Tag Archives: MOBI

“L”, “Z”, or otherwise non-straight cranks

Thanks to the wonderful Bicycle Museum of Bad Ideas for cataloging all the versions of non-straight cranks from at least 1931 through today. Notable entries include:

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As MOBI correctly points out

A moment’s thought shows a straight crank and an L crank always have the same relation between pedals, chain, and bottom bracket. Thus, there is no advantage to L cranks. And an L crank always has more material than a straight crank, so is always at a disadvantage for weight, strength, stiffness, and/or cost.

This is pretty good confirmation of the line about the rate at which suckers are born, no matter who said it.