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Aileron Alignment

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docclv(at)windstream.net
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Posted: Tue Jan 17, 2023 3:38 pm Post subject: Aileron Alignment

Igor:  I don't have pictures showing the Aileron hinges but it is quite 

easy and simple to do.  You need to measure the discrepancy in height of 

the Aileron with reference to the top of the wing by laying a long 

straight edge along the top of the wing down over trailing edge of the 

Aileron.  You may need to hold the straight just outboard or inboard 

along the outboard or inboard edge of the Aileron IF the Aileron is 

higher than the straight edge You will see that the the top of the wing 

is flat and not rounded as it comes down to the Aileron.  Hold the 

Aileron parallel to the straight edge and measure the difference in 

height which could be above the straight edge or below the straight 

edge.  This will tell you how much to raise or lower each hinge of the 

Aileron.  Make note of this.

   Remove the Aileron and Rivet a 3/16" STEEL fender washer (small hole 

same diameter as the #10 bolts and a big outside diameter) to the OUT 

SIDE of each hinge arm using 2 #3 rivets with the 3/16" washer center 

hole moved either up or down from the original hinge holes the amount 

each end of the Aileron was above or below the wing surface as noted above.

   The hinge arms are made of STEEL not ALUMINUM.  Don't use a piece of 

ALUMINUM.  Its hole will wear out with time.

   Then using the washer hole as a guide drill through each hinge arm.  

You will now have the Aileron moved up or down in the hinge arms to make 

the Aileron top surface match the top surface of the wing.  This is 

proper Aileron alignment to assure minimal drag and avoid a "Heavy Wing"

   Reinstall the Aileron using the original 3/16" bolts (hinge pins) and 

check the other clearances and measurements I noted in my "Wing Mounting 

and Rigging" and Vans instructions.  You will have a nice flying FAST 

airplane.

   Note:  You will have to clamp the washers to the hinge arms SECURELY 

so they can't possible move when you drill the rivet holes to rivet the 

washers on the hinge arms.  I would recommend a couple of small Vise 

Grip pliers and an extra hand or Vise to hold things. Good Luck Doc 

N123CV and N784DC

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supik

Joined: 22 Aug 2018
Posts: 70

Posted: Tue Jan 24, 2023 1:04 pm Post subject: Re: Aileron Alignment

Thank you Doc, I'll have a look on that.. anyway, pls post pics when you'll be at your airplane.

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_________________
Igor

RV10 in progress

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