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 Post subject: Squealing V-brakes...
PostPosted: Sun Jan 21, 2007 8:13 pm 
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Joined: Sun Jul 09, 2006 11:07 pm
Posts: 1593
Location: muddy fields, usually
...are driving me nuts!

The Yo has a set of XT V-brakes on and whilst the rear one is fine, the front one squeals like a beeyatch at anything more than the lightest braking pressure. Have cleaned the rim with degreaser (Mavic 231CD), taken off the top surface of the pads with sandpaper, toed in the pads, toed out the pads, set the pads flat - nothing works!

Anthing I can do or is this just a known issue, and I should stop being a girl and just put cantis on her? ;) :lol:


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 Post subject:
PostPosted: Sun Jan 21, 2007 8:23 pm 
East Midlands AEC
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Joined: Thu Oct 05, 2006 7:45 pm
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Location: Derby, UK
not sure if it's to everyone's taste but I get some wet mud off the ground and rub it all the way round the rims - find it does the trick normally.


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 Post subject:
PostPosted: Sun Jan 21, 2007 8:38 pm 
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Location: Aberdeen, Scotland
Have you tried just not pulling the lever?

:wink:


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 Post subject:
PostPosted: Mon Jan 22, 2007 12:51 am 
Gold Trader
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Joined: Sat Jul 29, 2006 11:14 pm
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Location: Somerset
XT's and the like have that linkage thing to keep the pad parallel to the rim sidewall.

I found that the linkage develops slack in it and you need masses of toe in to compensate. Worked on the ones on my Orange anyway, they are running about 2.5mm of toe in but that reduces to almost nothing when actually braking a turning wheel.

Can't hurt to try, OH! I'm running them on Mavic X717sup's but before they were on X517 CD's with Aztec's, no squeeky here :wink:


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 Post subject:
PostPosted: Mon Jan 22, 2007 8:57 am 
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Location: North East Scotland (Aberdeen)
Stick Legs wrote:
XT's and the like have that linkage thing to keep the pad parallel to the rim sidewall.

I found that the linkage develops slack in it and you need masses of toe in to compensate.


My solution to this is to put a zip tie round the rattly linkage and the arm - this helps a lot. :lol:


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 Post subject:
PostPosted: Mon Jan 22, 2007 10:18 am 
BoTM Winner
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Joined: Thu Jan 19, 2006 1:23 pm
Posts: 2765
Location: NW England
Yeah I remember the zip-tie trick. You could also buy a tune-up kit which consisted of some thin spacers which fitted between the linkages. Helped a bit but not sure if you can still buy it.


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 Post subject:
PostPosted: Mon Jan 22, 2007 10:40 am 
Gold Trader / PoTM Winner / RB Rider
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Location: kent
The tune up kit was given free as Shimano realised they had a problem . unfortunately , most dealers sold it .


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 Post subject:
PostPosted: Mon Jan 22, 2007 11:35 am 
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Location: muddy fields, usually
Cheers for the replies guys! We have some small shims here at work so I'll certainly give that a shot... Failing that, a zip-tie sounds faster and cheaper! :lol:


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 Post subject:
PostPosted: Mon Jan 22, 2007 8:11 pm 
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Joined: Fri Apr 28, 2006 8:42 pm
Posts: 783
Location: Brighton
There's also two other things to check;

Are the bolts holding the arms to the brake bosses on tightly?

Are the pads compliant in rotation terms with the rim?


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 Post subject:
PostPosted: Tue Jan 23, 2007 5:21 pm 
retrobike rider
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Joined: Wed Jan 04, 2006 10:12 pm
Posts: 2993
Location: Northumberland
Its not just XT, my Arch Supremes have started squeeling. Theres no play in the arms or linkage, tried everytthing, just decided to ride it :lol:
Its no worse than a lot of disc brakes(Hope). In the summer, deer seemed strangely attracted to the sound 8)

The XT did have a shim repair kit, which did work. I've seen plenty using zip ties though


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