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8 speed vs 9 speed cassette

  • 18-10-2012 11:04pm
    #1
    chickenfarmer
    Registered Users, Registered Users 2 Posts: 136 ✭✭


    Hi All ! This may be a stupid question but I am going to ask it anyways :D
    I have a Scott S50. It has Sora groupset. (8 speed Sram cassette) I'm thinking of upgrading the cassette to a 9 speed ultrega cassette. Is this possible ?


Comments

  • #2
    Plastik
    Registered Users, Registered Users 2 Posts: 2,992 ✭✭✭Plastik


    No, spacing on the cassette is different.


  • #3
    chickenfarmer
    Registered Users, Registered Users 2 Posts: 136 ✭✭chickenfarmer


    Ah !
    Thanks ! Back to the drawing board so.


  • #4
    Tonyandthewhale
    Registered Users, Registered Users 2 Posts: 1,867 ✭✭✭Tonyandthewhale


    A 9 speed ultegra cassette will fit on your hub. However, you will then need a 9 speed chain and 9 speed shifters. Ideally you would want 9 speed derailleurs and a 9 speed compatible chainset as well.


  • #5
    ednwireland
    Registered Users, Registered Users 2 Posts: 14,573 ✭✭✭✭ednwireland


    i'm still running 7 on one bike (have you tried getting 7 speed cassettes) basically until i find a decent cheap set of 8 or 9 shifters (if i dont it will stay at 7)

    My weather

    https://www.ecowitt.net/home/share?authorize=96CT1F



  • #6
    chickenfarmer
    Registered Users, Registered Users 2 Posts: 136 ✭✭chickenfarmer


    Thanks for all the replies. I only got the bike in the middle of July and tbh I genuinely thought the sora was 3 x 9 so that's why I was considering the 9 speed ultegra. I have just bought a set of Mavic Ksyrium Equipe wheels so was going to upgrade the cassette while I was at. I'll just pickup an 8 speed cassette for now. If I going spending money on changing most of the groupset I'm pretty sure herself will finally lose the plot :-)


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  • #7
    doozerie
    Registered Users, Registered Users 2 Posts: 4,830 ✭✭✭doozerie


    Something to be aware of is that while a 9 speed cassette will probably fit on a wheel that currently has an 8 speed cassette, once mounted on the bike you may find that the smallest cog is too close to the frame to be usable. Basically, older wheels might not be entirely compatible with 9 speed cassettes, due to the design of the hub. Newer wheels should probably be fine.


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