Barrel adjuster XT rear mech

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whoof
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Barrel adjuster XT rear mech

Postby whoof » 14 Mar 2018, 9:23pm

I've bought a second-hand bike and the rear mech barrel cable adjuster is missing. The mech is a Deore XT RDM771. I've tried the adjuster from a 9 speed Deore mech but the thread is different.

Does anyone know where I can get an adjuster that might fit? I've seen one for a XT RD M760 at SJS Cycles but am unsure if it will fit.

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robgul
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Re: Barrel adjuster XT rear mech

Postby robgul » 14 Mar 2018, 9:29pm

Are you sure that the threads are different and that the missing mech's thread isn't just worn or stripped? I had to re-tap the thread on a Deore mech the other day.

To source - go to the LBS as they'll doubtless have all sorts of old worn out mechs that might be robbed.

Rob

Brucey
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Re: Barrel adjuster XT rear mech

Postby Brucey » 14 Mar 2018, 9:33pm

the reason the barrel adjuster is 'missing' is because there isn't one fitted to this model.

Image

http://si.shimano.com/pdfs/ev/EV-RD-M771-2706.pdf

Nor is the mech tapped to accept one. I suggest that you fit one inline somewhere, or use a barrel adjuster with a rubber wedge on it that is designed to fit into a cable stop; Bontrager make such things.

cheers
-------------------------------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

whoof
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Re: Barrel adjuster XT rear mech

Postby whoof » 14 Mar 2018, 9:57pm

Brucey wrote:the reason the barrel adjuster is 'missing' is because there isn't one fitted to this model.

Image

http://si.shimano.com/pdfs/ev/EV-RD-M771-2706.pdf

Nor is the mech tapped to accept one. I suggest that you fit one inline somewhere, or use a barrel adjuster with a rubber wedge on it that is designed to fit into a cable stop; Bontrager make such things.

cheers

Thanks Brucey that would explain it! I'd already bought a couple of different inline adjusters in case I couldn't a replacement for the (nonexistent) rear mech one.

pwa
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Re: Barrel adjuster XT rear mech

Postby pwa » 15 Mar 2018, 10:04am

I imagine they stopped having adjusters on the rear mechs because they were a bit vulnerable to damage, but it is a pain for those of us who never broke them. I managed to fit an inline adjuster (possibly modified, I can't remember) into the recess on the mech, and got it to work. It sticks out a bit but I've not had any issues with it.

pete75
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Re: Barrel adjuster XT rear mech

Postby pete75 » 15 Mar 2018, 10:11am

pwa wrote:I imagine they stopped having adjusters on the rear mechs because they were a bit vulnerable to damage, but it is a pain for those of us who never broke them. I managed to fit an inline adjuster (possibly modified, I can't remember) into the recess on the mech, and got it to work. It sticks out a bit but I've not had any issues with it.


MTB type derailleurs are designed to be used with flat bar gear levers which usually incorporate a cable adjuster. No point in having one at both ends is probably the thinking.

pwa
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Re: Barrel adjuster XT rear mech

Postby pwa » 15 Mar 2018, 10:16am

pete75 wrote:
pwa wrote:I imagine they stopped having adjusters on the rear mechs because they were a bit vulnerable to damage, but it is a pain for those of us who never broke them. I managed to fit an inline adjuster (possibly modified, I can't remember) into the recess on the mech, and got it to work. It sticks out a bit but I've not had any issues with it.


MTB type derailleurs are designed to be used with flat bar gear levers which usually incorporate a cable adjuster. No point in having one at both ends is probably the thinking.


Yes. I suppose my problem is that I put components with other components Shimano didn't expect me to. I also have the down tube adjusters, but I prefer to have two adjusters in there. I bet I could make do with one if I spent more time getting the tension perfect on initial installation.

bikepacker
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Re: Barrel adjuster XT rear mech

Postby bikepacker » 15 Mar 2018, 12:09pm

I use Jagwire minis. They work okay.
There is your way. There is my way. But there is no "the way".

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Neilo
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Re: Barrel adjuster XT rear mech

Postby Neilo » 16 Mar 2018, 12:49pm

If it aint broke, fix it til it is.

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Gattonero
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Re: Barrel adjuster XT rear mech

Postby Gattonero » 16 Mar 2018, 1:11pm

One good thig to do, is to lubricate the threads while fitting those adjusters. After a while they seize up, thus becoming a "cable stops" rathen than "adjusters"
It is by riding a bicycle that you learn the contours of a country best,
since you have to sweat up the hills and coast down them.
Thus you remember them as they actually are...

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Mick F
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Re: Barrel adjuster XT rear mech

Postby Mick F » 16 Mar 2018, 3:59pm

whoof wrote:I've bought a second-hand bike and the rear mech barrel cable adjuster is missing. The mech is a Deore XT RDM771. I've tried the adjuster from a 9 speed Deore mech but the thread is different.

Does anyone know where I can get an adjuster that might fit? I've seen one for a XT RD M760 at SJS Cycles but am unsure if it will fit.

Get these.
http://www.wiggle.co.uk/token-tk684-all ... -grappler/

I bought a pair in Red, but only needed one so I have a spare.
This is mine on the Moulton with an XT rear mech.
IMG_0356.JPG
Yes, that's correct.
10sp cassette with a SA 3sp.
Mick F. Cornwall

bikepacker
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Re: Barrel adjuster XT rear mech

Postby bikepacker » 17 Mar 2018, 9:37am

There is your way. There is my way. But there is no "the way".