How to control the throttle of the model methanol engine, how to control the engine speed with the remote controller and how to control the steering gear.

The carburetor of the model airplane engine has a rocker that can be pulled out or turned. This rocker is connected with the air door, and the engine is controlled by pulling the rocker through the steering gear.

The air door is the entrance where oil and air mix into the crankcase, and there is a fine nozzle inside. When the throttle is wide open, more air and oil will enter, and the power of the engine will increase, otherwise it will decrease.

The remote controller sends out a radio signal, which is received by the receiver installed on the plane, and then the receiver directly transmits the signal and electric energy to the steering gear to drive the steering gear to operate.

In this way, the engine can be operated remotely.

Generally, the engine speed is unknown, but Japan's jr and South Korea's hitec have developed two-way communication systems, and the receiver can also send signals and transmit data to the transmitter through the speed of the photosensitive induction propeller.