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rear derailleur pulley replacement

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rear derailleur pulley replacement

Old 10-25-07, 08:19 PM
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rear derailleur pulley replacement

I have a shimano 7700 dura ace rear derailleur. I need to replace a pulley in it. It's the one with a bit of play.

Should I buy a DA replacement set? or go with performance forte pulleys? Will there be any issues if I go with the forte set?
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Old 10-25-07, 08:21 PM
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I've heard mixed reviews on the Forte. AFAIK, derailleur pulleys are derailleur pulleys. I don't think you need to shell out for DA.
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Old 10-25-07, 08:24 PM
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I was thinking the same thing. I looked around and saw crazy stuff like ceramic bearing pulleys and such.... I def. don't need that, but it'll be good to save some $. I just shelled out a bunch for winter cycling clothing
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Old 10-25-07, 09:27 PM
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Most Shimano derails have a floating top pulley. The Fortes don't seem to offer a floating pulley.
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Old 10-25-07, 10:00 PM
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Originally Posted by availpunk9
Should I buy a DA replacement set? or go with performance forte pulleys? Will there be any issues if I go with the forte set?
I've had good luck with the Tacx pulleys with cartridge bearings on Ultegra and XT deraillures.

They're about $10 a pair.
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Old 10-26-07, 03:41 AM
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Be sure you get a replacement pulley with the standard float. There were a lot of aftermarket pulleys in the past (Bullseye was one make) that were fixed and setting up index shifting with them was very tricky as the alignment had to be perfect.

Any model Shimano top pulley with the same number of teeth should be just fine.
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Old 10-26-07, 04:06 AM
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Originally Posted by availpunk9
I have a shimano 7700 dura ace rear derailleur. I need to replace a pulley in it. It's the one with a bit of play.

Should I buy a DA replacement set? or go with performance forte pulleys? Will there be any issues if I go with the forte set?
When you say its the pully with a bit of play, do you mean the side to side float that's supposed to be in the upper pully or some other form of play?
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Old 10-26-07, 04:18 AM
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Originally Posted by maddmaxx
When you say its the pully with a bit of play, do you mean the side to side float that's supposed to be in the upper pully or some other form of play?
The intentional side-to-side play is exactly what I mean. Shimano calls this "Centeron" and it corrects for minor derailleur misalignment and minor spacing differences in the cassette. Index shifting is difficult to impossible to make accurate and quiet without it.
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