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  1. #1
    Senior Member freeranger's Avatar
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    Alivio rear der--32T cassette?......

    The Shimano Alivio rear der. is only spec'd for 30T. Why not use it with a 32T, since it won't (shouldn't) see the large-large combo anyway? (or is shouldn't the definitive word here?

  2. #2
    Senior Member rufvelo's Avatar
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    Even if you do use the 32 cog, the Alivio will work - I have and it works just fine. In fact most rear derailleurs are conservartively spec'd i.e. the 27max 105 RD works just fine on 28s, 30s as long as the b screw is set properly.

  3. #3
    fitter, happier Ronin's Avatar
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    I have an Alivio rear der. on my wifes bike with a 34t cassette and it works just fine. No troubles setting it up or anything.

  4. #4
    barnfullagts
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    I have an 8spd XT rear derailler spec'd for 32T and it works fine on a 9 spd cassette with a 34T.

  5. #5
    Senior Member caotropheus's Avatar
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    Same for my bicycle, alivio with 34 T

  6. #6
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by freeranger
    The Shimano Alivio rear der. is only spec'd for 30T. Why not use it with a 32T, since it won't (shouldn't) see the large-large combo anyway? (or is shouldn't the definitive word here?
    The issue is the possibilty of the upper pulley rubbing the biggest cog. Up to a point you can adjust that out with the "B" screw on the back of the derailleur mount. Doesn't have anything to do with chain wrap or big/big combinations.

  7. #7
    Banned.
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    Must not be much of an issue since Trek sells the 4300 with a 32 and an Alivio. I rode mine long enough to wear it out, and never had any trouble.

    I also switched to a 11/28 just because of preference but the 32 works fine. Where did you see that spec?

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