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Thread: drill bike

  1. #1
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    drill bike

    http://www.munkeyworks.com/blarg.html

    crazy, must be very hard to steer.

  2. #2
    Can't touch this! FireTeamCharlie's Avatar
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    Cool, but I dont think a drill would have have the power to take somene up hill.

  3. #3
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    "The flexing of the brace also makes an automatic
    transmission. As the drill spins faster the chain
    jumps to larger chain rings."

    I wonder if he built it to flex on purpose knowing it would jump cogs or if it was a surprise and he thought, "Cool, an auto tranny."

  4. #4
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    I hope he has a lot of cordless drills laying around. I think he's going to be going through a few.
    Paul the Alloy Addict

  5. #5
    holyrollin' FlatTop's Avatar
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    I wonder how a car starter motor and a motorcycle 12 volt battery would work? Starters have excellent torque, and the new compact ones using rare-earth magnets and reduction gears are pretty small. It might be a good "hillclimber" motor.

  6. #6
    Unique Vintage Steel cuda2k's Avatar
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    Quote Originally Posted by FlatTop
    I wonder how a car starter motor and a motorcycle 12 volt battery would work? Starters have excellent torque, and the new compact ones using rare-earth magnets and reduction gears are pretty small. It might be a good "hillclimber" motor.
    Starters are meant to be run for a few seconds at a time, not continually for minutes (let alone hours) on end. In grade school, I was part of a project that attempted to use a starter motor to move a small wooden go-cart kind of thing. We melted 5 starters within 3 days of building.

  7. #7
    Recumbent Evangelist
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    The best electric motor for a bike is still the hub motor. Nothing that I have found matches the performance/size of a hub motor.

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