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  1. #1
    100 kW :) ifox's Avatar
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    "double" derailleur, "tripple" cranckset

    Sorry for newbie question but can "double" derailleur be used on "tripple" crankset?

  2. #2
    Senior Member royalflash's Avatar
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    no- the cage will be too short

    (edit - good point retro grouch- I jumped to conclusions and assumed the rear derailleur)
    Last edited by royalflash; 11-01-05 at 08:31 AM.
    only the dead have seen the end of mass motorized stupidity

    Plato

    (well if he was alive today he would have written it)

  3. #3
    Senior Member Retro Grouch's Avatar
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    You asking about the front or rear?

    A double front derailleur won't lift the chain as well from the granny to the middle ring. If you're using STI shifters, many people have a hard time getting the front derailleur to shift to their satisfaction anyway so I'd definitely recommend using the right front derailleur for a triple.

    On the rear I'd use a short cage double derailleur on a personal bike but I'd prefer to install the correct long cage derailleur on a customer bike. Generally, with a triple, you only use the granny gear with the largest two or three cogs in back. Since you're never getting even close to using the little/little combination, you can live without having enough chain slack take up capability to handle it.

    I wouldn't like to put a short cage on a customer triple because 1. I don't know for sure how they ride. and 2. I'd like to give the impression that I pay proper attention to the details.

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