Patent ID: 7948098

Claim:
An electric rotary starter for an engine of a radio control model, wherein the engine includes engine has an input axle for receiving the torsion, a drive device is laterally mounted to the engine for driving the input axle and at least one drive seat is rotatably mounted in the drive device and longitudinally connected to the input axle for driving the input axle, the at least one drive seat electrically connected to an spark plug that is mounted in the engine, the electric rotary starter comprising: a motor mounted therein; a drive shaft longitudinally connected to the motor and rotated by the motor, wherein the drive shaft is electrified; and a conduct tube movably sleeved on the drive shaft, wherein the conduct tube is electrified and insulated from the drive shaft; whereby, when starting the engine, the front end of the drive shaft is longitudinally inserted into the at least one drive seat such that the torsion is transmitted into the engine via the at least one drive seat and the input axle, simultaneously, the conduct tube is longitudinally moved relative to the drive shaft to make the front end of the conduct tube contract with the at least one drive seat, as a result, the conduct tube and the drive shaft form a circuit and the power from the power source is transmitted to the spark plug in the engine to make the spark plug sparkle for starting engine.