#2429: SprocketRocket

I found this film, about a project to build a fast, fixed-gear bicycle, inspiring.

Today’s invention is to replace the chain drive with an extra gear (orange).


Although there is only a percent or two difference in efficiency between chain and gear drive, that might be very significant when a record is being attempted.

The gears, which would also be lighter than the chain, would need to be kept well-lubricated, of course.

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