RE: Difficulty trimming for yaw with a CX2.
All right... so I decided to forego sleep and take a closer look... the blades are all balanced perfectly per Solo's method, the upper disc tracking is spot on, the voltages are equal, the motor spin downs are the same. Except... the upper bearing on the outer mast. Actually, the bearing is fine, it's the black plastic holder that's not. At first, I thought it was the inner mast that was bent, since it swings around quite a bit when both rotors are going slowly, but when I stopped the upper rotor, it still ocillated quite a bit. I pulled the inner mast out and spun up the outer mast and watched the upper bearing holder go 'round and 'round. I removed everything except the head from the upper mast and spun it on a counter top and it's not bent. The outer mast isn't bent because with the bearing holder removed, it spins true. Soooo... tomorrow during lunch, I'll go pick and aluminum bearing holder up at the LHS and see what happens.