Broken cranks.

Jul 16, 2019
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America's Friendly Hat
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Oh, that answers the question I asked on the other thread where you posted those busted arms. All the research I've done on that bike indicated that the Mach 1 Expert was a junior model. Did you ever get a crank measurement on them? If the arms are around 145mm, c to c, they're kid cranks
 
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Feb 26, 2017
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Throw off the shackles of symmetry! It might work well if one leg is shorter or weaker than the other. I'm just getting over an Achilles tendon injury and I've been pedaling lopsided anyway.
 
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