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rear derailleur replacements

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rear derailleur replacements

Old 05-27-09, 09:17 AM
  #1  
stumpyjoe
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rear derailleur replacements

I have a shimano xtr rd-m952 rear derailleur, and need to fix the jockey wheels. They are about $30 each. There are new derailleurs to be had on ebay for about $80 or so. I am wondering which ones are compatible with my setup.

2000 stumpjumper fsr comp
xtr front and rear derailleurs
xtr cranks


The other option is to fully rebuild this one, maybe with a new spring etc. How difficult is it to replace the spring?
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Old 05-27-09, 09:25 AM
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All newer (last dozen years or so) Shimano MTB derailleurs are interchangeable. Just be certain that the cage length is the same.
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Old 05-27-09, 09:47 AM
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Originally Posted by kenhill3 View Post
All newer (last dozen years or so) Shimano MTB derailleurs are interchangeable. Just be certain that the cage length is the same.
Also be sure to match Rapid-rise (low-normal) with Rapid-rise...or you can take the opportunity to fix it and go to high-normal.
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Old 05-27-09, 09:49 AM
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Originally Posted by Wordbiker View Post
Also be sure to match Rapid-rise (low-normal) with Rapid-rise...or you can take the opportunity to fix it and go to high-normal.
Thanks. I forgot about the silly Rapid Rise thing. Never used one.
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Old 05-27-09, 10:21 AM
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factor in your time and all the parts costs and the new one might not be such a bad deal.
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Old 05-27-09, 01:07 PM
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One of the best deals out there for MTB rear derailleurs, Shimano Deore, $22 :

http://www.cambriabike.com/shopexd.asp?ID=33426

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Old 05-27-09, 05:01 PM
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how can you tell a rapid rise system? Is it the pattern on the chainrings?

I know I have a long cage based on pictures I have seen: http://www.jensonusa.com/help_desk/t...derailleur.asp

Thanks for all the input.
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Old 05-27-09, 05:12 PM
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Originally Posted by stumpyjoe View Post
how can you tell a rapid rise system? Is it the pattern on the chainrings?

I know I have a long cage based on pictures I have seen: http://www.jensonusa.com/help_desk/t...derailleur.asp

Thanks for all the input.
Rapid rise will say it on the derailleur. If you disconnect the cable the derailleur should automagically align itself on the biggest rear cog if it was rapid rise. Smallest if it's normal.

Factor in the condition of the rest of the derailleur before you spend $30/pulley.
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Old 05-27-09, 05:19 PM
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+1 on the basic Deore derailleur. A solid buy. You can't convince me to pay $80 for a derailleur - that's more than half of my bikes cost.
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Old 05-27-09, 05:54 PM
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Originally Posted by tellyho View Post
You can't convince me to pay $80 for a derailleur
Oh, come on, don't be so cheap. You could have this one for only $1200 .

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