Cuppa Bru Posted June 13, 2013 Posted June 13, 2013 Buying some things from CRC.Don't know which Jockey Wheel to choose even after researching for a whole hour (CRC have a limited selection). http://www.chainreactioncycles.com/Models.aspx?ModelID=885 I have a Shimano Deore XT 9 spd RD.
David Marshall Posted June 13, 2013 Posted June 13, 2013 You can use any Shimano pulley wheels for 9 spd (and most of them across the different speed derailleurs as well). I prefer the ones with a metal bush to the ones with bearings or the ceramic ones, as they wear rather than fail but that is just my opinion. Just be sure that you fit the guide wheel at the top and the pulley one at the bottom and note the direction arrow.
Dicky DQ Posted June 13, 2013 Posted June 13, 2013 9spd also works on 10spd even the cheapest ZAR90/ser ones
Helpmytrap Posted June 13, 2013 Posted June 13, 2013 I couldn't find any Shimano pulleys online so I landed up getting SRAM pulleys. Although they are wider than the Shimano, they do work (the cage has a slightly larger gap between the plates now.)I just had to set the limit screws and 'tune' the RD and all is 100%.
Cuppa Bru Posted June 13, 2013 Author Posted June 13, 2013 Interesting responses. Hadn't read about any cons for ceramic except the cost.Also read that I can use any which one, so long as the number of teeth correspond to mine.Problem was that googling some of the codes and descriptions brought up nothing I could use to ID whether for 9spd or not.
Skylark Posted June 13, 2013 Posted June 13, 2013 You can use any Shimano pulley wheels for 9 spd (and most of them across the different speed derailleurs as well). I prefer the ones with a metal bush to the ones with bearings or the ceramic ones, as they wear rather than fail but that is just my opinion. Just be sure that you fit the guide wheel at the top and the pulley one at the bottom and note the direction arrow. What's up with there being a different pulley for the top and bottom?They look virtually identical normally but they are sometimes marked differently?
Bat-ass Posted June 14, 2013 Posted June 14, 2013 (edited) What's up with there being a different pulley for the top and bottom?They look virtually identical normally but they are sometimes marked differently? you will see that the bottom one doesnt have any left to right play and runs with a slightly different bearing. i think because the bottom one carries more chain tension load. The top one has a little left to right play. I think this is to allow the chain to line itself up a bit better on the cassette as its probably impossible to set it exact? Well, thats the conclution i'v drawn? if i'm wrong, can someone correct me? Edited June 14, 2013 by Bat-ass
Johan Bornman Posted June 14, 2013 Posted June 14, 2013 you will see that the bottom one doesnt have any left to right play and runs with a slightly different bearing. i think because the bottom one carries more chain tension load. The top one has a little left to right play. I think this is to allow the chain to line itself up a bit better on the cassette as its probably impossible to set it exact? Well, thats the conclution i'v drawn? if i'm wrong, can someone correct me? No need for correction, you're absolutely right.
Cuppa Bru Posted June 14, 2013 Author Posted June 14, 2013 I think the top jockey also has a different kind of bearing/bushing than the bottom one in order to allow for the left/right movement.
Skylark Posted June 14, 2013 Posted June 14, 2013 But the 10-speed top jockey wheels have no movement these days?Can see why that would help with lining things up but maybe defeating the object of having a stiff/precise/direct RD operation?
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