Shimano Freehub/105 cassette question

xing88
xing88 Posts: 15
edited September 2012 in Workshop
Hi guys,

Firstly, pardon my stupidity as I am a complete novice when it comes to mechanics.

I have bought a set of Dura Ace c24's to replace the Mavic Aksium's on my 2012 Boardman Team Carbon. The Boarman is a 10 speed witha Shimano CS5700 cssette.

Basically, the Mavic has two spacers before the cassette and the freehub body is 2mm longer than the Dura Ace.

So, when I put the 2 spacers and the cassette on the Dura Ace, the free hub body is too short for me to be able to do up the lock ring.

For what its worth, here is the response from the guy i bought the wheels from:-

"That is definatly a 10 speed shimano/sram freehub. Which cassette are you using & what seems to be the problem with the hub? You may require a spacer / shim for the back of the cassette. You get this when you buy a cassette & it enables you to use 9 or 10 speed blocks. 9 speed is wider believe it or not when you use 10 without the shim you cant tighten the lock ring fully & the cogs rattle on the hub body."

Does anyone have any advice on why the cassette will not fit onto new wheel?

Many thanks.

Comments

  • nicklouse
    nicklouse Posts: 50,673
    one spacer is for the mavic hub. the other spacer is to make the 10spd cassette as wide as a 9 speed cassette, as covered in the FAQ viewtopic.php?f=40101&t=12586223
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Thanks nicklouse.

    It's been a long evening. So in shjort from aracer's post...I shouldn't need any spacer on the DA?
  • nicklouse
    nicklouse Posts: 50,673
    no you need one spacer. the cassette one not the Mavic one.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Ok, is that the perfecly round thinner one or the thicker one with the notches?
  • keef66
    keef66 Posts: 13,123
    The perfectly round thinner one
  • andy_wrx
    andy_wrx Posts: 3,396
    Mavic Aksiums, Ksyriums & Cosmics have the Mavic M10 hub (unless they're Campag fit, when they have an ED10).
    This M10 hub is not a Shimano hub, it's a Mavic hub.
    It has the same spline pattern as Shimano & SRAM, so these cassettes fit it, but it's actually 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 just by fitting this cassette.

    Thus to run Shimano or SRAM on it, as it's wider than a Shimano hub, you need a Mavic spacer, which is ca 3mm thick and has three notches in it (really old Shimano cassettes used to have three protruding rivets on the back which went into these notches)

    If you were running Shimano 8sp or 9sp, or SRAM 8 or 9 or 10sp, or Tiagra 10sp cassette, this is all you'd need, but as you're running a 105 10sp cassette (or DA or Ultegra) you *also* have a Shimano 10sp spacer
    - a Shimano DA, Ultegra or 105 10sp cassette is actually narrower than an Shimano 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.
    (well, it's not narrower, it's milled-out at the back, this spacer fills it in and makes it same width as 8sp or 9sp : SRAM 10sp cassettes and Shimano Tiagra 10sp cassettes aren't milled-out like this and so don't need the spacer)

    So when running on the Mavic M10 hub, you'd have had the Mavic thicker spacer because you're running Shimano on the M10 hub, *plus* the thinner Shimano spacer as you're running 10sp.

    Now you're just running on a Shimano hub, you just need the thinner Shimano 10sp spacer
  • Thanks to all of you (couldn't see a thanks button).

    All sorted, what a difference these beauties make!!