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Old 01-05-2015, 03:58 PM
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Ludwig II Ludwig II is offline
Motorized Bicycle Elite Member
Join Date: Jul 2012
Location: UK
Posts: 4,309
Default Re: Friction Drive In The Rain

Some of the older European FD engines used a reduction drive and a larger diameter roller to give better grip. You probably can't fit one with the engines you have though.

I have wondered whether an idler roller, down towards the road surface at the rear of the wheel, lightly pressing on the tyre would spin enough water off it to make a difference. It's just a thought.
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