E-TON Beamer Manuel de service télécharger pdf (Page 31)

Beamer Rev-2.0.2 Page 31 of 55 11/21/2005

7.4 AUTOMATIC CONTINUOUS

VARIABLE TRANSMISSION

The transmission is a combination of an automatic

centrifugal clutch and a V-belt continuous variable

transmission, which can change the transmission ratio

automatically.

When the engine speed increases, the drive pulley

will push the belt by centrifugal force from the six

rollers.

Then, the pitch circle of belt in the drive pulley will

be larger.

The belt at the drive pulley is forced to move to the

center of the shaft, and then the radius of pitch circle

is decreased.

The transmission ratio is therefore altered by the

alteration of pitch circle's radius.

(In the drawing, "H" means high speed; "L" means

low speed)

7.5 CONTINUOUS VARIABLE

TRANSMISSION

V-Belt

The belt is made of rubber fiber. It is resistant to heat,

pressure, and abrasion. The inner side of the belt is toothed.

Drive Pulley

Due to increasing engine speed, the rollers push the

movable drive face by centrifugal force. Then, the

belt is pressed and enlarges its turning radius. The

aluminum fan is installed on the exterior of the fixed

drive face. It can reduce the belt temperature.

Driven Pulley

Because the revolving radius of the 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.

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E-TON Beamer Manuel de service Page 31