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  1. #1
    Newbie
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    May 2008
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    circa 1990 Cannondale 3.0 Criterium
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    Shimano 600 compatibility

    I'm fairly new to the biking, so this may be a stupid question. I purchased a used 1990 Cannondale 3.0 Criterium, and I need to change the rear cassette to make the bike easier for climbing.


    I was in the process of switching out the 11/25 8 speed rear cassette for a 12/32 8 speed rear cassette, and discovered the new one doesn't fit!

    The old cassette is a Shimano 600 8 speed, and was switching to SRAM 850 8 speed. The hub on my wheel is too big for the SRAM to fit! Aren't SRAM and Shimano compatible?

    Thoughts?

  2. #2
    Wrench User
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    Nov 2007
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    Perhaps your rear wheel is a newer nine speed compatible. Check your old cassette to see if you removed a spacer in addition to the cassette. If so, put the spacer on before the SRAM 850 and you should be good to go.

    If not, I don't know. As you mentioned SRAM and Shimano cassettes are interchangeable.

  3. #3
    Newbie
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    May 2008
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    problem solved!

    I figured it out!
    For whatever reason, the SRAM 850 came with a black plastic cylinder in the middle of the cassette. I had to pry it off so the cassette would slide onto the hub. I'm not sure the purpose of the the black cylinder covering, but I removed it so the cassette would fit correctly. Problem solved!

  4. #4
    Senior Member DieselDan's Avatar
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    Mar 2003
    Location
    Beaufort, South Carolina, USA and surrounding islands.
    My Bikes
    Cannondale R500, Motobecane Messenger
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    Quote Originally Posted by Tanked in Tulsa View Post
    I figured it out!
    For whatever reason, the SRAM 850 came with a black plastic cylinder in the middle of the cassette. I had to pry it off so the cassette would slide onto the hub. I'm not sure the purpose of the the black cylinder covering, but I removed it so the cassette would fit correctly. Problem solved!
    Gosh darn packing material.
    Bikes use brakes to stop.

    If your bike has breaks, don't ride it.

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