I found this link the other day http://www.adventureunicyclist.com/?page_id=319 it's to do with unicycles, but I think this explains the reasons for choosing certain crank lengths quite nicely
@wm.wragg started
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I found this link the other day http://www.adventureunicyclist.com/?page_id=319 it's to do with unicycles, but I think this explains the reasons for choosing certain crank lengths quite nicely