BobCat Elevators
Hey Todd;
I do not want to insult you, but when you turn on your plane you must NOT move the plane for a few seconds. That time allows the gyro to find center. If you turn the plane on and move the plane or bump it in any minute way, your trim will be changed every time. This MAY be part of your trim problem. (Some Peizo gyros drift due to temp and loose mounting too)
My Bobct has a dutch roll on take off. Right after the gear is up, it flys great. On windy days, I need almost 100% gyro gain to stabalise landings.
Also, I had the same problem on my elevators servos NOT tracking well, it showed up in loops and pull ups. I ended up with gluing a half an inch tab to the bottom of the faster elevator (one elevator side only) at the trailing edge. That allowed true tracking when moving up.