sick idea

I like the idea.....since my involvement with these motorized bikes I find myself looking at things in a different light too!

well a piwee one would be perfect my friends pocketbike has an expansion chamber about the sixe of a baseball bat.
It certainly would be a lot cheaper than buying an expansion chamber from some cycle shop and fitting it. You could cut & weld it up to size. The inside diameter has to be the right size for the displacement, it's a mathematical equation.

I like this idea!
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