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  1. #1
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    Rear Derailleur question

    What is the difference between long, medium, and short (other than length) cage rear derailleurs?

    Thank you

  2. #2
    Official Website Waterboy born2bahick's Avatar
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    Sealed bearings on jockey pulleys, weight to strength ratios. Materials used can be like tin cans tin cans or extremely stiff CF.

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    Thanks for the response.

    What advantages do the different lengths give?

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    Official Website Waterboy born2bahick's Avatar
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    Taking up chain wrap, Quick tutorial, (if you run a 1x9 setup, a short cage should do anything you need. 2x9 maybe a mid length, and a three x 9 maybe a long cage) JUst a guide line, not a "set in stone" rule.

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    ^yeah basically, longer derailleur= able to handle greater change in chainlenght, so if you have a 1x9 on an 11-23 cassette there is very little diff in chain lenght between ur easy and hard gears, but if you have a 3x9 on a 11-36 cassette there is a ton of change in chain lenght. The shorter the cage the less likely you are to break the derail

  6. #6
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    yeh the longer the better, well better handling anyway.
    Articles, information and guides at Mountain Biking Guide

  7. #7
    Lost in the Black Hills mx_599's Avatar
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    Quote Originally Posted by cyrusjax View Post
    yeh the longer the better, well better handling anyway.
    i thought the opposite would be true??

    i always aim for the shortest cage length per application. i am running a med cage on a 5.5" travel bike with 3-rings up front.

    mx

  8. #8
    Svr
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    Quote Originally Posted by jpl8910 View Post
    What advantages do the different lengths give?

    There is no advantage to different cage lengths -- you choose the size you need depending on how your bike is geared. If you normally wear a size 10 shoe, there would be no advantage to wearing a size 8 or size 12.

    It all depends on the derailleur capacity you require for your setup.

    http://www.parktool.com/repair/readhowto.asp?id=26

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