Hi Everyone,

As some already know we [EZM] have been looking into rear belt drive for some time, but for different reasons than most. During my extensive research many advantages & dis-advantages of belt drive have surfaced. I have learned that many experts don't have a clue about what works and what doesn't.

Our new 4 stroke kit is supplied with a standard ratio of 16.03 X 1, whereas most on the market are approx 23 X 1. A very large portion of the power is wasted in the gear boxes, and must be geared with such high numbers to overcome the exessive drag.

The Whizzer [original] was a ratio of 9.148616914893617021276595 X 1. The flywheel pulley was 2.5", the clutch primary pulley was 5", the secondary clutch drive pulley was 3.5" and the belt sheave was 15". Quick math would indicate a ratio of 8.57142857142857 X 1, however the belt seating areas of the pulleys must be considered. The Whizzer has a clutch pulley that is mounted on the cluth arm, and the arm rotates to loosen or tighten the belts. The belts are kept tight via a spring.



Have fun,
Quenton