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- Cycling Equipment
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- 15 January 2008
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- 15 January 2008
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#1
Do coarse inch-pitch sprockets fail to give you the precise gear ratio
that you want on your single-speed?
The solution is to stuff 8 gears and 2 chains inside a pair of hollow
crank arms:
http://www.google.com/patents?id=KmJHAAAAEBAJ&pg=PP1&dq=627086
The design also eliminates unwanted ankling--those platforms stay
level, if everything goes right.
The dip in the back of the pedal platform accomodates the heel of the
rider's shoe.
Cheers,
Carl Fogel
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