Leaning Left

[theunk]

I've had my cub for about 2 weeks now, endured some crashes while learning.. After one crash that broke the wing in two, it started leaning left after my tape fix.

So first I replaced the wing. Nope. Then I replaced the entire geabox thinking maybe the prop mount got bent. Nope. Checked CG @ 2.25, seems fine. New prop, nope.. Elevator and rudder look perfect when at 0 trim on my transmitter.

Only way I can get it to fly straight is to put the rudder trim far right, which gives the rudder a noticeable angle.

Tail looks like new still so didn't replace that.

Any ideas? I feel like I've tried everything but I'm totally new to all this..

[flydiver]

Try a R/L balance down the center line. Balance as necessary and test.

If that doesn't pan out....
Take off the landing gear, put it on something quite level and flat and sight down carefully at all angles for twisting or something out of line.
Uneven struts?
Twisted, cracked fuse?
Elevator screws loose.
Warped tail feathers?
Twist and bend things carefully looking for hidden cracks.

If you crashed it hard enough to break a wing, you certainly did other significant damage. You just haven't found it yet.

[mcom59]

Prop thrust maybe..? it happened to me, the bulkhead pulled away slightly and was allowing the prop to of-set causing a "pull".. have a look, you never know..