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PostPosted: Sun Apr 06, 2008 11:42 am 
Dirt Disciple

Joined: Thu May 31, 2007 8:17 pm
Posts: 86
Location: Wales/London
I have a basic but quite nice steel framed Holdsworth road bike that suffers from pronounced fork judder under braking. Has anyone here got any suggestions as to solutions for this problem?

Cheers,

Adam


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PostPosted: Sun Apr 06, 2008 1:02 pm 
Devout Dirtbag

Joined: Sat Sep 30, 2006 9:14 pm
Posts: 135
Location: Glos
Hi mate,

Does it happen at one particular spot on the wheel when braking - could be due to a rim joint if so.

Mavics are often finished down at the join so it does not occur when braking - one of my old bikes did this for a while but over time the braking actually wears the joint edge down too so is only a temporary problem.

Hope this is of help!


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PostPosted: Sun Apr 06, 2008 3:40 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
Check that the brake callipers aren't loose. It might be a bit of play in the headset too.


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PostPosted: Mon Apr 07, 2008 10:24 am 
Dirt Disciple

Joined: Thu May 31, 2007 8:17 pm
Posts: 86
Location: Wales/London
Thanks for the tips - will give the headset and brakes a good going over!

Cheers,

Adam


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 Post subject: judder
PostPosted: Mon Apr 07, 2008 5:07 pm 
Retro Guru
User avatar

Joined: Thu Oct 18, 2007 9:46 am
Posts: 328
If you make sure the pads brake shoes are tight and thats not the prob, I would give the pads a rub with emery paper and check the rims are clean. Bits of rim get stuck in the pads and sometimes makes them judder. Also check the pads angle to the rim. They should be perfectly flat or, if anything a bit of toe-in - that sometimes does it.


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PostPosted: Sun Apr 13, 2008 9:05 pm 
Dirt Disciple

Joined: Thu May 31, 2007 8:17 pm
Posts: 86
Location: Wales/London
I changed brake pads and set them really carefully to be flat against the rim and the fork judder disappeared! I guess it shows how even tough materials like steel have their weaknesses- before the fork blades were rippling like mad, now they are solid and steady.

Thanks for the tips,

Adam


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PostPosted: Mon Apr 14, 2008 8:26 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
It's not weakness- everything flexes a little. You just have to set things up to minimise flex.

You could have less flex, but then it would weigh a ton.


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