RC helicopters with tail motor-drive

 

— tail rotor, rotated by its own small motor. This option is simpler and cheaper than the shaft, but inferior to it in terms of control accuracy. Most of all, motors are popular among coaxial models, where the tail rotor is responsible for tilting back and forth and must be turned on periodically; among the "classics" tail rotors with a motor are rare and mainly in low-cost models.