HK 450 pro question/help
I picked a hk 450 pro recently, torque tube gears were stripped, now replaced, made adj. spooled up approx 10 - 15 sec, outrunner motor was quite hot, and jittering when attempting to spool again, replaced ESC today, seems to have same issue.
Also, when spinning main rotor by hand, feels like a " brake " effect, if I disconnect the motor leads, this does not happen, is this normal ???
Thanx
Bob