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Mechanical Disc Replacement Brake Cable Help

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  • September 5, 2017 at 12:06 pm #27604
    Scoob_84

    After 2 frustrating months on my hand-me-down commuter bike, I’ ve just realised that im not actually as out of shape as i first thought, or that my bike it unusually slow compared to others….  but its in fact that my brake cables need replacing as my front break doesnt release properly ans it always on.

     

    The breaks are TRP Hy/rd, and thankfully, i think they’re still in working order. But i’ve never replaced a mech disc brake cable inner and outer before. I read somewhere you need compressionless outers. Is this something unique or are all brake outers compressionless? 

    Can i just use standard ultegra level brake cables? And is 2500mm of outer enough for full outer routing from lever to brake?

    I probably need new pads too, are these standard accross all types of disc brakes?

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  • September 5, 2017 at 8:03 pm #901649
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    dunnoh

    Wiggle do a load of cheap

    Wiggle do a load of cheap brake cables and outers.  Buy the lot.   My commuter bike gets new shifters, headset, BB, cables & outers, chains, cogs etc  every year.   Its not worth the clicking, grinding and clanking and I still spend less than a car or a metro ticket

    September 5, 2017 at 12:55 pm #901647
    0
    Scoob_84

    Cheers Rod, as i suspencted

    Cheers Rod, as i suspencted and thanks for confirming. 

     

    September 5, 2017 at 12:36 pm #901645
    0
    Rod Marton

    All brake outers are

    All brake outers are compressionless – they wouldn’t work very well otherwise.

    Standard cables should be fine and 2500mm more than enough length for the outer. You can get a good estimate of the length by measuring your existing route with a tape measure.

    The important thing is to ensure friction in the cable is minimised. So avoid any tight bends. If your brakes aren’t returning properly excess friction is probably the reason, and too tight a bend the probable cause. So check your cable can move freely before you attach it to the brake.

    Pads vary between different makes, so make sure you buy some which are advertised as compatible with your brakes.

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