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  1. #1
    a lazy pedaler
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    Jul 2009
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    1,761

    no chain or belt?

    a friend sent me this one today...

    http://www.stringbike.com/

  2. #2
    mtbr member
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    Jan 2011
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    Oh sweet jesus... 'innovation' for the sake of innovating. So. F-ing. Stupid. It's like a cross between those push pedal scooters and biopace chainrings. Gag.

  3. #3
    mtbr member
    Reputation: Morpheous's Avatar
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    Mar 2006
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    493
    +1 this idea is silly. Too complex and not easily servicable. Shaft drive is a good option if you want no exposed drivetrain. www.biomega.com
    2014 SC NOMAD C Nior
    2015 Surly Instigator 2.0 26+
    2012 Diamondback Sortie 27.5+

  4. #4
    mtbr member
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    I'm sure that would feel delightful for one of those "strings" to snap and nail you in that back of the leg as you're pounding up a hill...

    Gene

  5. #5
    The Brutally Handsome
    Reputation: Sizzler's Avatar
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    Sep 2009
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    I'm working on a bubble gum chain prototype that you can chew when it's worn out.

  6. #6
    Ride Responsibly
    Reputation: LWright's Avatar
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    Jan 2006
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    1,946
    Notice the front qr rotating?

  7. #7
    mtbr member
    Reputation: BrianMc's Avatar
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    Jan 2010
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    4,141
    Agree. For an SS it is a lot of complexity. Unless it gains efficiency or saves weight, it is just a fun demonstration piece. One YouTube video shows that the rear wheel drops out and leaves the drives in place unmolested, for easy tire repair/wheel-tire swaps.

    Lateral forces? Just how narrow (to allow room for the drives = weak) is that rear wheel and how well will it take side forces? BTW the YouTube video of an actual bike has no rotating QR lever.

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