The pulley technique inside of a CVT includes two pulleys, a single connected to the engine and the other towards the transmission. The 2 pulleys are linked by a belt or chain. The pulleys are formed like cones, as well as their diameters could be modified to change the gear https://gearboxcvt52838.elbloglibre.com/34149304/the-basic-principles-of-gearbox-cvt