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  #1  
Old 07-20-2014, 02:35 PM
RV7 Bruno RV7 Bruno is offline
 
Join Date: Jun 2013
Location: Carpinteria
Posts: 10
Default Aileron Adjustment

Having some problems with the ailerons. When flying if you let go of the stick she does a drastic hard right turn. You can also see they are not centered when on the ground. I would hate to loose aileron control while in the air. Any information would be great.
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  #2  
Old 07-20-2014, 03:00 PM
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Kahuna Kahuna is offline
 
Join Date: Dec 2004
Location: Gold Hill, NC25
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Have you followed the rigging instructions in the plans? They will find a natural center. You probably have a heavy wing or other problem. Example pants, fairings etc out of alignment.
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  #3  
Old 07-20-2014, 03:09 PM
petersb petersb is offline
 
Join Date: Mar 2008
Location: Toronto
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Quote:
Originally Posted by RV7 Bruno View Post
Having some problems with the ailerons. When flying if you let go of the stick she does a drastic hard right turn. You can also see they are not centered when on the ground. I would hate to loose aileron control while in the air. Any information would be great.
Check vertical height of ailerons. Slot the aileron bracket holes and move aileron vertically relative to the wing, it is written up in the Vans heavy wing document.
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  #4  
Old 07-20-2014, 03:34 PM
johnfurey johnfurey is offline
 
Join Date: May 2005
Posts: 233
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After doing all the steps in Vans letter I still had a very heavy right wing. Here are my notes from process.

I tried to fix the heavy right wing by lowering the outboard end of the left aileron by .080 but it made it worse. So I returned everything to where it was.

I removed the right aileron and milled the brackets to drop the aileron .060 and put it all back together.

A short flight tonight confirmed that lowering the right aileron corrected the heavy wing. I got lucky and it turned out perfect.
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  #5  
Old 07-22-2014, 07:30 PM
RV7 Bruno RV7 Bruno is offline
 
Join Date: Jun 2013
Location: Carpinteria
Posts: 10
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Thanks everyone. I have over 500 hours on the plane. This is a new problem. I thought maybe it had something to do with my auto pilot.
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  #6  
Old 05-02-2015, 12:07 PM
cmarbach cmarbach is offline
 
Join Date: Oct 2009
Location: Boca Raton, FL
Posts: 10
Default Update Please

We too have a left wing that has suddenly become heavy and requires lots of right trim.

What did your problem turn out to be? Maybe we are having the same problem.
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  #7  
Old 05-02-2015, 12:23 PM
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rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Any sudden change in roll trim when no rigging changes have been made is likely caused by a shape change in an aileron (this can happen by someone aggressively squeezing one of your ailerons).

Use a straight edge to check for proper trailing edge shape as described in paragraph 5.7 in THIS document.
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  #8  
Old 05-31-2015, 08:09 PM
atalla atalla is offline
 
Join Date: Jul 2014
Location: Whistler BC
Posts: 207
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Quote:
Originally Posted by rvbuilder2002 View Post
Any sudden change in roll trim when no rigging changes have been made is likely caused by a shape change in an aileron (this can happen by someone aggressively squeezing one of your ailerons).

Use a straight edge to check for proper trailing edge shape as described in paragraph 5.7 in THIS document.
Priming Control tubes ?????
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  #9  
Old 06-01-2015, 01:19 PM
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Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,189
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If you have the typical Ray Allen roll trim, double-check the rigging under the seats. You might have a broken spring or safety wire. These are what keep the controls centered on the ground as well as in the air.
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  #10  
Old 06-01-2015, 01:32 PM
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Brantel Brantel is offline
 
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Location: Newport, TN
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Quote:
Originally Posted by atalla View Post
Priming Control tubes ?????
Check out page 5-10
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