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Old 07-17-07, 11:17 PM   #1
BikeManDan
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Whats up with this XTR rear derailleur without a barrel adjuster

Was making my weekly rounds at the dump and came across this XTR derailleur. Diamond in the rough :cool:



No barrel adjuster though. What gives? Did this model just not have any? Did Shimano assume you had one on your shifter? Kind of a bold assumption given that most of Shimano's MTB brifters do NOT have barrel adjusters for the rear derailleur. I do think their pod shifters do though and the XTR shifter pod does.

One of the jockey wheels teeth are pretty worn too. Any source for a single replacement jockey wheel?
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Old 07-18-07, 03:49 AM   #2
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8spd

XTR M-951 rapid rise
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Old 07-18-07, 05:29 AM   #3
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Perhaps the original owner salvaged the adjuster before tossing the rest. I'll often salvage useable parts from otherwise worn out components.

I assume the derailleur was in the trash for a reason.
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Old 07-18-07, 05:43 AM   #4
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Soil Sampler has it right, it's a Rapid Rise. The way the cable loops in doesn't lend itself well to having an adjuster, I have a barrel type mounted in line (Cross-Check with barcons).
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Old 07-18-07, 06:21 AM   #5
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The previous owner probably wore the barrel adjuster out trying to keep the derailleur quiet. Seriously, that particular version of XTR Rapid Rise is one of the most troublesome RD's ever. My brother in law had one, it was a constant PITA. Later, when Shimano re-introduced Rapid Rise ('02, '03?), I read an interview where one of the top Shimano guys admitted that with the earlier version of Rapid Rise, about the best you could hope for was to keep it in adjustment for the duration of a race-

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Old 07-18-07, 07:17 AM   #6
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Originally Posted by well biked View Post
The previous owner probably wore the barrel adjuster out trying to keep the derailleur quiet.
Interesting. Don't know my vintage, it was NOS in my LBS's pile of acquired parts, but it has performed very well, in fact I don't think I've had to adjust it since the initial install ( thankfully, since the barrel adjuster on the downtube boss is a ***** to turn ).
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Old 07-18-07, 07:33 AM   #7
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Interesting. Don't know my vintage, it was NOS in my LBS's pile of acquired parts, but it has performed very well, in fact I don't think I've had to adjust it since the initial install ( thankfully, since the barrel adjuster on the downtube boss is a ***** to turn ).
Yeah, my brother in law had constant problems with his, it wouldn't stay in proper adjustment more than a few miles at a time. We tried everything (clean, lube, new cables, expensive cables, Avid Rollamajig, etc.), but the thing was still a constant headache. It was probably made worse because his bike was a full suspension model. But when I read the article where the Shimano guy admitted the derailleurs were inherently very troublesome, I at least felt better about it. My brother in law has since switched to SRAM, swears he'll never go back to Shimano. Personally, I really like the concept of Rapid Rise for mountain biking, next time I buy an mtb RD it will probably be one of the (hopefully) improved Shimano Rapid Rise models. If your older version works well, count your blessings.
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Old 07-18-07, 03:04 PM   #8
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Originally Posted by HillRider View Post
Perhaps the original owner salvaged the adjuster before tossing the rest. I'll often salvage useable parts from otherwise worn out components.

I assume the derailleur was in the trash for a reason.
To assume that everything at the dump is garbage, is a grave misjudgement. Our society throws away all manner of useful goods for god knows what reasons. I happened upon this derailleur still attached to a Diamondback frame that someone considered junk.
The only problem with this derailleur is the worn jockey wheel and that can't be more than a few bucks
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Old 07-18-07, 05:11 PM   #9
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I seem to recall barrel adjusters on the integrated shifter/brake levers from this era...
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Old 07-18-07, 06:38 PM   #10
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No barrel adjuster though. What gives? Did this model just not have any?
Yep. See here: http://members.home.nl/children-of-the-korn/XTR950.htm
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