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  1. #1
    Senior Member
    Join Date
    Jul 2007
    Location
    Peoria, Illinois
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    Fixed problem with flickering ultrafire cree light

    I bought this cheap $20 80 lumen light from Dealexreme. The problem is it often flickers and changes modes. I think I fixed the problem by adjusting how the LED part is screwed into the head. If I unscrew it, it comes closer into contact with the batteries. The problem seems that it self-loosens as it vibrates. So I may apply some loctite to it to keep it in place.

  2. #2
    Senior Member socalrider's Avatar
    Join Date
    Mar 2004
    Location
    Upland, CA
    My Bikes
    Litespeed Liege, Motorola Team Issue Eddy Mercxk, Surly Crosscheck Cyclocross bike, Fisher Supercaliber Mtn. Bike
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    placing a small piece of aluminum foil in the tailcap area between the spring an bottom of the battery also helps with changing modes..

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