belt drive, maybe?

I must get good chains, I have no problems after the initial "stretch".

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If it ain't broke, and you mess with it long enough, it will be.

Belt Drives a subject near and dear to my heart. Below are some photos of the project that I have slowly been putting together over the past year. the drive train componets are from several different manufactures.

To be continued

ocscully

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Continued from above

The clutch is from MaxTorque, the large jackshaft pulley and the driven pulley on the rear hub are from Peifer Industries, the small jackshaft driver and the jackshaft parts are from Viza Motors, the rear hub is from Nashbar. The belts to drive all of these parts will be 5mm pitch 25mm wide metric timing belts from Gates.

This is my attempt to avoid the reduction gearboxs that come with the various 4-stroke kits, as well as just to do something different.

ocscully

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I am impressed.!! You are moving the right direction to a well mounted and beefier set-up. The belt is a lot (I think 5 times) wider than GEBE and that adds a lot of durability to the system. I love the use of a hub brake mount to mount the drive gear. That won't be getting loose with no resolution but a new plastic drive ring. You just need to Loctite the hardware and check tightness every now and again.

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LennyHarp of Lenny's Bikes & Things
http://lennyharp.net
The true value of a man is not judged by what he has, but rather by what he can do without.
"We are what we repeatedly do. Excellence, then, is not an action, but a habit." -- Aristotle