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Disc Brakes...

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Mountain Bikes
Published
7 July 2003
Last activity
11 July 2003
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Tj
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  1. I'm looking for a good hydraulic disc brake system. I do pretty aggresive cross country riding,
    meaning I look for very steep very technical trails to ride both up and down and thow in the
    moderate connecting trails. I'm curently using the Shimano brakes that came with the 2002
    Specialized Enduro, I believe they are the M525 hydraulic disk brakes. The problem is that as the
    pads wear, the 2 pistons don't move in the same amount so 1 pad will start rubbing and in turn
    sqeel. They also start to fade a bit after a long steep decent. I'm sure I would like the Shimano
    XT, or some Hayes equivelent disk brakes but I was wondering if there were some different brands
    like Grimeca, Hope, or Magura that someone would have some input on. Input on Shimano and Hayes
    would also be welcome.

    Thanks for any help on this topic.

    TJ

  2. In article <[email hidden]>, [email hidden] says...

    Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty aggresive cross country riding,
    meaning I look for very steep very technical trails to ride both up and down and thow in the
    moderate connecting trails. I'm curently using the Shimano brakes that came with the 2002
    Specialized Enduro, I believe they are the M525 hydraulic disk brakes. The problem is that as the
    pads wear, the 2 pistons don't move in the same amount so 1 pad will start rubbing and in turn
    sqeel. They also start to fade a bit after a long steep decent. I'm sure I would like the Shimano
    XT, or some Hayes equivelent disk brakes but I was wondering if there were some different brands
    like Grimeca, Hope, or Magura that someone would have some input on. Input on Shimano and Hayes
    would also be welcome.

    Thanks for any help on this topic.

    TJ

    I would suggest same better aftermarket pads from Koolstop or EBC before you go throwing out those
    brakes. I have Hayes but I can't say they are really that much better than Shimano Deore. In fact I
    think the deore lever is much better designed.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

  3. "Chris Phillipo" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    In article <[email hidden]>, [email hidden] says...

    Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty


    aggresive

    Quoted message said:
    Quoted message said:

    cross country riding, meaning I look for very steep very technical


    trails to

    Quoted message said:
    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem


    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:
    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit


    after a

    Quoted message said:
    Quoted message said:

    long steep decent. I'm sure I would like the Shimano XT, or some Hayes equivelent disk brakes
    but I was wondering if there were some different brands like Grimeca, Hope, or Magura that
    someone would have some input


    on.

    Quoted message said:
    Quoted message said:

    Input on Shimano and Hayes would also be welcome.

    Thanks for any help on this topic.

    TJ

    I would suggest same better aftermarket pads from Koolstop or EBC before you go throwing out those
    brakes. I have Hayes but I can't say they are really that much better than Shimano Deore. In fact
    I think the deore lever is much better designed.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

    I've just put another new set of EBC Green in and I'm sure people think that it's a hog-on-fire
    coming up behind them. The squealing is terrible! LOL! I'll let them bed in a little before I reach
    for the oil can. Good pads won't always solve the problem. But better brakes probably won't either.
    Water certainly doesn't help. I don't know a great deal about the brakes but would get them checked
    - it doesn't sound right that one piston is moving less than the other.
    --
    Westie

  4. "> I'm looking for a good hydraulic disc brake system. I do pretty aggresive

    Quoted message said:

    cross country riding, meaning I look for very steep very technical trails


    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem is that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit after


    a

    Quoted message said:

    long steep decent.

    I'm not so sure disc are a good idea for long steep descents. I have them (Hayes) and frankly the
    small rotors don't have enough surface area to dissipate the heat. They burn up while the rim brake
    riders have no problem. This seems to be the one (infrequent at least in my case ) downside with
    discs. Once they get superheated they seem to severely loose effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

  5. On Mon, 7 Jul 2003 22:57:13 -0400, "John Harlow" <[email hidden]> wrote:

    |
    |"> I'm looking for a good hydraulic disc brake system. I do pretty
    |aggresive
    |> cross country riding, meaning I look for very steep very technical trails
    |to
    |> ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    |> brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    |> brakes. The problem is that as the pads wear, the 2 pistons don't move in the same amount so 1
    |pad
    |> will start rubbing and in turn sqeel. They also start to fade a bit after
    |a
    |> long steep decent.
    |
    |I'm not so sure disc are a good idea for long steep descents. I have them
    |(Hayes) and frankly the small rotors don't have enough surface area to
    |dissipate the heat. They burn up while the rim brake riders have no |problem. This seems to be the
    one (infrequent at least in my case ) |downside with discs. Once they get superheated they seem to
    severely loose |effectiveness too.

    Wow.

    That is quite the opposite of my experience with many different flavors of rims brakes.

