"8" spd derailleur with 9 spd cassette and chain

Discussion in 'Cycling Equipment' started by Victor, Oct 27, 2003.

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  1. Victor

    Victor Guest

    My wife just bought a 'cross bike with a relatively tall lowest gear of 38x25 and 9spd Shimano 105
    STI shifters and derailleurs. I'm thinking of swapping out the rear derailer for a mtb variety to
    accomodate a 32 or 34 tooth cog. I have a neglected old mtb with a STX derailleur from about 5 years
    ago that was probably designed at the time for 8 spd use. My wife also has a mtb bike purchased in
    1999 with an LX derailleur that came with an 8 spd cassette. Any reason why either of these devices
    wouldn't serve the purpose? I would more than likely need a new 9 spd chain as there probably aren't
    enough links in the current one.

    Thanks for your advice, Victor

    PS In case you're wondering, I did in fact search through rec*tech for similar posts but didn't get
    that warm fuzzy feeling. I apologize for the unoriginality of the topic.
     
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  2. weinstev-<< My wife just bought a 'cross bike with a relatively tall lowest gear of 38x25 and 9spd
    Shimano 105 STI shifters and derailleurs. I'm thinking of swapping out the rear derailer for a mtb
    variety to accomodate a 32 or 34 tooth cog. I have a neglected old mtb with a STX derailleur from
    about 5 years ago that was probably designed at the time for 8 spd use. My wife also has a mtb bike
    purchased in 1999 with an LX derailleur that came with an 8 spd cassette. Any reason why either of
    these devices wouldn't serve the purpose? I would more than likely need a new 9 spd chain as there
    probably aren't enough links in the current one.

    Yes, the MTB rear ders you mention will work just fine with the 9s components.

    Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
    (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
     
  3. Victor

    Victor Guest

    > weinstev-<< My wife just bought a 'cross bike with a relatively tall lowest gear of 38x25 and 9spd
    > Shimano 105 STI shifters and derailleurs. I'm thinking of swapping out the rear derailer for a mtb
    > variety to accomodate a 32 or 34 tooth cog. I have a neglected old mtb with a STX derailleur from
    > about 5 years ago that was probably designed at the time for 8 spd use. My wife also has a mtb
    > bike purchased in 1999 with an LX derailleur that came with an 8 spd cassette. Any reason why
    > either of these devices wouldn't serve the purpose? I would more than likely need a new 9 spd
    > chain as there probably aren't enough links in the current one.
    >
    > Yes, the MTB rear ders you mention will work just fine with the 9s components.
    >
    >
    > Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
    > (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"

    Peter,

    thanks for the response. I surfed around a little more and saw that Sheldon Brown had provided the
    same advice on his website. Unfortunately, and probably intentionally, the various derailers are
    marketed as being X-spd specific.

    Victor
     
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