VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Education > Flight Testing
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05-02-2007, 08:40 AM
rv72004 rv72004 is offline
 
Join Date: Nov 2005
Posts: 452
Default RV-7 vs RV-8 aileron response

I flew the 8 a little bit the other day and it seemed to me the ailerons are lighter and roll quicker than the 7 . As this is the first in a 8 but have quite a bit of time in a 7 , I am still deliberating if it was my imagination.
I must say it really felt nicer than my 7. Was I imagining it ?
EJ
Reply With Quote
  #2  
Old 05-02-2007, 09:17 AM
MikeJ 7A's Avatar
MikeJ 7A MikeJ 7A is offline
 
Join Date: Mar 2006
Location: Deadwood, SD
Posts: 89
Default Center of mass

With two folks sitting in tandem (vs side by side) the center of mass will be closer to the roll axis. Seems like it should take less force to start/stop a roll.

MikeJ
__________________
RV-7A, VAF# 837, Working on the Wings
"Measure Twice, Cut Once"
Reply With Quote
  #3  
Old 05-02-2007, 09:27 AM
Ironflight's Avatar
Ironflight Ironflight is offline
VAF Moderator / Line Boy
 
Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,247
Default

I can't speak to a 7, but I have flown two different -6's in the past month, and was actually surprised at how light an nimble they felt in roll compared to my -8. Not that the -8 is heavy mind you....
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
Reply With Quote
  #4  
Old 05-02-2007, 09:30 AM
n5lp's Avatar
n5lp n5lp is offline
fugio ergo sum
 
Join Date: Apr 2006
Location: Carlsbad, NM
Posts: 1,912
Default

Quote:
Originally Posted by rv72004
I flew the 8 a little bit the other day and it seemed to me the ailerons are lighter and roll quicker than the 7 ...
I wonder if the stick lengths are the same? A shorter stick is going to require higher forces.
__________________
Larry Pardue
Carlsbad, NM

RV-6 N441LP Flying
Reply With Quote
  #5  
Old 05-02-2007, 10:39 AM
dan's Avatar
dan dan is offline
 
Join Date: Mar 2005
Location: ...
Posts: 2,049
Default

Trailing edge radius on the aileron would probably have a bigger effect than probably anything else, right?
__________________
Dan Checkoway RV-7
Reply With Quote
  #6  
Old 05-02-2007, 01:51 PM
Norman CYYJ Norman CYYJ is offline
 
Join Date: Feb 2005
Location: Victoria B.C.
Posts: 1,265
Default

I agree with Dan.
Reply With Quote
  #7  
Old 05-02-2007, 06:16 PM
L.Adamson's Avatar
L.Adamson L.Adamson is offline
 
Join Date: Apr 2005
Location: KSLC
Posts: 4,021
Default

Quote:
Originally Posted by dan
Trailing edge radius on the aileron would probably have a bigger effect than probably anything else, right?
Some trailing edges on dedicated aerobatic aircraft, are squared off. As if you ran a saw, and cut the last inch off.

L.Adamson
Reply With Quote
  #8  
Old 05-02-2007, 06:24 PM
Scott Will's Avatar
Scott Will Scott Will is offline
 
Join Date: Jan 2005
Location: ATL
Posts: 734
Default

This isn't the 7 vs 8 comparison you were looking for ... but I agree with Paul.

When I took my 7A up for the first time after transitioning a week earlier in Pierre's 6A, I thought... WOW! This thing is a whole lot slower in roll! The stick forces to me are a whole lot lighter, especially in roll, when flying the 6A. Perhaps it's because of the slightly shorter wing?
__________________
Scott Will
http://will2fly.com
CFI - CFII - MEI
FLYING RV-7A IO-360 @ KPDK

Reply With Quote
  #9  
Old 05-03-2007, 07:08 AM
pierre smith's Avatar
pierre smith pierre smith is offline
 
Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
Default Ahem...ahem...

Billy Waters had a 6 and now flies an 8. He has often told me that the 6 was a much better flier. BTW, I didn't shorten my stick any. The Van's pistol grips are at the same height as the original stick. Experienced RV fliers will, to a man, tell you that the -4 is the best flier of the bunch.

Thanks, Scott,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga

It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132


Dues gladly paid!
Reply With Quote
  #10  
Old 05-03-2007, 07:31 AM
rvpilot's Avatar
rvpilot rvpilot is offline
 
Join Date: Jan 2005
Posts: 335
Default Yep!

Paul confirmed it, the -6A I had felt much quicker in roll than my -8. Although , if you get the CG back in the -8 by loading the rear, it helps the stick forces considerably. I can imagine that the -7 would be about like an -8 which is aft loaded. While still a great flying airplane, not quite as quick as a -6.
Kahana, you've flown all three, comments??
__________________
Bill Waters
Based KCVC (Covington, GA)
RV6A - Gone, but not forgotten!
RV8 - Gone too, now winning races in the RV Gold Class!
RV4 - Flying!!!
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 04:44 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.