I recently built a Great Planes Pt-40 kit with the greater amount of wing dihedral, or the A mode. On it's maiden flight, it rolled over and dove into the grass about 10 seconds after takeoff. The cause of the crash was a faulty control horn on the ailerons not the dihedral. When my Dad and I talked to the local hobby shop owner about the aileron problem, he told us that I should have built the kit with the lower amount of wing dihedral or because it would have been more stable and easier to control in slow flight.

I was just wondering if anyone had built and flown the kit with either the low or high dihedral wing, and how stable the plane was in flight. If either of the wing options caused trouble with basic and slow flight, please let me know.

If you were wondering, the plane is being repaired right now and the only damage was to the landing gear and firewall, both of which are easily fixable.

Thanks a lot,
Farr301