Two pinions with a different number of teeth are tightly screwed onto the clutch bell. The two main pinions on the centrifugal clutch are connected to each other

via a one-way bearing. The shift point depends on the speed.

In the first rate of speed the engine speed is transmitted from the small pinion on the clutch bell onto the bigger toothed wheel on the drive section, the toothed

wheel for the second rate of speed runs idle. At high speeds the centrifugal force causes the lever of the centrifugal clutch to be pulled outward towards a spring

resistance and the attachment on the toothed wheel grips into the second rate of speed. The engine speed is now transmitted via the larger pinion of the clutch

bell to the smaller toothed wheel in the drive section, the toothed wheel in the first rate of speed is running via the one-way bearing. The shift point of the two-

speed transmission can be adjusted.

Setting the Switching Moment on the 2-Gear Drive

The spring resistance of the centrifugal clutch, and with it the switch point, can be

adjusted with a headless screw.

Put down the model so that the wheels can turn freely.

Turn the main pinions on the two-speed transmission until the clearance in the cover

of the two-speed transmission is visible. You can access the headless screw from the

left.

Turning in the screw: The spring pre-tension is increased.

Higher revolutions are needed so that the attachment has contact. The transmission

switches later.

Unscrewing the screw: The spring pre-tension is lowered.