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Old 06-19-2010, 01:58 AM
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discontinuuity discontinuuity is offline
Motorized Bicycle Senior Member
Join Date: May 2010
Location: Colorado, USA
Posts: 92
Default Re: Propane conversion

I tried this on my lawnmower awhile ago. The carb was clogged up and I didn't want to tear it apart to clean out the jet again. So I found about 1 foot of vinyl tubing and put one end on a blowtorch, and the other into a hole I drilled into the intake box. It started right up on the first pull and ran for about 15 minutes at a time before the propane bottle iced up and the flow petered out.

This was a roughly 100cc engine, so I imagine a 50cc bike engine would run better without icing up the bottle. Although one go-kart mechanic I talked to said that propane burns hotter and can overheat your engine, so watch out.
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