by Greg
(North Carolina)
Motor starts and idles fine. Takes off, planes out, and not long after a buzzer goes off in the controller and the motor goes into a shaking mess. Never gets hot. Ive cleaned water system thoroughly and replaced water pump. Also motor never cuts off and will pick back up to about 4,000 rpms without moving throttle but again becomes a shaking mess with a quick buzzer and drops rpms then buzzer quiets and planes back out again.