A foldable unicycle attachable to a wheelchair to form a hand driven tricycle. The unicycle has upper and lower drive train frames. The means for attaching the unicycle to a wheelchair includes a positioning stand that holds the unicycle and its attachment means in a position adapted to receive and engage hitch means attached to the wheelchair frame. The positioning stand of the unicycle and the front castor wheels of the wheelchair are lifted off the ground during engagement of the unicycle attachment means to the hitch means of the wheelchair. The upper drive train frame includes means to allow it to be folded downwardly into a position adjacent the outer face of the lower drive train frame, and the unicycle attachment means includes means to allow it to be folded downwardly into a position adjacent the inner face of the lower drive train frame.
There's also this unicycling wheelchair, brainchild of Max Dingemans. He set it up with a couple of Fireball ultra-wides, the better to replicate a uni experience while temporarily forbidden from riding.
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