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  #1  
Old 07-19-2017, 12:19 PM
ALMARTON ALMARTON is offline
 
Join Date: Mar 2010
Location: BRAZIL
Posts: 130
Lightbulb AILERON DEFLECTION AND ROLL RATE

Folks,

Bought my RV-7A did not build it myself. So I do not have access to some specifications.

I've been noticing some slow roll rate on it. I did time the aileron roll rate on it as 75 to 85 degrees per second that is slow when compared with the average 105 to 115 deg/sec on others RV-7As.

So I wonder if I may have to adjust aileron deflections or it may be some issue involving AP installation or bell crank related.

So I please ask anyone with the information which is the aileron deflection limits for a RV7A. Or if someone had similar problems and how it was corrected.

* As it is it is rolling as slow as a RV9 and it is not fit to aerobatics (main purpose when buying the 7)

Many thanks.
__________________
Alexandre "neck" Marton
Brazil
RV7A (8/2015 built by FLYER)
Lycoming 180 HP - YIO-360-M1B, Hartzell C2YR-1BFP/F7497 72, Garmin panel - G3X Touch, GTN650, GTS800, WX-500, BATT CONCORDE RG-25XC AEROBATIC SEALED.
-------------
Others: RV9A
Lycoming XIO320-D1A, Hartzell HC-C2YL-1BF/F7663-4 , CS GOVERNOR MTV-12-B, DYNON D180
AND GARMIN AVIONICS
(Sold with aprox 300hrs flown from Dec/2010 -- JUN/2014)
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  #2  
Old 07-19-2017, 12:30 PM
flyinga flyinga is offline
 
Join Date: Dec 2007
Location: Fredericksburg, TX
Posts: 452
Default

Ailerons: 25-32 degrees up; 15-17 degrees down.
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Jim Averett
RV-8
TS36 - Silver Wings
Fredericksburg, TX
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  #3  
Old 07-19-2017, 12:40 PM
ALMARTON ALMARTON is offline
 
Join Date: Mar 2010
Location: BRAZIL
Posts: 130
Default

Quote:
Originally Posted by flyinga View Post
Ailerons: 25-32 degrees up; 15-17 degrees down.
That is for the rv 7 Jim? Many thanks!
__________________
Alexandre "neck" Marton
Brazil
RV7A (8/2015 built by FLYER)
Lycoming 180 HP - YIO-360-M1B, Hartzell C2YR-1BFP/F7497 72, Garmin panel - G3X Touch, GTN650, GTS800, WX-500, BATT CONCORDE RG-25XC AEROBATIC SEALED.
-------------
Others: RV9A
Lycoming XIO320-D1A, Hartzell HC-C2YL-1BF/F7663-4 , CS GOVERNOR MTV-12-B, DYNON D180
AND GARMIN AVIONICS
(Sold with aprox 300hrs flown from Dec/2010 -- JUN/2014)
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  #4  
Old 07-19-2017, 01:32 PM
flyinga flyinga is offline
 
Join Date: Dec 2007
Location: Fredericksburg, TX
Posts: 452
Default

Actually it's for the RV8 but the wings are the same on the 7 and 8.
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Jim Averett
RV-8
TS36 - Silver Wings
Fredericksburg, TX
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  #5  
Old 07-20-2017, 01:04 PM
RV7A Flyer's Avatar
RV7A Flyer RV7A Flyer is offline
 
Join Date: Jul 2013
Location: US
Posts: 1,304
Default

You should have gotten the build manual along with the plane. If not, get one from Van's.

Section 15:

Design Travel in degrees Maximum Up/Down Minimum Up/Down
Elevator 30/25 25/20
Aileron 32/17 25/15
Rudder 35/35 l/r 30/30 l/r
Flaps 40/45
Trim Tab 25/35
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  #6  
Old 07-20-2017, 01:33 PM
ALMARTON ALMARTON is offline
 
Join Date: Mar 2010
Location: BRAZIL
Posts: 130
Default

Quote:
Originally Posted by RV7A Flyer View Post
You should have gotten the build manual along with the plane. If not, get one from Van's.

Section 15:

Design Travel in degrees Maximum Up/Down Minimum Up/Down
Elevator 30/25 25/20
Aileron 32/17 25/15
Rudder 35/35 l/r 30/30 l/r
Flaps 40/45
Trim Tab 25/35
Nice thanks!
__________________
Alexandre "neck" Marton
Brazil
RV7A (8/2015 built by FLYER)
Lycoming 180 HP - YIO-360-M1B, Hartzell C2YR-1BFP/F7497 72, Garmin panel - G3X Touch, GTN650, GTS800, WX-500, BATT CONCORDE RG-25XC AEROBATIC SEALED.
-------------
Others: RV9A
Lycoming XIO320-D1A, Hartzell HC-C2YL-1BF/F7663-4 , CS GOVERNOR MTV-12-B, DYNON D180
AND GARMIN AVIONICS
(Sold with aprox 300hrs flown from Dec/2010 -- JUN/2014)
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  #7  
Old 07-20-2017, 01:49 PM
RV7A Flyer's Avatar
RV7A Flyer RV7A Flyer is offline
 
