Minorish problemos

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GSJ
Posts: 119
Joined: Sat Mar 31, 2012 16:04 pm

Minorish problemos

Postby GSJ » Mon Nov 05, 2012 18:13 pm

Ooookay, so.. as I'm cycling my front brake keeps rubbing against the rim! even though I aggust it about 6 times! during a 6 mile ride very very annoying. Please someone tell me how I can get rid of this problem?
One more thing, I've put a mudguard on the back wheel but that also keeps rubbing against the tyre when i go over something bumpy or just sometimes feels like rubbing against it, any fixes? or am I ****** as I've tied them down?
Many thanks as always

Woodywmb
Posts: 855
Joined: Fri Feb 13, 2004 12:19 pm

Re: Minorish problemos

Postby Woodywmb » Mon Nov 05, 2012 18:42 pm

Read up on altering both items in a bike repair manual or on the Park Tools site. Easy to do. The brakes can be adjusted six different ways (cable bolt/barrel adjuster/concave and convex washers x 2/centring screws x 2). The mudguard procedure is trial and error. Moving or bending the support arms is the simplest and often most effective way of adjustment. Post again if you can't get anywhere.

GSJ
Posts: 119
Joined: Sat Mar 31, 2012 16:04 pm

Re: Minorish problemos

Postby GSJ » Mon Nov 05, 2012 19:59 pm

The front wheel was slightly loose, I've tightened it up with a spanner (as this was my fixed gear) and loosened the barrel adjuster slightly (not sure if it moved the brake pads though?) So hopefully I won't have this problem tomorrow :P
Thank you for your help.

GSJ
Posts: 119
Joined: Sat Mar 31, 2012 16:04 pm

Re: Minorish problemos

Postby GSJ » Wed Nov 07, 2012 15:24 pm

Still have the brake problem, I can get it rolling without hitting the rim, but it seems when I cycle on bumpy tarmac it moves, also when I apply the brake lever the brake pads don't seem to retract as much as they should, leaving the pads too close to the rim.

t4tomo
Posts: 2545
Joined: Tue Mar 20, 2007 21:27 pm

Re: Minorish problemos

Postby t4tomo » Wed Nov 07, 2012 16:28 pm

the rim shouldn't move at all, unless you wheel is out of true
if its the pads not rretracting / releasing after you've applied the brakes, then either the spring bit in them has gone - which is unlikely but obvious or maybe the cable needs lubing as its sticking when you release the leveer the cable isn't sliding back. It could be the cable running at a wierd angle or it needs lubing - get a bit of light oil down between the inner and outer cable and pump the brakes a bit.
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GSJ
Posts: 119
Joined: Sat Mar 31, 2012 16:04 pm

Re: Minorish problemos

Postby GSJ » Wed Nov 07, 2012 17:02 pm

I don't think the actual rim is moving, it's either the brake pads OR the whole brake itself. Although I will try and lube the cables and see if that works.

Woodywmb
Posts: 855
Joined: Fri Feb 13, 2004 12:19 pm

Re: Minorish problemos

Postby Woodywmb » Wed Nov 07, 2012 20:51 pm

Either the pivot bolt is too tight and the tensed up spring washers are causing the unit to bind or there is dirt in the cable running to the lever. Loosen off the pivot bolt between the head tube and the top of the fork and clean and lube all the moving parts. Tighten it up without too much pressure and test. Undo the cable bolt and slide off the outer cable. Clean the inner thoroughly then cover it in grease or thick oil and replace. If the brakes don't work perfectly you haven't carried out the centring techniques I explained earlier.


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