different sizes of crankarms

If you use the shorter arm on the shorter leg, should be fine...

fauxpas said:

If you use the shorter arm on the shorter leg, should be fine...

A better solution might be to get an orthotic shim stuck underneath the cleat of the shorter leg - 2cm is a pretty big gap, and I don't think that a 2.5mm difference in length (5mm diameter) will feel very comfortable to ride.

The force you'll need to put out with your shorter leg wil be slightly higher as well, which could lead to very unbalanced pedalling.

HTH,

n

vuce said:

I was wondering

it's a less than perfect soltution, because, while the shorter crank would be easier to reach at the bottom of the stroke, it would be further away at the top of the stroke. In other words, while the 2cm discrepancy might be rectified through the bottom of the pedal stroke, it would be doubled to (approx) a 4cm discrepancy through the top

....but, I guess having a lower pedal through the top of the pedal circle.......I'm not sure

Maybe someone needs to invent an electronically or mechanically articulated sliding shortening/lengthening crankarm to compensate through all sectors of the pedal stroke 😄

Could go all the way to 'suspension crankarms' patent pending

I've used an extra insole in the shoe with the shorter leg.

I seem to recall reading somewhere the ever popular "it depends" in answer to a similar question. Perhaps it was here or at BikeForums.net

You can run different length cranks, and some do.

I wouldn't worry about the power issue... it isn't important to exert more with the shorter leg unless your primary concern is that your acceleration is extremely smooth. Some people ride missing one leg, and I suspect they get very little torque from the leg that isn't there... 😉

But, back to my point. I forget the specifics, but I read somewhere that there is a difference in how to deal with the length issue depending on whether the leg is shorter above or below the knee. The claim was that one condition lends itself to a shim, and the other to a shorter crank.

Perhaps you should do a search, or seek the guidance of a doctor or other medical professional...

There is a solution somewhere... You can find a way to be comfortable on your ride! 😄

Good luck!