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.
[url] http://www.chainreactioncycles.com/Models.aspx?ModelID=885 [/url]
Just get a set of BBB from Dotbike.
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
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.
ceramic bearings in a jockey wheel 😆
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.
Thanks PaulD - will be making a purchase soon.
Have you seen the price of these?! £119.99 😮
[url] http://www.chainreactioncycles.com/Models.aspx?ModelID=22262 [/url]
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.
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.
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.
Decathlon sell Tacx with stainless steel bearings for £8 pair.
Interesting. I was about to ask about the tacx stainless ones.
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