    I used to get heat flats with cantis/Vs/hydraulic rim brakes on one long, hot, steep descent.

    No problem with discs, even with the relatively crappy Magura Louise discs that I used for a while.

  6. "John Harlow" <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:


    I'm not so sure disc are a good idea for long steep descents. I have them (Hayes) and frankly the
    small rotors don't have enough surface area to dissipate the heat. They burn up while the rim
    brake riders have no problem. This seems to be the one (infrequent at least in my case ) downside
    with discs. Once they get superheated they seem to severely loose effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    Interesting, I'm on my 2nd season DH'ing with 6" (front & rear) Hayes hydros......no problems here
    or at places like San Juan trail (6 mi DH).

    Sounds like you may have a bad bleed?
    --
    Slacker

  7. Quoted message said:

    |I'm not so sure disc are a good idea for long steep descents. I have


    them

    Quoted message said:

    |(Hayes) and frankly the small rotors don't have enough surface area to
    |dissipate the heat. They burn up while the rim brake riders have no |problem. This seems to be
    the one (infrequent at least in my case ) |downside with discs. Once they get superheated they
    seem to severely


    loose

    Quoted message said:

    |effectiveness too.

    Wow.

    That is quite the opposite of my experience with many different flavors of rims brakes.

    I used to get heat flats with cantis/Vs/hydraulic rim brakes on one long, hot, steep descent.

    No problem with discs, even with the relatively crappy Magura Louise discs that I used for
    a while.

    Seems to me I remember seeing steam coming off some discs when you sprayed water on them in some of
    your own videos? And you had no problems? Yes - that is quite opposite my experience.

  8. John Harlow said:

    "> I'm looking for a good hydraulic disc brake system. I do pretty aggresive

    Quoted message said:

    cross country riding, meaning I look for very steep very technical trails

    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem is that as the pads wear, the 2 pistons don't move in the same amount so 1

    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit after

    a

    Quoted message said:

    long steep decent.

    I'm not so sure disc are a good idea for long steep descents. I have them (Hayes) and frankly the
    small rotors don't have enough surface area to dissipate the heat. They burn up while the rim
    brake riders have no problem. This seems to be the one (infrequent at least in my case ) downside
    with discs. Once they get superheated they seem to severely loose effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    Maybe it's the hydrolic fluid? I have Hayes mechanicals and have no fade problems -- even on long
    mountain fire-road descents. I use EBC green pads, but I've also done it with Hayes pads and found
    them to slighly better at fade resistance.

    David

  9. Westie said:

    "Chris Phillipo" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    In article <[email hidden]>, [email hidden] says...

    Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty

    aggresive

    Quoted message said:
    Quoted message said:

    cross country riding, meaning I look for very steep very technical

    trails to

    Quoted message said:
    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem

    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1

    pad

    Quoted message said:
    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit

    after a

    Quoted message said:
    Quoted message said:

    long steep decent. I'm sure I would like the Shimano XT, or some Hayes equivelent disk brakes but
    I was wondering if there were some different brands like Grimeca, Hope, or Magura that someone
    would have some input

    on.

    Quoted message said:
    Quoted message said:

    Input on Shimano and Hayes would also be welcome.

    Thanks for any help on this topic.

    TJ

    I would suggest same better aftermarket pads from Koolstop or EBC before you go throwing out those
    brakes. I have Hayes but I can't say they are really that much better than Shimano Deore. In fact
    I think the deore lever is much better designed.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

    I've just put another new set of EBC Green in and I'm sure people think that it's a hog-on-fire
    coming up behind them. The squealing is terrible! LOL! I'll let them bed in a little before I
    reach for the oil can. Good pads won't always solve the problem. But better brakes probably won't
    either. Water certainly doesn't help. I don't know a great deal about the brakes but would get
    them checked - it doesn't sound right that one piston is moving less than the other.
    --
    Westie

    Standard answer -- disc brake squeel us usually oil contamination -- on the rotor and on the pads.
    SO, just replacing the pads won't get rid of the squeel. A common source of the oil is from cleaning
    your chain. I learned early to be really careful not to spray water from the chain side even
    remotely in the direction of the discs -- even low pressure water'll carry that lube onto your rotor
    and it lubes just as well there as on your chain 🙂. I even made a disc cover from a big plastic lid
    that I put over it when I clean my chain on the bike so that I don't have to worry.

    BUT, things to try...
    - comet
    - alcohol
    - auto brake cleaner (not on hayes)
    - mud -- this is what works best for me. Smear it on the rotor and ride. Repeat as necessary 🙂. I
    use fine mud without stones -- stones get in the holes of the rotor and gouge the pads -- not a
    show stopper, just a little less pad in contact with the rotor until they wear even again. The big
    advantage to mud is that it's always available 🙂. If you're not near water, make some mud with
    water from your hydration pak and a little trail dirt. AND, it's best not to do it at the bottom
    of a hill -- the rotor's a bit hot (although the sizzle's kinda neat until you realize a
    nano-second later that it's your finger that's sizzling 🙂).

