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Instructables.com

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  Battery free bike light.

  Posted: March 6th, 2010, 11:32pm MST

    Step up and get your own "dynamo hum"...(FZ).  All jokes aside, its a simple dynamo light mounted to a Planet Bike light bracket.  On about 6 cranks I get 20 to 25 minutes of light. material dynamo light....Harbor Freight, 2 for $8. quick release light strap...most have a screw to change the mo...
  By: onrust
  
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