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Old 08-25-09, 05:03 PM   #1
bbtm
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Specialized Rockhopper Comp Disc 29 - Switching shifters?

I have an 09 Specialized Rockhopper Comp Disc 29 that I got back in June. I've been riding it as much as I can but all the other bikes I've owned have had the Shimano Rapidfire style shifters - where you use the thumb and index finger to shift up and down.

The new bike, has "SRAM X-4, 8-speed trigger" - which uses the thumb for shifting up and down. I've tried to get used to it, but I just can't - I prefer the other style. The rear derailleur is a "SRAM X-5, med. cage".

I've been looking at replacing shifters, but can't seem to find which SRAM shifter I can use to replace the ones I have - if SRAM does in fact make one like I'm after.

Can someone point me in the right direction?
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Old 08-25-09, 05:42 PM   #2
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You will need to replace both derailer and shifter. Your current X.5 derailer requires a SRAM shifter using the 1:1 pull ratio, and to my knowledge that means a thumb-thumb shifter.

I'd look into Shimano's new SLX line. An SLX rear derailer and a set of SLX shifters would get you the thumb-finger shifting you are after. You might be able to find the parts on eBay for $100 or so.
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Old 08-25-09, 09:49 PM   #3
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So I can use a front SLX shifter with my current "Shimano Altus, 34.9mm clamp, top swing" derailleur? If I'm replacing everything else, I might as well do the front derailleur while I'm at it.

Looks like I'd be getting the following:

Shift levers: SL-M660
Rear derailleur: RD-M662-SGS
Front derailleur: FD-M660 (or FD-M660-E).

However I noticed my rear cassette is only 8 - the RD-M662-SGS is 9. I'd need the CS-HG80 cassette sprocket as well. Will that fit on the back? Are the proper mounting holes available for derailleurs on the frame?
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Old 08-25-09, 09:53 PM   #4
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That derailluer will work fine. You don't need to get more speeds, though you can. The 9 speed derailleur WILL work with the 8 speed cassette. I'm running a 9 speed xt on a 7 speed.
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Old 08-26-09, 04:50 AM   #5
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Sorry. I missed your statement about having an 8-speed in your original post. Don't buy the SLX shifters. They will not work for an 8-speed rear-end. My mistake in suggesting them.
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Old 08-26-09, 11:26 PM   #6
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Could I still install a CS-HG80 onto my rear wheel in place of the existing sprocket?
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Old 08-27-09, 12:09 AM   #7
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Sure, but isn't the HG-80 a 9-speed cassette? You'll need to install a 9-speed shifter and a RD that can handle 9 speeds as well, and a 9-speed chain.
IMHO, going to 9sp from 8sp doesn't get you anything really useful in mountain biking, and the 8sp stuff is more robust and cheaper. Your choice, though.
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Old 08-27-09, 07:36 AM   #8
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You could try some twist shifters.
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