Multiball Disc Variable Speed Drive

Abstract

The primary function of a transmission system is to transmit mechanical power from a power source to some form of
useful power. Since the invention of the internal combustion engine in 1769, it has been the goal of transmission
designers to develop more efficient methods of coupling the output of an engine to a load while allowing the engine
to operate in its most efficient according to the need, that is the vehicle requires less power while running on the
plane road during which the efficiency is higher. A continuously variable transmission is a type of transmission,
however, that allows a variable speed or torque ratio change within a finite range, thereby allowing the engine to
continuously operate in its most efficient or highest performance range .While the transmission provides a
continuously variable output to the vehicle at the all load conditions. The development of modern variable
transmission drive has generally focused on frictional driven devices, such as those commonly used in off-road
recreational vehicles and recently in some automobiles. While these devices allow for the selection of a continuous
range of transmission ratios