs 1034lbs, 160HP Lyc
Sealevel 2 very large people on board... 100ish over gross, 1000fpm climb with
Sensenich FP cruise prop.
Then this last weekend, my Son and I and mostly full fuel were still climbing at
600fpm at 13.5K ft out by Mt Rainier.
I am more than happy with the performance that I am getting
- Andy
---------- Original Message ----------------------------------
From: "Stein Bruch" <stein@steinair.com>
>Where is everyone getting the idea that this planes even remotely "needs"
>this reserve???
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: The 180 hp -9 |
--> RV9-List message posted by: DThomas773@aol.com
The RV-9 spars are roughly the same size in their external dimension( width,
length etc.), but the heavy aluminum bars riveted to the web, top and bottom,
are about 1/3 smaller. They are as heavy as they need to be to accomplish the
goals and mission of the airplane. They are not designed for an areobatic
airplane or for an airplane with an engine greater than 180 HP.
Dennis Thomas
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rv9a llimitations, 180hp engine |
--> RV9-List message posted by: "Pitner, Timothy" <TPitner@flowcorp.com>
Andy, is your rv9 painted yet? And do you fly out of Thund?
Tim
-----Original Message-----
From: Andy Karmy [mailto:andy@karmy.com]
Subject: RE: RV9-List: rv9a llimitations, 180hp engine
--> RV9-List message posted by: "Andy Karmy" <andy@karmy.com>
Thought I would throw in a little data for grins...
My RV9A weighs 1034lbs, 160HP Lyc
Sealevel 2 very large people on board... 100ish over gross, 1000fpm climb
with Sensenich FP cruise prop.
Then this last weekend, my Son and I and mostly full fuel were still
climbing at 600fpm at 13.5K ft out by Mt Rainier.
I am more than happy with the performance that I am getting
- Andy
---------- Original Message ----------------------------------
From: "Stein Bruch" <stein@steinair.com>
>Where is everyone getting the idea that this planes even remotely "needs"
>this reserve???
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|