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Brakes working fine until...

andy83andy83 Posts: 1,558
edited December 2009 in The workshop
My brakes were working fine last night - well apart from the pads having no life left in them whatsoever but the mechanism of them was fine

today i replaced the pads which work a treat however every time i centre them and pull the brakes one of the pads just sits on the rim

as i say the cables are fine and working yesterday, with the pads touching the wheel then moving away.

due to the amount the pads had worn down i had to adjust the cable tension. however it seems now how ever tight i get it they just never return to normal postion, i think its always the right side one that sits on the rim

do the pads just need wearing in or is it summin to do with the cable tension

as i say cables seem fine, just very annoying and cold :(

edit. they are cantalever brakes, (think thats right on a road bike anyway)

Posts

  • iain_jiain_j Posts: 1,941
    Have a play with the little adjustment screws on each arm (should be near the pivot - just below the pivot in the pic below). Screwing it inwards will increase the spring tension, moving the pad away from the rim, and vice-versa. Do both sides til they're balanced.

    1249383140454-ubxkpk4bpc06-500-90-500-70.jpg
  • andy83andy83 Posts: 1,558
    ah thanks

    ill have a go tomo, got no light in garden and its bloody cold to be standing around. was hoping it was summin relatively easy

    just annoyed the hell out of me earlier then it started to get dark

    hopefully be able to sort it tomo
  • elcanielcani Posts: 280
    I've found adjusting these can be a little bit tricky, but a little tweaking and the brakes will balance - just turn the screws a little at a time.
  • iain_jiain_j Posts: 1,941
    ...and after each adjustment pull the brake lever a couple of times to settle it all. Bit of a pain when you get them spot-on, then after one pull of the lever they're skew-wiff again (writing from experience!)
  • deswellerdesweller Posts: 5,271
    There was another lad on here with a similar problem a couple of days ago. He found that one of his pads was a little low, so it was getting wedged beneath the rim.

    Make sure that your pads are landing square with the rim surface and are well positioned on the braking surface.
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  • andy83andy83 Posts: 1,558
    thanks for all your replies

    as for the one where the pad is a little low that could be the problem as when they werent on the rim they seemed to release

    hopefully i can get sorted first thing to let me go out for a nice crisp morning ride with brakes :D
  • andy83andy83 Posts: 1,558
    thanks for all help, found the little screw thing and after a bit of playing it worked a treat, held up great over 22 mile ride in crisp winter weather

    for some reason i ended up taking the whole caliper off cos i messed the barrel adjuster off, only to realise there was no need to but at least i have a better understanding of it all now :D
  • iain_jiain_j Posts: 1,941
    While you had the brake arm off did you notice three (or so) holes alongside the pivot on the fork? The end of the spring locates in one of these - putting it in a higher one increases the tension too if it's way out of adjustment. Easier to use the adjusting screws though.
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