Looking for suggestions on aileron throws
 

Hi group,

Building a Kadet Senior kit, and I"m working on installing ailerons. decided to go with strip style. Have read sometime awhile back to go 1/8 th cord and 12% wing area. Adhered to 1/8 cord, but on doing the install to stay within rib spans, ended up with 11.25 % wing area. With it being that close, decided not to get into it any deeper. Wondering if anybody would have some suggestions for setting the throws. Dehedral has been cut 50% which ends up to be 1.5" / side. I'll add a pic to show what I got so far. The hole in the tip was a bit of hanger damage, that happened while moving stuff around for other projects during my lapse on construction, cut out and getting fixed.

thanks

flynte

RE: Looking for suggestions on aileron throws
 

I had a Kadet Senorita (the 25 sized Kadet) that I bashed, took all dihedral out, cut in 1/3 cord ailerons, and shoe horned a YS63 up front. I called it Kadet Can Do 3D 2. I won't bother describing flight performace in detail, but I'm convinced it went straight up as fast as it did in level flight.

Anyway, my ailerons were larger than yours (1/3 chord), and I had about 30 degrees of throw. But I'd think anything around 10-15 degrees would be enough for normal flight with your 1/8 chord ailerons.

If you are sensitive to yaw coupling, you will want to setup a aileron differential or a rudder mix to fix. My Kadet had a pretty strong adverse yaw from ailerons. I fixed mine with a rudder mix for axial aileron only rolls. I can't remember exactly, but I think the rudder mix was pretty steep, like around 30%-40%.

Cheers.

RE: Looking for suggestions on aileron throws
 

I would think about 3/8ths to 1/2 inch throw to be a good, safe place to start.

RE: Looking for suggestions on aileron throws
 

Agree with Mode some what, 3/8" both up and down should work well and give you a good roll rate without being too touchy. I think 1/2" may be a bit too much until you get used to the plane. [8D]

RE: Looking for suggestions on aileron throws
 

Thanks all for the info. I'll keep them low to start as suggested, 3/8". Got a futaba 6ex so can dial up easily later if needed.

flynte

RE: Looking for suggestions on aileron throws
 

flynte,

Read what JohnW wrote about his having adverse yaw. This is common with flat bottomed wings. If single servo, set the servo horn so you have almost no down and about 3/8" up. This is done by not having the horn straight across, but use the two adjacent arms of a 4-arm horn. They will be to the front of the wing on a high wing. This will eliminate the adverse yaw and give you response to aileron at very low speeds. If two servos, accomplish the same, or computerize it.

Of course, with a slow, if not overpowered, plane it is best to learn how to co-ordinate turns with rudder.

If you always fly very fast, none of that matters.

Ken, AMA 19352