Hang on what the hell is a Schlumpf?!!

A Schlumpf is an internally geared planetary drive hub made by hand by the genius at Schlumpf Innovations. No it doesn’t free wheel and yes some unicycles have gears.

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It has a shifting shaft running through the axle with a shift knob on each end where the crank bolt would normally be. To shift gears you simply click the shift button with your heal or ankle during the pedal stroke.

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The gearing is 1-1 or 1-1.5 in second gear which would turn a 26″ unicycle into a virtual 39er.

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