New Yamaha technology enables a more compact unit than conventional CVT for commuter models

Yamaha has succeeded in the development of a continuously variable transmission (CVT) named Y.C.A.T. (Yamaha Compact robotic Transmission) that is compact abundant to be mounted on a moped type motorcycle of the 100 to 125cc class. Y.C.A.T. is a system that greatly reduces the size of the CVT units proven in use on scooter models and fits the drive belt that connects the engine drive shaft and rear wheel axle inside the engine assembly to manufacture possible an robotic transmission motorcycle

With Y.C.A.T. it has been possible to reduce the distance within the primary (engine-side) and secondary (driven-side) sheaves to about 40% of the distance on a conventional commuter CVT and shorten the belt plus to about 60% the length, thus helping to form the overall ability unit more compact. The size of the entire Y.C.A.T. unit is small ample to fit inside a crankcase virtually no larger than that on a conventional moped.

[Source] dhiram