These four servos were pulled from a working aircraft. They have all been tested and function properly. These servos are popular for helicopter tail rotor and aerobatic plane rudder control. S9254 Digital Helicopter Tail Rotor Servo. High Torque Coreless Motor Digital Servo for Gyro (01102168-1). 0.06 sec/60°at 4.8V. 3.4 kgf/cm at 4.8V. 40 mm x […]