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Thread: derailleur ?

  1. #1
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    derailleur ?

    what is the difference between a short cage and a long cage derailleur ( why would you use one over the other )?
    Thanks,
    John

  2. #2
    Senior Member barba's Avatar
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    The long cage will take up more slack in a chain. This is useful on a bike where there is a large difference between the lowest and highest gear. On road bikes you will most often see a long cage on a triple. You need enough chain to get around a 52t chainring which leaves a lot of slack chain when you use the 30t ring.

  3. #3
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    I think the shimano mega range cassette and freewheel requires a long cage.
    2000 Montague CX, I do not recommend it, but still ride it.
    Strida 3, I recommend it for rides < 10mi wo steep hills.
    2006 Rowbike 720 Sport, I recommend it as an exercise bike.
    1996 Birdy, Recommend.
    Wieleder CARiBIKE (folding), decent frame.

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