The HS81 Micro Servo has often been considered to be the primary choice for lightweight gliders and electric flight, where the size and weight of the servo is critical to successful flight. In fact many models call specifically for a HS81, and are designed around this standard micro servo.
Torque: 2.6 Kg/cm
Speed: 0.11 sec/60deg
Dimensions: 29.8 x 29.6 x 12mm
Weight: 16.6g