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Old 12-13-09, 11:23 AM   #1
arctangent
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9 speed rd with 8 speed everything else

My DBR podium 1 came with Tiarga 9 speed RD but an 8 speed cassette and sora 8 speed brifters. Do you guys foresee any problems with this setup? I have a Sora 8 speed RD lying around I could put on. Or should I leave it alone?
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Old 12-13-09, 11:27 AM   #2
Tom Velo Orange
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yes. derailleurs are 'backwards compatible'- 10s' ders will work with 9/8/7/6/5 speed shifters, cassettes, chains, etc. There are exceptions here and there: Pre-97 dura ace I think, and it's generally not a good idea to mix brands- SRAM w/ shimano, campag etc.
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Old 12-13-09, 11:35 AM   #3
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Thanks. I'll leave it alone then.
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Old 12-13-09, 11:50 AM   #4
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You don't mention what kind of chain you have. If it's an eight speed you may have clearance issues with the derailleur, especially the front. If you find yourself having to constantly trim to stop the chain rubbing on the front derailleur guide then switch to a nine speed chain. The nine speed chain will work fine with an eight speed cassette.
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Old 12-13-09, 12:08 PM   #5
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Quote:
Originally Posted by strop View Post
You don't mention what kind of chain you have. If it's an eight speed you may have clearance issues with the derailleur, especially the front. If you find yourself having to constantly trim to stop the chain rubbing on the front derailleur guide then switch to a nine speed chain. The nine speed chain will work fine with an eight speed cassette.
I assume the chain is 8 speed. Don't have any problem with the chain rubbing on the front derailleur. Thanks for the tip on the 9 speed chain though. I already got an 8 speed replacement chain - haven't put it on yet, so will find out when I do I guess.
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Old 12-13-09, 12:12 PM   #6
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Not a problem. I had a 9-speed Ultegra rd installed on an 8-speed bike for several months until a piece of wire got caught in it and twisted it to death. It worked just fine until its untimely demise.
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