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Jump start design

  1. Dec 21, 2008 #1
    I need a method of locking a freewheel cog at the back wheel of a bicycle.
    Have motorized bicycle. It has a chain from the engine to an overrun cog on back wheel. The engine will only be used intermittently, about 10% of the time. I need to jump start the engine often, but I need as little effect on the pedaller as possible whilst the engine is not running. Hence the overrun cog at the back wheel rather than a constantly driven chain with a clutch up at the engine.
    Would anyone know of any simple robust designs, preferably off the shelf.
  2. jcsd
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