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I’ve just bought a replacement 105 R7000 RD for my bike, as the shifting was getting pretty bad.
The price between just buying new jockeys wheels and a complete RD was about £10, after discounts/vouchers etc.

I understand that jockey wheels and cables wear out (effecting shifting), but does a RD?
Is a RD more of a: “it either works or it doesn’t” piece of equipment, or do they wear out, causing shifting problems?

Thank you.

Topic

[Cdl888]

Jumping in on this one. How

Jumping in on this one. How specific are jockey wheels on shimano mechs? I have a Sora 9 speed equipped bike on my turbo that needs new jockey wheels but I’m unsure which I need. Any suggestions?
 

[Tom_77]

I’m in a similar situation. I

I’m in a similar situation. I looked at prices and new jockey wheels were £11 and a new derailleur was £45, so I bought the jockey wheels. I have yet to fit them.

So did you manage to get a new derailleur for £21, and if so where?!?

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matthewn5 wrote:

matthewn5 wrote:

Having had problems getting into some of the smallest cogs, I dissembled my Athena rear derailleur (done about 5000 miles so far) and the pivots were completely dry. A bit of grease and a faff getting the pivot bolts back in but it does now shift cleanly down to the 12 cog.

Much more likely than ‘wear out’ is ‘get bent’, either the derailleur hanger or the jockey wheel cage can get bent through dropping the bike, parking clashes and so on, and that will affect shifting quality rapidly. I’ve a suspicion that the Athena mech has a slightly bent lower cage, because there’s too much chatter from the chain going through the jockey wheels.

Thank you ?

[matthewn5]

Having had problems getting

Having had problems getting into some of the smallest cogs, I dissembled my Athena rear derailleur (done about 5000 miles so far) and the pivots were completely dry. A bit of grease and a faff getting the pivot bolts back in but it does now shift cleanly down to the 12 cog.

Much more likely than ‘wear out’ is ‘get bent’, either the derailleur hanger or the jockey wheel cage can get bent through dropping the bike, parking clashes and so on, and that will affect shifting quality rapidly. I’ve a suspicion that the Athena mech has a slightly bent lower cage, because there’s too much chatter from the chain going through the jockey wheels.

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Chris Hayes wrote:

Chris Hayes wrote:

I have a few old derailleurs from the late 90s and early 2000s that have gotten by with a good clean every now and then (until I switched to wax rather than oil which prevents gunking up), but I’ve never known one wear out (apart from the consumables such as the jockey wheels).  Did replacing the RD fix the shifting?  Result if it did….

Thank you ?
Yes, it fixed the shifting.

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ktache wrote:

ktache wrote:

As they wear and age the bushings develop play.  Have a little go at the old and new one, you will be able to twist the older one, so the movement isn’t just in the parallelogram.

The twist is most at the cage, where you want accuracy for shifting well.

Thank you ?

[ktache]

As they wear and age the

As they wear and age the bushings develop play.  Have a little go at the old and new one, you will be able to twist the older one, so the movement isn’t just in the parallelogram.

The twist is most at the cage, where you want accuracy for shifting well.

[Chris Hayes]

I have a few old derailleurs

I have a few old derailleurs from the late 90s and early 2000s that have gotten by with a good clean every now and then (until I switched to wax rather than oil which prevents gunking up), but I’ve never known one wear out (apart from the consumables such as the jockey wheels).  Did replacing the RD fix the shifting?  Result if it did….

[Author]

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