Continuous Variable Transmission; V-Belt; Drive Pulley; Driven Pulley - TGB Hornet 50 Service Manual

3-3-2 Continuous Variable Transmission

I . V-Belt :
Made of rubber fiber, resistant
to heat, pressure and abrasion.
The inner side of the Belt is
toothed.

2 . Drive Pulley :

A. Due to the increasing
revolution speed of Engine,
the Roller in the Movable
Drive Face is expanded by
the centrifugal force to
move the Movable Drive Face
and squeeze and press V-Belt
to enlarge its turning radius.
B. Fan is installed on the
exterior of Fixed Drive Face
to moderate the rise of
temperature in the Clutch-Cover.

3 . Driven Pulley :

A. Because the revolving radius
of V-Belt at the Drive End is
enlarged, the Face Comp Movable
Drive is squeezed out by the
V-Belt at the Driven End to
shorten the revolving radius.
B. There is a Torque Cam on the
Movable Drive Face.
C.Torque Cam is loaded from
outside. When the outside load
is higher than the engine's
output, the Pulley of fixed
shaft and Belt slip to make
the Movable Drive Face move
along the inner side of Cam and
compensate to increase to high
torque (toward to low speed)
and make the engine maintain
smooth running with original
revolution.
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