I'm working on a land based rowing motion vehicle 100% mechanical in nature with no electronic assistance.
It will have 3-4 wheels and be powered by a person's arms. Steering will be controlled by the feet via pedal (like a plane), and braking has yet to be thought out, aside from hands slowing or stopping the rowing motion.
The initial design will not be geared until the standard body and frame have been developed. I will attempt to upload sketches before November 1st. I will open a discussion thread in the forum for input and suggestions for development. To reduce initial costs I will be using PVC to construct the frame.
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