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Old 03-10-08, 05:54 PM   #1
wwisconsin
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Fractured rear derailler Shimano RSX

I need to find and order a new rear derailler for my old Trek 1200 Road bike. It has (had) a Shimano RSX. There are 8 sprockets on the back wheel. I called Bike Nashbar just now and they said that they don't sell any rear deraillers for an 8 sprocket wheel.

Any suggestions?

Thanks
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Old 03-10-08, 06:02 PM   #2
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The person at Nashbar is just wrong. Any rear derailer will work. The shifter controls how much cable pull or release to index the shifting, and the limit screws control how far the derailer moves. Best bet is to get a 5600 105 derailer. The derailer doesn't care. I'm using one with a 7-speed RSX shifter with no problems.
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Old 03-10-08, 06:04 PM   #3
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They lied.

Any 8-9-10 modern Shimano indexed speed rear derailleur will work.
For example, Tiagra:
http://www.nashbar.com/profile.cfm?c...%20Derailleurs
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Old 03-10-08, 06:05 PM   #4
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There are some derailleur that won't work but any Shimano 9-speed derailleur will work, and a 10-speed Shimano derailleur will probably work.

Al
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Old 03-10-08, 06:08 PM   #5
wwisconsin
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Why a RD 5600 105 derailer?

Okay. That makes sense that the derailer doesn't care. Why did you recommend the 5600 105 derailer? It looks to be about $75 to $90. Obviously I'm a newbie, but just want to make sure I am selecting the correct part. Could I spend less, or is this the "minimum" quality level?
Thx
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Old 03-10-08, 06:15 PM   #6
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Even Shimano Sora for $20 will work. And it even says 8-speed.
http://bike.shimano.com/catalog/cycl...=1205194383246

Here it says
http://www.niagaracycle.com/product_...oducts_id=6229
Shimano RD-3300 Sora Rear Derailleur 8 Speed SS Silver

but you can see RSX in the picture:

Last edited by Barabaika; 03-10-08 at 06:22 PM.
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Old 03-10-08, 06:17 PM   #7
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How about-
http://www.nashbar.com/profile.cfm?c...%20Derailleurs
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Old 03-10-08, 08:26 PM   #8
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Quote:
Originally Posted by wwisconsin View Post
Okay. That makes sense that the derailer doesn't care.
Almost, not quite. You need a Shimano RD, 8, 9, and 10-speed Shimano derailleurs all have the same throw ratio except for pre 9-speed Dura-Ace.
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Old 03-10-08, 08:52 PM   #9
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Originally Posted by wwisconsin View Post
Okay. That makes sense that the derailer doesn't care. Why did you recommend the 5600 105 derailer? It looks to be about $75 to $90. Obviously I'm a newbie, but just want to make sure I am selecting the correct part. Could I spend less, or is this the "minimum" quality level?
Thx
I was basing the recommendation on performance value. For dirt cheap replacement, there is Shimano 2200. No name, just the product number.
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Old 03-11-08, 09:47 AM   #10
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If it's a triple, go with the $20 Deore derailleur on Nashbar. No need to put a 105 on there, IMHO.
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