Planetary gear hub for unicycle

It looks like a modified 7 Speed Sram hub which Unifrank modiefied to build up a prototype of a unicycle. He has some great CAD animations showing the planetary gears roooootating.




  1. Clancy

    Just ran across your site and wanted to let you know a new possible Kickback hub coming out. I can’t find much info on it except that Schwinn will be offering it on their 2008 Cruiser DX bikes.

    If you find out something please post/email more info.


  2. james herrera

    Hi,how can modify a sram 7 speed hub for a unicycle? is there any conversion kits available?

  3. veary good knowlged for maintenance fitter

  4. good knowlged for thanks maintenance

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