Originally Posted by
Roundis
I have a Shimano Deore LX (SIS 8) derailleur with a 7 speed wheel. Recently a jockey wheel came off and I wasn't able to retrieve its washers or inner metal cylinder (they're in the long grass somewhere). Both the jockey wheels are stamped NARROW. I measured the thicknesses of the wheels without washers or inner barrel and the CENTRE ON G wheel is 6.3mm and the other is 6.8mm as opposed to some new Shimano spares I have which are 9.1mm wide. I can't find any online 'narrow' jockey wheels online. Will wider ones do the job or will I run into problems?
Only issue I can think of is the bolts may be too short. You'll also likely need to adjust the gears to reflect the different centreline of the new jockey wheels. Rather than Shimano, why not get some Tacx ones with cartridge bearings, they come with a bunch of adapters and then you know the bolts will be OK.