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Shimano Jockey Wheels

Old 05-29-22, 12:12 PM
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gkamieneski
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Shimano Jockey Wheels

I am going to need to replace he jockey wheels for my Shimano 105 10 speed rear derailleur (RD5700) soon. I have heard mention of a Shimano jockey wheel compatibility chart but have never seen one. As long as I am replacing them, I would like to use the Dura Ace 10 speed variety (7900). One retailer has told me that the Dura Ace version will not fit the 105 RD, and when I look at Shimano's exploded views I note that the pulley bolts are different part numbers between 5700 and 7900, so I am inclined to agree.

Does anyone have a contrary viewpoint or have you been able to use Dura Ace 7900 pulleys with a 5799 rear derailleur?
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Old 05-29-22, 02:21 PM
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Part number may be different, but what are the specs of the actual parts? If they match, then it might be a viable option to try out.
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Old 05-29-22, 03:39 PM
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Originally Posted by Troul View Post
Part number may be different, but what are the specs of the actual parts? If they match, then it might be a viable option to try out.
^^^this

The difference may only be the 105 is a regular steel bolt and the DA is some alloy. I'd see if anyone has the DA bolts and can measure them for you.
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Old 05-29-22, 03:53 PM
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These are all you need and will fit the 5700. They have sealed bearings so maintenance free. Unfortunately, they are frequently out of stock but maybe you'll get lucky soon. Velo Orange Sealed Bearing Universal Jockey Wheels (velo-orange.com)
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Old 05-29-22, 04:37 PM
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Do know that most all cartridge bearinged pulleys have no float in the upper pulley. This float, which OEM Shimano has in the guide pulley, is a part of their system design. It allows for a quieter chain run and absorbs some tolerance/run out that a multi piece system can have. At least the linked pulleys have plastic teeth. Many aftermarket pulleys have Al teeth and further chain run noise. Generally Shimano pulleys, of the same cog count spec, are interchangeable if they also have the same tooth count. Different diameter/tooth counts can change the large rear cog capacity, (can you say "pulley knock"). BTW the DA guide pulley is one of the few with real balls and also having float. I have installed many on other levels of Shimano ders with great results. Andy
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Old 05-29-22, 05:08 PM
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^^^^Yeah, I was a little worried about the lack of float when I first installed these, actually 2 sets of the old Tacx pulleys but look almost identical and 1 of the VO versions. I've used them on three different versions of Ultegra derailleurs, 9 & 10 speed, and noticed zero difference in shifting, absolutely none and that was with slightly worn and near ready for replacement chain and cassettes. Can't speak for every setup but no problems for me.
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Old 05-29-22, 08:52 PM
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Originally Posted by Andrew R Stewart View Post
Do know that most all cartridge bearinged pulleys have no float in the upper pulley. This float, which OEM Shimano has in the guide pulley, is a part of their system design. It allows for a quieter chain run and absorbs some tolerance/run out that a multi piece system can have. At least the linked pulleys have plastic teeth. Many aftermarket pulleys have Al teeth and further chain run noise. Generally Shimano pulleys, of the same cog count spec, are interchangeable if they also have the same tooth count. Different diameter/tooth counts can change the large rear cog capacity, (can you say "pulley knock"). BTW the DA guide pulley is one of the few with real balls and also having float. I have installed many on other levels of Shimano ders with great results. Andy
Shimano states that the 7900 has sealed bearings in both pulleys. Not sure how they would get that guide pulley to "wobble".
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Old 05-30-22, 08:26 AM
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Shimano DA's guide pulley has a unique double row bearing with the bearing tracks wider than the usual single row radial contact type of bearing (which is what is in the tension pulley). Unlike those common radial single row bearings we all know and love this guide pulley requires the spec end caps to be in place to keep the outer race/track over the inner one. It's a pretty cool piece of engineering. Andy
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