Increase the acceleration force in the long pulley boss

CVT driving system

Acceleration of the start becomes high output by expanding the operation reach of the pulley.

For that purpose, let’s extend pulley boss.


When this is performed, V-belt on the clutch side sometimes sticks out.

I have Long pulley boss, but even if a person who doesn’t possess it includes Flat-boss washer of the 0.8mm degree, it’s OK.

If V-belt overflows, let’s shave a case and cope with it.

cutting metal the scooter drive system case

Pulley face metal cutting processing to Increasing the spline area