Casette size

scally56
scally56 Posts: 115
edited March 2008 in Workshop
Random question i know. Right i'm in the middle of chaning my groupset from shimano 8pd to a Campy 10sp, is there any difference in the actual width of the casette? Amy ideas if there is a major difference in fitting the 10sp into the space made for an 8sp.

Simon
http://www.pinkbike.com/photo/1851942/

Comments

  • redddraggon
    redddraggon Posts: 10,862
    A campag 10 speed cassette will not fit onto a shimano 8/9/10 speed hub. They have Different spline patterns.
    I like bikes...

    Twitter
    Flickr
  • scally56
    scally56 Posts: 115
    I'm in the process of trying to sort that out, not sure if its going to work or not. what i meant is the point from the where the biggest ring is by the wheel and the smallest is by the frame is there any major difference is widths that way. Hope that explains what i'm on about.
    http://www.pinkbike.com/photo/1851942/
  • John.T
    John.T Posts: 3,698
    edited March 2008
    The Campag cassette is wider as well as having a different spline pattern. If you have non Shimano wheels (ie:- Mavic or similar) that will take a change of freehub assy then you should have no problem. If you have Shimano wheels then you will need to use non standard cogs such as Marchisio or TA. I am not sure if they will fit more than a 9sp Campag on a Shimano freehub.
    My Fleet.
  • scally56
    scally56 Posts: 115
    In that case the easy option it is then, i'll stick with shimano. Cheers for the replies
    http://www.pinkbike.com/photo/1851942/
  • John C.
    John C. Posts: 2,113
    There is another option.
    You can run a Shimano 8 or 9 speed rear end with a campag 10 ergo lever. Leave your rear wheel and mech and change the rest. For 8 speed just attach the rear mech as normal, for 9 speed, you'll have to hubub the cable. It's easier than it sounds and there are lots of web sites showing how to do it.
    http://www.ripon-loiterers.org.uk/

    Fail to prepare, prepare to fail
    Hills are just a matter of pace
  • John.T
    John.T Posts: 3,698
    You did say you were changing to Campag. You can fit 10sp Shimano to any Shimano 8sp hub so you have no problem upgrading that way. You could even save money by not changing the chainset and mechs if you wish. Minimum requirements are STIs, cassette and chain. The full set will work a bit slicker but the minimum will work fine if set up carefully.
    My Fleet.
  • John C.
    John C. Posts: 2,113
    Sorry John T you can not fit Simano 9 or 10 speed to a Shimano Sora hub it is a mill or two too short to fit
    http://www.ripon-loiterers.org.uk/

    Fail to prepare, prepare to fail
    Hills are just a matter of pace
  • redddraggon
    redddraggon Posts: 10,862
    John C. wrote:
    Sorry John T you can not fit Simano 9 or 10 speed to a Shimano Sora hub it is a mill or two too short to fit

    I'm not too sure about that.

    Shimano do 8/9/10 speed compatible hubs and 10speed only hubs.

    The Sora hub will take the same cassettes as a Tiagra hub etc
    I like bikes...

    Twitter
    Flickr
  • John.T
    John.T Posts: 3,698
    That is correct Red. You must have an old hub John C. All current Shimano cassettes are the same width except the 10sp which requires a thin spacer supplied with the cassette.
    My Fleet.
  • John C.
    John C. Posts: 2,113
    I have a 3-4 year old Sora back wheel and it will not take a 9 speed cassette. I have no idea how long it was on the shelf before i bought it but if I say one thing and other forum members say another it's worth checking it out with a dealer. I will happily be proved wrong if new ones will accept 8, 9 and 10 speed. :lol:
    http://www.ripon-loiterers.org.uk/

    Fail to prepare, prepare to fail
    Hills are just a matter of pace
  • peanut
    peanut Posts: 1,373
    edited March 2008
    Basically if the distance between your dropouts is 130mm then you should have no problems . The 9 speed and 10 speed were both desinged to be backwardly compatable with 8 speed freehubs.


    The Shimano 9 speed is wider than an 8 speed so it has a 2 mm indent inside the largest sprocket splines which allows it to slightly overhang the inside face of the freehub to fit onto an 8 speed freehub. 10 speed is narrower than a 9 speed and 8 speed so it needs a small shim washer to correct the spacing on a 8 speed hub.

    There are a few combinations that do not work such as the Dura ace 10 spd aluminium freehub which will only accept a 10 speed cassette
    this is where you need to look for advice on changing cassettes .
    Branford cycles cassette chart

    also here sheldon Brown cassette guide[/url]
  • aracer
    aracer Posts: 1,649
    Will it take an 8, John?
  • aracer
    aracer Posts: 1,649
    peanut wrote:
    The Shimano 9 speed is wider than an 8 speed so it has a 2 mm indent inside the largest sprocket splines which allows it to slightly overhang the inside face of the freehub to fit onto an 8 speed freehub.
    Wrong. The last sprocket on a 9-speed cassette is flat - no indent. It is in fact slightly wider than an 8 (~1mm IIRC), but the extra width is on the outside.
    10 speed is narrower than a 9 speed and 8 speed so it needs a small shim washer to correct the spacing on a 8 speed hub.
    The bit which fits on the hub might be narrower, but the sprockets themselves are wider - the difference being because the big sprocket overhangs the back slightly (as you were claiming for 9). That's why you can't use a normal flat sprocket at the end of a 10-speed cassette as you can for 8 or 9. I've never understood the reason for the spacer, as it is just filling the larger than necessary indent (the cassette needs an indent, just not as big a one as they're given it).

Categories