Join Date: Jul 2013
Location: US
Posts: 1,304
Default

Quote:
Originally Posted by ALMARTON View Post
Nice thanks!
You're welcome, but to reiterate...either get the original build manual from whomever you bought the plane from, or get a copy from Van's somehow. There is much, much more in there you'll need to know to own and maintain the aircraft.
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  #8  
Old 07-20-2017, 08:19 PM
spatsch spatsch is offline
 
Join Date: Nov 2014
Location: Randolph, NJ
Posts: 150
Default

Quote:
Originally Posted by ALMARTON View Post
Folks,

Bought my RV-7A did not build it myself. So I do not have access to some specifications.

I've been noticing some slow roll rate on it. I did time the aileron roll rate on it as 75 to 85 degrees per second that is slow when compared with the average 105 to 115 deg/sec on others RV-7As.

So I wonder if I may have to adjust aileron deflections or it may be some issue involving AP installation or bell crank related.

So I please ask anyone with the information which is the aileron deflection limits for a RV7A. Or if someone had similar problems and how it was corrected.

* As it is it is rolling as slow as a RV9 and it is not fit to aerobatics (main purpose when buying the 7)

Many thanks.
How do you measure your role rate?

Reason I asked is that I noticed a lower roll rate then I though I should have in my RV-8 at one point too.

I was certain I was using full aileron deflection, however, when I looked at the Dynon logs (in particular the AP roll indicator which records your stick position 16 times a second if the AP is on or not) I noticed that I did start out with full deflection but then I seem to have relaxed my stick just a little bit... .

In my case that averaged out to 90degrees versus 120 degrees. Actually looking at the logs now I see about 140 degrees when the roll is established which seems to average out to 120 degrees for a one turn roll (you have to start and stop rolling ...).

All easy to work out with the Dynon logs... .

So before taking the controls apart you might double-check your measurements... .

Oliver
__________________
Oliver Spatscheck
RV-8 & J-3
N-2EQ & NC-49762
http://www.spatscheck.com/oliver
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  #9  
Old 07-21-2017, 07:29 AM
ALMARTON ALMARTON is offline
 
Join Date: Mar 2010
Location: BRAZIL
Posts: 130
Default

Quote:
Originally Posted by RV7A Flyer View Post
You're welcome, but to reiterate...either get the original build manual from whomever you bought the plane from, or get a copy from Van's somehow. There is much, much more in there you'll need to know to own and maintain the aircraft.

I got a owners manual... and I service it on a authorized shop. I got hold of some plans also.
__________________
Alexandre "neck" Marton
Brazil
RV7A (8/2015 built by FLYER)
Lycoming 180 HP - YIO-360-M1B, Hartzell C2YR-1BFP/F7497 72, Garmin panel - G3X Touch, GTN650, GTS800, WX-500, BATT CONCORDE RG-25XC AEROBATIC SEALED.
-------------
Others: RV9A
Lycoming XIO320-D1A, Hartzell HC-C2YL-1BF/F7663-4 , CS GOVERNOR MTV-12-B, DYNON D180
AND GARMIN AVIONICS
(Sold with aprox 300hrs flown from Dec/2010 -- JUN/2014)
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  #10  
Old 07-21-2017, 07:32 AM
ALMARTON ALMARTON is offline
 
Join Date: Mar 2010
Location: BRAZIL
Posts: 130
Default

Quote:
Originally Posted by spatsch View Post
How do you measure your role rate?

Reason I asked is that I noticed a lower roll rate then I though I should have in my RV-8 at one point too.

I was certain I was using full aileron deflection, however, when I looked at the Dynon logs (in particular the AP roll indicator which records your stick position 16 times a second if the AP is on or not) I noticed that I did start out with full deflection but then I seem to have relaxed my stick just a little bit... .

In my case that averaged out to 90degrees versus 120 degrees. Actually looking at the logs now I see about 140 degrees when the roll is established which seems to average out to 120 degrees for a one turn roll (you have to start and stop rolling ...).

All easy to work out with the Dynon logs... .

So before taking the controls apart you might double-check your measurements... .

Oliver
Oliver thanks for the inputs... its is not the case with me.
__________________
Alexandre "neck" Marton
Brazil
RV7A (8/2015 built by FLYER)
Lycoming 180 HP - YIO-360-M1B, Hartzell C2YR-1BFP/F7497 72, Garmin panel - G3X Touch, GTN650, GTS800, WX-500, BATT CONCORDE RG-25XC AEROBATIC SEALED.
-------------
Others: RV9A
Lycoming XIO320-D1A, Hartzell HC-C2YL-1BF/F7663-4 , CS GOVERNOR MTV-12-B, DYNON D180
AND GARMIN AVIONICS
(Sold with aprox 300hrs flown from Dec/2010 -- JUN/2014)
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