HowStuffWorks The variable-diameter pulleys are the heart of a CVT. Each individual pulley is product of two twenty-degree cones experiencing each other. A belt rides inside the groove in between The 2 cones. Dutch carmaker DAF popularised the CVT with its choice of metropolis automobiles while in the sixties https://zionwwutp.blazingblog.com/32412417/not-known-details-about-gearbox-cvt