Re: elevator troubles!!
Sounds like a CG problem to me. Trim the plane for level flight at mid-throttle and then climb into a 45 degree upline. Roll the plane inverted on that upline and observe what it does. If the plane wants to push towards the gear it is tail heavy. If it wants to go to the canopy it is nose heavy. The plane should want to stay on that 45 degree inverted on its own.
EDIT: On aerobatic planes your correct CoG almost always lines up with the wing tube. That is a safe place to start. Mark where the wing tube is at the root of the wing and use that as your CG point to start.
Another issue could be motor angle. On aerobatic planes the motor should have no up or down thrust. It should always line up with the horizontal center-line of the plane. On the same topic, there's always a little bit of right thrust needed to counteract the torque of the motor and prop spinning. That is usually anywhere from 1-2.5 degrees of right thrust. Shim the motor with small washers.
__________________
Team Great Hobbies
Team Durango Canada
Hobbico
|