Okay, I admit it, Derek has shamed me into starting on the Pawnee again.
When I flew my Crosswind two the first time, I scared the bejeebers out of myself as well as those watching. When I flipped it inverted the first time the outboard wing was up a good foot!!!
I climbed high and tucked it under, flew out the tank, (I always short tank on the first few flights for trim issues) and tried to tweek the flaps. No-go, the purchasd horn was simply too hard!
I had gotten lazy and decided to not build my own horns for that ship. Never again. I use drill rod for my horns, it's much more "tweekable" than music wire. Never had a failure in over twenty years of doing that.
I brought the ship home and measured, sighted, measured again, and failed to find the reason for the abnormality! Well, maybe it wasn't REALLY a foot high, but it looked like it to a scared pilot.
I knew there was no answer but to work on the flaps, and the thing was way too much to solve with a wing wart. I tried this solution in the pictures and it worked. Now, before you tell me that much misalignment can't be solved, may I share with you the several 500+ scores I've received with this airplane after getting it trimmed. It flies great now.
I cut the end of the outboard flap off, made a ply box like you see in the pictures and installed it. I started adjusting it and ended up with an airplane that both Allen Goff and Pete Bergstrom have flown and liked. 'Nuff said.
The first picture shows the interior design and the second shows the unit on the flap horn. I left the screws way too long so you can see how they are installed. Once the ship is trimmed, I'll cut them down to a much smaller extension.
Yes, it looks ugly, but I don't care, it's adjustable! I am making these flaps so narrow in chord that I don't want to risk tweeking, so am putting this in right at the start. No one has mentioned the unit on my Crosswind, so it must not look all that huge and gross. (Or maybe stunt fliers are just too kind to mention it?)