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Lateral play in tension and jockey pulley.

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Lateral play in tension and jockey pulley.

Old 08-06-09, 12:12 PM
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Danielle
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Lateral play in tension and jockey pulley.

I have an ultegra rear derailer that has some lateral movement in the tension and jockey pulleys. Is this normal? I have no shifting problems.
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Old 08-06-09, 12:16 PM
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Originally Posted by Danielle View Post
I have an ultegra rear derailer that has some lateral movement in the tension and jockey pulleys. Is this normal? I have no shifting problems.
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Old 08-06-09, 12:20 PM
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There is supposed to be some side play to facilitate moving from cog to cog (it's normal).
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Old 08-06-09, 12:38 PM
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Originally Posted by mayukawa View Post
There is supposed to be some side play to facilitate moving from cog to cog (it's normal).
On both pulleys?
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Old 08-06-09, 03:25 PM
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Is it a new Ultegra RD? The stock pulley wheels have very little lateral play, but I know many of the after-market pulley wheels have quite a bit more and many give you washers to adjust the amount of play. I think on the Ultegra only one of the pulley wheels have sealed ball bearings, while the other does not, so perhaps that's why the amount of side play is different? Just an educated guess, as I don't have Ultegra.
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Old 08-06-09, 03:30 PM
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Yes. I've tuned a lot of these little gems and they all do that.
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Old 08-06-09, 05:14 PM
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I was mainly wondering if both pulleys should have some play. They are stock pulleys.I know the one near the casette should have a little play fo shifting preciseness, but was not aware if the lowest pulley should have any play. That is what I was most concerned about.
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Old 08-06-09, 05:24 PM
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The top one has play, the bottom one usually doesn't
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Old 08-06-09, 05:35 PM
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Then I guess my lower pulley is toasted. It has play. I have not experienced shifting problems as of yet. What should I do?
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Old 08-06-09, 05:39 PM
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Originally Posted by Danielle View Post
Then I guess my lower pulley is toasted. It has play. I have not experienced shifting problems as of yet. What should I do?
nothing.
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Old 08-06-09, 05:40 PM
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Originally Posted by Danielle View Post
Then I guess my lower pulley is toasted. It has play. I have not experienced shifting problems as of yet. What should I do?
It's likely that the idle pulley even being loose won't affect the shifting. The chain line down there is not quite as crucial. If it starts giving you problems, order a new one and replace it. Should be able to get a replacement pulley and bushing.
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