Added Ailerons. What Should the Throw Be???
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Added Ailerons. What Should the Throw Be???
I just finished an VERY OLD Pietenpol kit from Balsa USA. It looks like a 40 size plane, but the instructions called for a .19-.26 2-stroke. Of couse I had to put a 4-stroke 40S in it.Theplane was designed without ailerons, but I decided to add them anyway. They're barn door style typical of what you would see on a Cub. My question is how muchup/downthrow should there be?
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RE: Added Ailerons. What Should the Throw Be???
If it is a flat bottom wing or semi-semetrical you will need more throw up than down... 3/8" down and 1/2" up would be my starting point.
dan
dan
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RE: Added Ailerons. What Should the Throw Be???
I would say that adverse yaw is important in high apsect ratios like gliders.
I always use 10° deflections for all surfaces and works alright. How I mesasure it? I made a template in balsa wood for this process.
I also should say use 5° for very fast planes, 10° for sport flying and 15-20° for 3D flying.
I always use 10° deflections for all surfaces and works alright. How I mesasure it? I made a template in balsa wood for this process.
I also should say use 5° for very fast planes, 10° for sport flying and 15-20° for 3D flying.
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RE: Added Ailerons. What Should the Throw Be???
The original design had not ailerons IMHO I would go with the lowest rate maybe 1/4" and try it like that.
The flying type of the original was intended to use the rudder, if you go with a higher rate in ailerons maybe the plane will suddenly come down, then in my thoughts I would reduce the rate and try the turns with a little help of the rudder.
Good luck.
The flying type of the original was intended to use the rudder, if you go with a higher rate in ailerons maybe the plane will suddenly come down, then in my thoughts I would reduce the rate and try the turns with a little help of the rudder.
Good luck.
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RE: Added Ailerons. What Should the Throw Be???
ORIGINAL: R-Duhb
I just finished an VERY OLD Pietenpol kit from Balsa USA. It looks like a 40 size plane, but the instructions called for a .19-.26 2-stroke. Of couse I had to put a 4-stroke 40S in it. The plane was designed without ailerons, but I decided to add them anyway. They're barn door style typical of what you would see on a Cub. My question is how much up/down throw should there be?
I just finished an VERY OLD Pietenpol kit from Balsa USA. It looks like a 40 size plane, but the instructions called for a .19-.26 2-stroke. Of couse I had to put a 4-stroke 40S in it. The plane was designed without ailerons, but I decided to add them anyway. They're barn door style typical of what you would see on a Cub. My question is how much up/down throw should there be?
As small as your ailerons are, I'd try to get as much throw as I could. Also, set them up with differential so that the upward movement is twice as great as the downward movement. Otherwise, your model will roll one way, but yaw the opposite. I've seen models using lots of control throw where the model continues to fly straight ahead, while twisting in the opposite direction of the turn. You have to be there. Don't forget how to use your rudder thumb if the ailerons prove too ineffective.
Ed Cregger