The guy who trained me several months ago and I were out at the field tweaking out a Great Planes P-51 I purchased from a friend. We worked for several hours trying to get it to fly straight. The problem was the planes tendency to roll right. The ailerons were at the same angle in relation to the wing tips on both sides of the plane. By the end of the day it was flying straight. We had lowered the right aileron a tad.

Problem now: Aileron rolls to the right are perfectly symmetrical, aileron rolls to the left look like a half-#$$ed snap roll. There is no mixing yet since we're just tweaking it out.

We verified the ailerons were about right because the plane doesn't have any tendencies to climb under full power. The .46 OS-FX is mounted on its side.

We're scratching our heads trying to figure out what would cause this and are looking to you experienced folks who may have seen this before to help out.

Thanks in advance.

Sounds to me as if the wing is warped from covering. Check it out with an incidence meter.

DaveB

If you haven't done so already, I would make sure the plane is balanced from side to side. Then try some more trim flights before doing anything else. Also make sure the ailerons move up and down the same amount.

All the planes I've had rolled one way nice and sort of a barrel roll the other way with the exception of my pattern plane. I always thought it was from engine torque or prop wash.

We thought it was a thrust problem too because of the side mounting of the engine. I'll work on the side/side balance and check the wing for warping prior to my next flight.

Thanks for your input!