One of the four servos in my wing seems to have a mind of it's own. It is
> the right aileron servo and it is a standard size two ball bearing servo.
> If I give it input (stick movement) mostly to the endpoint and release it
> will move in the correct direction, but it appears further than my
> programmed endpoint. Perhaps to my high rate, maybe further even though
> I'm on low rates. I have swapped ports on the receiver, as well as
> disconnecting various combinations of flaps or ailerons and also
> substituted another receiver. I connected all 7 servos on the plane and
> the result is the same servo having a problem.
> Someone at the field mentioned I may have a dirty "pot" and it needs to be
> cleaned. Does anyone agree?
> If that might be correct, I know not to use just any cleaner solvent and
> there is specific cleaner solvents for servos. Is there any reasonable
> substitute maybe found around a house or shop?
> Do you think I just need to give it up and replace the servo?
> TIA
> Howard
Thanks again to all who responded. I'm sure all of your suggestions are valid and from experience. But, I finally figured out the problem and although not mentioned by anyone, it was related to some responses. I did buy a new servo and hooked it up to the receiver before removing the old one. It still had the same problem. Well, then I was sure it was receiver or radio. The radio (JR 9303) didn't cause any problems with other planes so I now connected a new receiver. I used another battery when plugging all to this receiver. Still, the same problem, sometimes. I finally realized that with the battery plugged directly in to the receiver it worked fine. But, the times I plugged this battery to the on-off switch in the plane, same problem. Simple deduction: bad switch. Actually, wasn't that simple after connecting and reconnecting things over and over again. I thought I'd share the results should it ever happan to someone else. Howard