15″ × 12″ Compact Sliding Roller Weight

Description

Traditionally, the gear ratio in scooter CVTs is changed by the in-and-out rolling movement of the roller weights. With the innovative Dr. Pulley sliding roller weights, the roller weights “slide” inward and outward in the Movable Drive Pulley (MDF) to change/extend the gear ratio.
Dr. Pulley sliding roller weights provide the following advantages over traditional “rolling” roller weights:

U.S. patent no. 7276004.

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