I have two small electric sport planes. Both planes will roll faster when I apply right aileron than when I use left aileron. Anyone know the cause ? Phil

Certainly torque might cause it, but it probably isn't that noticable. It might be a setup problem, on most computer transmitters you have to adjust the left amount of throw and the right amount of throw, independently. (I learned this a hard way, I adjusted the throw on one side thinking I was lowering it and moved both horns in a notch. It did a nice left turn, but the right turn flipped it upside down about 20 feet off the ground. It was a bit of a surprise! It was also the last flight of that plane)

One reason that causes unequal throw in the ailerons is when the control horns are not mounted with the holes directly over the hinge area. Another is when the neutral position of the aileron does not correspond with a right angle between the control rod and the servo arm. It helps to first center the servo arm electrically with a live radio setup and then mount it on the servo for a right angle between the arm and the body.

If you have a computer radio, life is much easier and you can start to get lazy on your linkage setups knowing that you can program away any alignment or slop issues. Call me, "Mr. Lazy".

> Certainly torque might cause it, <

With a right hand prop wouldn't the torque reaction cause a faster roll to the left?

Yes, torque will roll it to the left. Easiest way, as Greg says, is with servo endpoints. Lazy old fart here too.