Stage6 Torque Control Clutch 107mm

Scooter Clutch
The clutch is essential for the proper functioning of a scooter's variator. It allows the engine's power to be transmitted to the rear wheel progressively and controllably.

How a Scooter Clutch Works
The clutch and clutch bell are linked in their operation. The clutch bell is fixed to the scooter's primary transmission shaft. When the engine reaches a specific RPM, the clutch shoes react to the centrifugal force generated by the clutch. This causes contact between the clutch and the bell, thus allowing the transmission of engine power to the rear wheel.

Adjusting a Scooter Clutch
As you understood from the principle of clutch operation, it is centrifugal force that allows the clutch to engage with the clutch bell. The clutch springs play an important role in this process, as they influence the engine speed at which the clutch will engage with the bell.
Technically, when the springs are soft, the clutch engages at a lower engine speed, while stiff springs delay the moment the clutch engages. It is important to find the optimal compromise depending on your engine configuration.

If you want to achieve a more precise engine setting, you can consider using an adjustable clutch that will allow you to adjust the tension of the clutch springs.