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Fitting a Handcycle

Old 06-27-20, 12:57 PM
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Fitting a Handcycle

Hey folks. I'm a long-time cycling obsessive with past experience working as a mechanic and performing fits. Nextdoor to me is a 6 year old paraplegic boy who recently received a recumbent handcycle--a loaner-- from a local organization. I've taken it upon myself to take care of any mechanical work needed and also to get him comfortable riding.

I am wondering if there are any resources on fitting such a bike. My guess is that he is on an adult cycle, and before I start adjusting, I'd like to get the basic principles of fitting a hand cycle.

Foremost on my mond is crank length. The bike has 175mm arms, which seem ridiculously long. At present, he is having to lean very far forward to complete the motion. Almost like he's towing. I can't imagine that this is biomechanically ideal. I know that, using my old shop connections, I can source some reasonably priced arms as short as 140mm, but I don't want to overshoot--undershoot, I guess in this case.
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