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Old May 27th 18, 01:56 PM posted to rec.aviation.soaring
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Default Aileron "tuning" or "trimming"

On Sunday, May 27, 2018 at 8:03:36 AM UTC-4, wrote:
Hi all,

I have a PW-5 that requires side pressure on the stick at all times to correct a tendency to bank to the right. More pronounced at higher speeds, of course. Wing tape helps a little but doesn't eliminate it. But there is a visible tiny difference in aileron position from one side to the other when the stick is neutral.

Planning to pull out the manual and figure out how to make length adjustments to the control rods, but is there any counterintuitive thing I should know before attempting to fine-tune?

Cheers,
Chris


A few things to start with:
First-Before doing anything look in the maintenance manual to see if there is any information on how ailerons should be rigged.
Next, align one aileron in "neutral". Then check to see if the other is in neutral. Stick position does not matter.
If they do, fly the ship and see if it flies straight. Again stick position does not matter for this test.
If it flies straight, then adjustments to the control mechanism may be made to get stick centered.
If they do not line up, the mechanism may need adjustment to make them line up.
If it does not fly straight with ailerons even and in neutral the problem likely is in the rigging of the wings. There may be a way to correct this. See the manual.
All this should be done with the help of your mechanic.
Good luck
UH