So I flew my Oriental Plus tonight for the first time in awhile, and there are some major trim issues with it, that are almost hard to describe.
First, I tweaked up the prop to 4.25" pitch from slightly below 4 where it was. It did immediately feel more positive than it did when I was flying it earlier this year at around the same RPM. I started flying the pattern and there was a lot i noticed that I didn't like about the plane.
First, it yaws nose out on outside corners, like the outside square, and affects the air speed and line tension of the maneuver.
2nd, outside maneuvers got soft. This is the easiest thing to fix since we did already figure out the wing was slightly up.
3rd, this one is probably the hardest to describe. On my outside square when I make the turn to go inverted, it feels like I gained about a pound of nose weight and it won't turn. The next 3 corners are just fine, it's just that turn to go inverted that I didn't like at all.
4th, When I turn from inside to outside on the square 8, it gets soft, but that probably had to do with the fact that the wing was slightly up.
I'm sure the wing not being level would cure half the issues there, but not the yawing, and probably not that turn to inverted on the outside square, or the yawing.
I have 63ft lines from the handle to the center of the plane. I do have rudder offset that I could take out (now that I think about it, taking that rudder offset out, might help the yawing), and the leadouts are about 1 1/2" back from the CG.
What do you guys think that could help cure some of this?