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“Capricorn Cyclo-Works” apparently came and went without my noticing, which is too bad, as their “Involution” epicyclic-geared motorcycle wheel is one of the cooler doo-dads I’ve ever seen. The gear train is non-load-bearing and free-spinning so that, even if it jams completely, the wheel will continue to function as normal. The vid below shows it in motion.

Sean Michael Ragan

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I am a long-time contributor to MAKE magazine and makezine.com. My work has also appeared in ReadyMade, c’t – Magazin für Computertechnik, and The Wall Street Journal.


  • mckgyver

    Nice, but would be so much cooler if the planetary gears were the final reduction drive for the rear wheel.

  • Jay

    …as if motorcycling wasn’t dangerous enough!

  • major nutts

    thats awsome , now if they would put brakes on it…….?

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