But the bigger problems displayed their ugly faces when I removed the handcycle from the trainer and attempted to get on it and move it forward. The front wheel easily "flopped" to one side. This is not an unknown problem with handcycles. Since a handcycle's front fork usually has an integrated crank, bracket and steering, the fork can have much more severe problems than those encounter by the typical bike. I found it quickly: A flopping fork in which the bike's front wheel attempts to lay itself flat to the ground...
I decided upon two courses of action to relieve this problem: (1) Adding a self-centering steering mechanism and (2) adding "stops" on the steer tube holder that only allow the fork to turn a maximum number of degrees before confronting the "stops". Therefore, the maximum flop can be controlled by the size of the "stops".
Both the stops (left and right) and the self-centering mechanism are in place. I have some cosmetic work to do on the frame after the changes -- but those are much more minor as compared to the additions. Here are the pictures:
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BTW, this carbon fiber handcycle is about 1 mph faster on a trainer over a two hour workout than my aluminum one. There is so little give in the uni-body construction that I am NOT expending my energy flexing the seat and frame. The output goes directly to the wheel. My guess is that the wheel is receiving about 15-18 watts more of output.
ReplyDeleteI thought the post was about an actual road test, like for your driving license.
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