-
is it possible to ride a bike with different length cranks? Why have I never heard of anyone doing this?
Yes, anybody could do it. Some people do it by accident with small differences, due to inattention while assembling bikes from their parts bin.
Because you haven't been paying attention to paracycling, where uneven cranks are sometimes used to provide a balanced ride for an athlete with profoundly unbalanced legs
Question: is it possible to ride a bike with different length cranks? Why have I never heard of anyone doing this?