9 and 10 speed compatability. Mavic ksirium freehub and SRAM

retroboy
retroboy Posts: 9
edited April 2009 in Workshop
All, apologies for the duplicate, but i really need some help to resolve this before I spend some money badly! Thanks, Ian

From a previous life, I have a Cannondale CAAD5 which came with Mavic Cosmos basic wheel-set. It runs Shimano Ultegra 9sp, and works fine. In a moment of weakness i bought a mint pair of Mavic Ksirium SL SSC wheels. Beautiful. I took the cassette and the spacer from the freehub, and fitted it to the new Ksiriums. Fantastic, it works brilliantly. I havnt ridden in a while, and thought i would treat myself to a carbon steed. The Halfords/Boardman '09 Team carbon at £1000 looks a steal, and with 'ride-to-work' very affordable. Its known weakness seems to be the fitted wheelset. So, can I use my Mavic Ksiriums with a 10sp SRAM Rival set-up? Will I need a different spacer? if so, where would I get such a thing, and where would i get a duplicate of the spacer i alteady have so i can use my Cosmos wheelset again on my Cannondale? Any help greatly appreciated!

Ian

Comments

  • andy_wrx
    andy_wrx Posts: 3,396
    Cassettes are interchangeable between SRAM and Shimano (assuming you stick to 10sp, 9sp, 8sp, etc not mixing number of speeds).

    The shifters and mechs aren't - if you're using SRAM shifters you need a SRAM mech, and if you're using Shimano shifters you need a Shimano mech, but you can use a 10sp Shimano or SRAM cassette on either.

    The Mavic M10 hub you have is not a Shimano or SRAM hub, it's a Mavic hub.
    It has the same spline pattern as Shimano but it's wider than a Shimano hub because Mavic also sell a wider Campag-spaced cassette which fits it, allowing you to use it on a Campag bike.

    Thus to run Shimano (or SRAM) on it, you need the Mavic spacer you have on your Cosmos wheels, which is ca 3mm thick.
    You should get one when you buy the wheel, but if not, Chain Reaction for instance sell them at £1.99
    http://www.chainreactioncycles.com/Mode ... elID=25399
    (- look like the one on your Cosmos - the three notches, etc ?)

    *but ignore CR's description of this item !*
    "This handy cassette spacer allows you to use 10 speed cassette on 8/9 speed cassette body."
    - that's not true : assuming that their item title "Mavic Cassette Spacer" is correct, and it's the spacer in the picture, this is the spacer you need to run a Shimano or SRAM cassette on a Mavic M10 hub, nothing to do with 10sp to 8/9sp.

    What you *also* need is a 10sp spacer - a Shimano 10sp cassette is actually narrower than an 8 or 9sp cassette, so to run one on a Shimano 8/9/10sp hub you need a thinner spacer, ca 1.5mm, which comes with the cassette : the 8sp or 9sp cassettes don't need it, a 10sp cassette does
    - NB I'm pretty sure SRAM 10sp is the same, but I don't actually have first-hand experience of this, although I'm pretty sure...

    So I think
    - get the Mavic spacer from ChainReaction
    - take cassette off the Boardman and there should be the thinner 10sp spacer fitted behind it
    - fit both the thicker Mavic spacer and the thinner 10sp spacer behind the cassette on your Ksyriums

    Or you could leave your Boardman's wheels alone and use them as your training wheels, get another cassette for your Ksyriums and use them for 'best'.
    In which case, you'll need another cassette, another 10sp spacer (ask at your LBS or get it from SJS http://www.sjscycles.co.uk/product.asp? ... rc=froogle), plus the Mavic spacer from CR.
  • retroboy
    retroboy Posts: 9
    Andy, many thanks, this sounds really idiot proof! you are a gent!
  • Apologies for hijacking your thread, but I wouldn't mind asking a related question.

    I have some Mavic Ksyrium ES's running a 10sp Campag cassette. I want to switch the freehub over to fit my Sram Red cassette. Do I need to buy any spacers or will the fact that both cassettes are 10 spd just require me to buy the freehub which I have found here:

    http://www.pedalon.co.uk/acatalog/copy_ ... eehub.html
  • andy_wrx
    andy_wrx Posts: 3,396
    Same answer as I made above, this is a Mavic M10 freehub, so with it you'll be in same position as the bloke above is.

    You'll need the Mavic spacer I linked to at ChainReaction
    (one came with my Ksyriums, with their M10 freehub)

    Plus, if you were running Shimano 10sp cassette, you'd also need the other thinner Shimano 10sp spacer (I did)
    - now, I assume you need that for SRAM, but I've never tried it myself....
  • Ok thanks. I'll get both spacers to be sure ( I doubt I still have the one that came with it originally).
  • Pokerface
    Pokerface Posts: 7,960
    I have 2 sets of Mavic wheels with Sram Red cassettes - and both of them use a spacer. Just one spacer and I don't know the size - but definitely a spacer.