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Thread: dual drive

  1. #1
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    Reputation: dashSC's Avatar
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    dual drive

    I'll preface this with saying I've never opened a hub, I don't really know how they work, though I could mount a pretty good series of guesses.

    I got to thinking about this as I really only use 2 gears on my road bike, and I really like the simplicity [and looks] of a good singlespeed setup. I see those two-sided hubs around sometimes, though usually with one freewheel and one fixie setup. Would it be possible to have a drivetrain on each side, running differing gear ratios, and have some sort of toggle that you could switch between them ? One of the drivetrains would be engaged, the other would just spin free in both directions.

    Or would one be better off just buying an internally-geared hub ?

  2. #2
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    Reputation: phxartboy's Avatar
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    Quote Originally Posted by dashSS
    Would it be possible to have a drivetrain on each side, running differing gear ratios, and have some sort of toggle that you could switch between them ? One of the drivetrains would be engaged, the other would just spin free in both directions.
    Interesting question.

    I have the world's only dual drive full sus and can't think of a "toggle" solution, but I would be curious to see what smarter people than myself have to say about such weirdness.


  3. #3
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    I imagine there are a good number of possible ways you could accomplish this, but the main this is if any of them would be efficient, practical, and not too expensive. Past a certain point, and it's probably better to just get an internally-geared hub, I would think.

  4. #4
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    [QUOTE=phxartboy]Interesting question.

    I have the world's only dual drive full sus and can't think of a "toggle" solution, but I would be curious to see what smarter people than myself have to say about such weirdness.

    are there any advantages to running that set up or is it just for fun??

  5. #5
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    I've only read about a couple of different options to do this

    first being a kickback two speed hub is i believe what it is called, basically an internally geared hub but you slightly backpedal to change the gears. no idea how the mechanical side of the works.

    a little bit stranger is a hub that is one gear when pedaled forward and another when you pedal backwards. not sure what it was called or who made either of these but i know they exist or did at one time

  6. #6
    i don't give a shift
    Reputation: collideous's Avatar
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    You could also get a mountain drive by Schlumpf. Not cheap, but it would look clean with no need for a shifter on your handlebar. You shift gears by pushing your heel against the push-button on the crank arms.

    blogging @29in.CH

  7. #7
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    Quote Originally Posted by collideous
    You could also get a mountain drive by Schlumpf. Not cheap, but it would look clean with no need for a shifter on your handlebar. You shift gears by pushing your heel against the push-button on the crank arms.
    Very cool idea/product, but that's about 3 times the price of my entire bike so far.

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