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Old 01-05-2010, 09:15 AM
mifletz mifletz is offline
Motorized Bicycle Senior Member
Join Date: Aug 2009
Location: israel
Posts: 84
Default Re: Mechanical efficiency of chain drive vs roller drive

I've just taken my Robin engine off its roller drive mount and tried it on a chaindrive bicycle, and there's definitely 15-20% more power at the wheel, which makes all the difference going up steep hills. And no slip in the wet. I'm now convinced about having to change to chain.

The customs tax in Israel being 100% which I'm not prepared to pay for a chainkit shipped from the USA, so the bike shop here are going to fabricate me a mount, them all being professional metal workers who have spent their lives welding Merkava tanks!
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