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Old 05-27-2008 | 05:35 PM
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Top_Gunn
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From: Granger, IN
Default RE: Sig Kadet Senior Aileron modification

I am building the Kadet Sr. as my first kit. My plan is to build two wings. One with out ailerons as I have never flown a 3 channel plane. I plan on acquiring a wing kit and bashing barn-door ailerons and maybe flaps.

Dos any one have drawings for a bash like this?
No drawings, but you don't really need them. Cut new dihedral braces to reduce the dihedral by quite a bit. I made my ailerons about 16" X 5 1/2" each and glued a balsa stick (maybe 3/8" square?) behind the outer portion of each upper rear spar to make something to hinge them to (at the top of the ailerons). That puts the trailing edge of the upper spar maybe 3/8 or 1/2" (I forget which) aft of the TE of the bottom spar, which creates room for the ailerons to drop. I used the back part of the outer 5 or 6 ribs as aileron ribs (and had to cut a couple extra for the end pieces). Just make a 1/8" sheet balsa bottom and front panel for each aileron, then cut off 1/8" from each rib and glue them in place on the bottom panel. I mounted a servo in each wing, which is a lot easier than bellcranks and the like. I also sheeted the bottom center section so I could put glass tape all the way around the wing; perhaps not really necessary. I didn't add flaps, but now I kind of wish I had. Not that a plane this slow needs them. (I also made it a bolt-on wing, but that's just mehate those greasy rubber bands.)

You'll need a lot of throw, and a lot of differential probably wouldn't hurt either. Good luck with the project. I'd bet that once you've tried both wings you'll stick with the one with the ailerons.