once the car wants speed ratios, the feeding conical pulley (sheave) more than the input shaft moves in the direction of the fastened pulley which subsequently shifts the A part of v-formed belt wrapped around the input pulleys toward the better cross-sectional A part of the conical enter pulleys. https://gearboxcvt64296.blogminds.com/fascination-about-gearbox-cvt-29741844