I really like the idea of the Hub-ee wheels. On a more general application though, how about a very S-L-O-W version, something to drive a gear to get high torque? What I have in mind is not running little cars around, but actually controlling the position of something. (i.e. Rack and pinion for linear positioning, or just gear for rotational positioning.) Gearing down may also increasing the resolution, if the encoder is are on the motor shaft. Just some thoughts……
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