Schlumpf High Speed Drive (HSD) presented by Utah Trikes

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Uploaded by on Nov 12, 2011

The Schlumpf High Speed Drive is one of our favorite pieces of bicycle engineering. This drive is compatible with any rear gearing system and features a whopping 250% gear range.

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Sports

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  • There must be a terrible amount of friction on the planetary gears in this Schlumpf system (it's Swiss, not German). I certainly wouldn't use it on any bicycle that I wanted to go fast on.

  • Schlumpf huh....must be German.

  • Wow...All of a sudden there is a use for those old Mavic BB Champfering tools...provided it's at the same angle.

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