I've just looked at all of those
They are all solutions to motorising pedal transport, but none of them use this method (well perhaps the evelo ominwheel, that looks to be similar, but I can't see the internals)?
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DinivanX Has stinging piss after drinking Pact Coffee, Fri 27 Nov 2015, 14:06,
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The rubbee and the centinel both drive the wheel
His drives the rim, they drive the tyre. Potato potato
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Captain Placid 24/7 ball gags, brownie mix and clown porn, Fri 27 Nov 2015, 14:32,
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