DIY Friction Drive Experiment

What size roller were you using? I an using a 3.5" knurled roller with a belt reduction with a 99cc HF engine and I havent noticed any inordinate tire wear or tire dust in just under 600 miles on this build.
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I think the larger contact area of a large roller dramaticly increases fricton and efficency, I am getting 55-60 miles per 40 oz volume fill up of the peanut tank.

I have to go just a little easy on throttle advance in first gear but can't make it slip at all in second gear.

A chain or belt to the wheel is definatly a more positive and efficent drive though. I like the low maintenance and simplicity of my large roller FD.

Please 'scuse me for tecno blabbing in your thread :~)

Here's the pic for the invalid pic file from my previous post.

I can hardly wait for that maiden voyage!

lowracer said:

http://motorbicycling.com/f4/pocket-bike-engine-project-3-v-34531.html
I started this new thread to show this bike built up using V-belt drive on a rear rack. I didnt like friction drive...
-Lowracer-

Click to expand...

Yeah, sorry, I didn't mean to jack your thread. Sometimes my judgement wanes when it's late and I've had a few LOL.

Fricton drive is the least efficent and least reliable method of guranteeing power to the wheel in all type road conditons.

I realy like belt drive idea. No hassle with messy and noisy chains.