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Adaptive Cycling: Handcycles, Amputee Adaptation, Visual Impairment, and Other Needs Have a need for adaptive equipment to ride to compensate for a disability or loss of limb or function? This area is for discussion among those of us in the cycling world that are coming back from traumatic circumstances and tell the world, "No, you are not going to beat me down!"

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Old 09-23-11, 10:55 AM   #1
tarwets
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anyone ride with a shortened crank

I asked this quetion to punkncat on another thread but thought I woud make it its own thread and may be seen by more eyes so here is my question. Does anyone ride with a shortened crank on the prosthetic side? I know a shorter crank will relieve pressure caused by socket pinch if thats a problem but any other advantages that you've found.
I am an AKA with no quads on right leg and limited hams. I am able to apply pedal pressure although limited on the down stroke but no lift on up stroke. Left leg does most the work. A crank shortener can be purchased for about 100bucks and I plan on trying one but just wondering if anyone has actual experience or comments. Thanks
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Old 09-24-11, 08:34 AM   #2
Peter_C
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Just thought I would add a website that does custom work in case anyone is interested. I have not used these folks, but have read that others have. http://bikesmithdesign.com/Short_Cra...anks_faqs.html

I currently use 152mm cranks on both sides due to bad knee.
Hope this helps.
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Old 10-02-11, 07:21 AM   #3
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Van Ness rotationplasty here. I started out with a shortened crank due to a relatively limited range of motion. Since then I've discovered that I don't really need shorter cranks as long as the prosthesis gives me a little bit of wiggle room (though this needs to be done properly to ensure (a) the prosthesis stays on and (b) I don't get blisters/cuts/etc. -- and it may be more easier with a Van Ness than with a standard amputation).

I've tried shortened cranks since then and find them frustrating because you really lose a lot of power... but if the choice is, as it was for me in the beginning, between less power and no power, they're by far the better option!
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