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Old 05-16-2010, 08:51 PM
5-7HEAVEN 5-7HEAVEN is offline
Motorized Bicycle Elite Member
Join Date: Aug 2008
Posts: 1,912
Default Re: Modifying Friction Drive To Accept GEBE components

To solve the major problem of replacing the belt, a spare belt will be secured around the axleshaft, ensuring that no pulleys or collars rub against it. If/when the main belt breaks, the spare is easily dropped into place and adjusted for tension.

I inquired with an online company who can fabricate custom pulleys. I might order a twin pulley which is siamesed together, using a 14-tooth and 15-tooth. To change pulley size, simply loosen the drive pulley, align the new pulley size to the belt and tighten everything up.

Voila! New gearing ratio in minutes!
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