ORIGINAL: dwextra
I have a 2x2 that I put together this summer. It's a nice flying airplane however I am having some tracking issues in knife flight, it pulls to the belly. Invert flight is nice, all most hands off. I set it up with 3 degrees right and 1 degree up thrust. running a DA50 22X10.
wing and stab are at zero incidence. I added a rudder elevator mix to help correct the tracking in knife edge but I would really like to know how to adjust the plane so it will track straight with out any mixes. I'm looking for help or suggestions.
Dave
Dave
Mine is exactly the same, the basic F3A ' trim charts' states -
Fly model on normal pass, roll to knife edge, left and right, use rudder to hold model level
A. Model does not change pitch
B. Model pitches to canopy
C. Model pitches to belly
A. No adjustment needed
B. Either move CG aft; or increase wing incidence; or mix down elevator with rudder
C. Reverse of B
So, you adjust one thing, and it will affect something else..!!! bit of a 'two edge' situation.
The only model I have flown that did not have any coupling issue's was a Yak, absolutey no elev inputs required in KE, except for steering it and cross wind..! The Yak setup was very close to a zero/zero/zero ( everything virtually on the thrust line..)
Tony