How CVTs Work | HowStuffWorks
Vbelts are preferred if the belt is made of rubber. Vbelts get their name from the fact that the belts bear a Vshaped cross section, which increases the frictional grip of the belt. When the two cones of the pulley are far apart (when the diameter increases), the belt rides lower in the groove, and the radius of the belt loop going around the pulley gets smaller. When the cones are close ...