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  • Shimano jockey wheels on CRC – Help!
  • tommo999
    Free Member

    Anyone know which of these will fit my XT shadow mech bottom pulley? I know it needs 11 teeth but I can’t tell what I need.
    http://www.chainreactioncycles.com/Models.aspx?ModelID=885

    PaulD
    Free Member

    Just get a set of BBB from Dotbike.

    http://www.dotbike.com/p/3992

    Excellent product at a bargain price of £12.82.

    Better than XT as they have cartridge bearings top and bottom, clearly labelled…..more like XTR at a third of the price.

    PaulD

    andyl
    Free Member

    The XT are ceramic bearing aren’t they which should be better. i would have said just get some basic Deore or LX 9 speed ones but they don’t seem to stock them. Very confusing.

    I just use some aluminium ones from Toronto cycles – bought a load of them for friends and worked out at about £8 a pair.

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    float
    Free Member

    ceramic bearings in a jockey wheel 😆

    andyl
    Free Member

    why laugh? It does actually make sense when you consider how exposed to mud and water a jockey wheel is. What I don’t agree with is the cost of them so just use stainless steel bearings and look after them.

    I would actually say it is the most sensible place for one on a bike and it seems the shimano engineers agree with that thinking.

    tommo999
    Free Member

    Thanks PaulD – will be making a purchase soon.

    Have you seen the price of these?! £119.99 😮
    http://www.chainreactioncycles.com/Models.aspx?ModelID=22262

    Onzadog
    Free Member

    Think some people are assuming that bearing means little balls. The xt are a plain bearing (also known as a bush) and yrs, they do use ceramic.

    float
    Free Member

    It does actually make sense when you consider how exposed to mud and water a jockey wheel is

    ah didnt think about that. im presuming though that the races are still stainless steel as 100% cearmic bearings are hideously expensive.

    andyl
    Free Member

    I think my XT ones had a ceramic race with a ceramic bush that had slots at every 90 degrees. They also provide float which is needed in the top jockey wheel. Bushes do make sense in a lot of applications compared to ball bearings. But they do seem to take the p*** with the cost.

    WiretownMan
    Free Member

    Decathlon sell Tacx with stainless steel bearings for £8 pair.

    Onzadog
    Free Member

    Interesting. I was about to ask about the tacx stainless ones.

    PaulD
    Free Member

    The original XT is a porcelain ceramic bush which has float and can be run dry….but it has more drag than a cartridge.
    BBB are stainless cartridges that need grease. The top/guide pulley has a floating mount, so in my opinion is the winning ticket.
    I always dismantle and fill any bearing with grease before fitting…preferably synthetic grease that is not soap+oil that will wash out or dry out.
    100% success so far…only 40 years maintenance experience.

    PaulD

Viewing 12 posts - 1 through 12 (of 12 total)

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