Mountain Bikes · Public discussion

Hydraulic Discs

Started by T_blood · · Last activity · 7 posts · 865 views

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Mountain Bikes
Published
26 May 2003
Last activity
28 May 2003
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T_blood
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  1. Quick question....it seems my front disc brake lever isn't retracting quite like it should. After I
    apply the brake the lever likes to stay put. Would this be air in my lines causing it?

  2. Your not running SRAM shifters and it's catching on the shifters are you ?

    Cheers

    Chris

    --
    ===========================================================

    Live fast, crash faster

    mtbbikes.co.ukmtbbikes.co.uk

  3. "> Your not running SRAM shifters and it's catching on the shifters are you ?

    Quoted message said:


    Cheers

    Chris

    I am running SRAM shifters but it isn't catching. It just lacks it's rebound after the brakes are
    applied. I can lightly return it to normal when I think of it during the ride. It just feels as if
    there is no force to return it naturally. The brakes still work perfectly fine however. By the
    way..I am running Giant MPH hydraulics...Mike

  4. Sorry but I can't be of any more help, what was happening with my Hope Mini / SRAM Rocket setup was
    the bottom of the break lever (not the bit you hold but the hinge bit) was catching on the cable
    extension of the SRAM shifter ... thus you could pull the lever in an it would lack all kind of
    rebound, it wasn't till I noticed the mark on the shifter that the problem was diagnosed ...

    Anyway that wasn't your problem .. sorry I can't help any more

    Thanks

    Chris

    --
    ===========================================================

    Live fast, crash faster

    mtbbikes.co.ukmtbbikes.co.uk

  5. "T_Blood" <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:


    "> Your not running SRAM shifters and it's catching on the shifters are


    you

    Quoted message said:

    ?

    Quoted message said:


    Cheers

    Chris

    I am running SRAM shifters but it isn't catching. It just lacks it's


    rebound

    Quoted message said:

    after the brakes are applied. I can lightly return it to normal when I


    think

    Quoted message said:

    of it during the ride. It just feels as if there is no force to return it naturally. The brakes
    still work perfectly fine however. By the way..I am running Giant MPH hydraulics...Mike

    I'm not familiar with those brakes but there is usually a spring return in the master cylinder and
    that may be broken. Does the brake work otherwise? Might be time to think about an upgrade to Hope
    Mini's or Hayes.

    Mike

  6. Quoted message said:
    Quoted message said:


    I am running SRAM shifters but it isn't catching. It just lacks it's


    rebound

    Quoted message said:

    after the brakes are applied. I can lightly return it to normal when I


    think

    Quoted message said:

    of it during the ride. It just feels as if there is no force to return it naturally. The brakes
    still work perfectly fine however. By the way..I am running Giant MPH hydraulics...Mike

    If they are clones of Magura's "wonderful" design. The o-rings may be swelled in the master
    cylinder, causeing the piston to stick. Sometimes the return spring gets tired also and needs to be
    stretched.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

  7. Quoted message said:

    Would this be air in my lines causing it?


    No, air will just give you a soft lever or no lever if there is enough air. Sticky master (this
    would most likely give you some brake drag) Bent lever(this would give you brake drag until the pads
    wear down a little) Pivot seized or in some sealed hydraulic systems(from what l have read) needs
    more fluid or the pads adjusting(in which case it is working just fine and just wants some tlc for
    you lol) My guess is the last one if the brakes are working fine otherwise. But being that is "only
    the front brake", you had better get it fixed. Hope this helped, this is even harder than trying to
    fix something over the phone lol

    every time l see the name Magura l think of this page

    Quoted message said:

    If, for example, the diameter of the master cylinder is half as big as the diameter of the slave
    cylinder, the force is quadrupled (however, the distance moved is reduced by 50%).


    magura.dehydraulik wie.htm (however, the distance moved is reduced by
    *75%*). maybe they will fix it one day

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