    David

  10. John Harlow said:
    Quoted message said:

    |I'm not so sure disc are a good idea for long steep descents. I have

    them

    Quoted message said:

    |(Hayes) and frankly the small rotors don't have enough surface area to
    |dissipate the heat. They burn up while the rim brake riders have no |problem. This seems to be
    the one (infrequent at least in my case ) |downside with discs. Once they get superheated they
    seem to severely

    loose

    Quoted message said:

    |effectiveness too.

    Wow.

    That is quite the opposite of my experience with many different flavors of rims brakes.

    I used to get heat flats with cantis/Vs/hydraulic rim brakes on one long, hot, steep descent.

    No problem with discs, even with the relatively crappy Magura Louise discs that I used for
    a while.

    Seems to me I remember seeing steam coming off some discs when you sprayed water on them in some
    of your own videos? And you had no problems? Yes - that is quite opposite my experience.

    What makes you think that's a bad thing? You're turning motion into heat is the way that brakes work
    (conservation of energy) -- whether it's rim heat or rotor heat. Heating a piece of metal and a
    brake pad that's designed for heat seems like a much better option than heating a rim with a rubber
    tube in it with rubber pads. In fact, on the same mountain descents that I mentioned in an earlier
    post using XTR Vs (before I got my discs), I used to overheat the pads and they would start to get
    gravelly and if I didn't stop, they would fade BADLY. I never blew a tube -- when the above
    happened, I stopped until they cooled down (a real PITA).

    You should see how hot car brakes get 🙂.

    David

  11. John Harlow <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:


    "> I'm looking for a good hydraulic disc brake system. I do pretty aggresive

    Quoted message said:

    cross country riding, meaning I look for very steep very technical


    trails

    Quoted message said:

    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem


    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit


    after

    Quoted message said:

    a

    Quoted message said:

    long steep decent.

    I'm not so sure disc are a good idea for long steep descents. I have them (Hayes) and frankly the
    small rotors don't have enough surface area to dissipate the heat. They burn up while the rim
    brake riders have no problem. This seems to be the one (infrequent at least in my case ) downside
    with discs. Once they get superheated they seem to severely


    loose

    Quoted message said:

    effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    They do a what when?!?!?!?!? Discs are the _best_ idea for long steep descents 'IMNSHO' - only probs
    I heard of are with the closed system ones (with pad clearance adjustable on the master cyl.), where
    the pads get tight against the rotor as they get hot and they lock up. The open ones (like my Hope
    Mini) 'self-adjust', so this doesn't happen. Only time they faded on me was when my fork seal went
    and dumped fork oil all over the rotor, which wasn't the fault of the brakes, obviously - they have
    _never_ let me down otherwise.

    Shaun aRe - To the OP - I can highly recommend the HOPE brakes, from experience, and they came
    highly recommended to me the same way.

  12. "John Harlow" <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:


    "> I'm looking for a good hydraulic disc brake system. I do pretty aggresive

    Quoted message said:

    cross country riding, meaning I look for very steep very technical


    trails

    Quoted message said:

    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem


    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit


    after

    Quoted message said:

    a

    Quoted message said:

    long steep decent.

    I'm not so sure disc are a good idea for long steep descents. I have them (Hayes) and frankly the
    small rotors don't have enough surface area to dissipate the heat. They burn up while the rim
    brake riders have no problem. This seems to be the one (infrequent at least in my case ) downside
    with discs. Once they get superheated they seem to severely


    loose

    Quoted message said:

    effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    What?! Must be those 'Comp' level brakes. ;^) No problems with my 8in Hayes Mags or 5 1/4"
    Hope Minis.

    Mike - who'll never go back to rim brakes.

  13. Quoted message said:
    Quoted message said:

    I'm not so sure disc are a good idea for long steep descents. I have


    them

    Quoted message said:
    Quoted message said:

    (Hayes) and frankly the small rotors don't have enough surface area to dissipate the heat. They
    burn up while the rim brake riders have no problem. This seems to be the one (infrequent at
    least in my case ) downside with discs. Once they get superheated they seem to severely


    loose

    Quoted message said:

    effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    What?! Must be those 'Comp' level brakes. ;^) No problems with my 8in Hayes Mags or 5 1/4"
    Hope Minis.

    Wow. Apparently I am the only one to have ever had this happen. But careening down a narrow mountain
    hillside with a rapidly approaching switchback and a fistfull of brake lever fading to virtual
    nothingness got my attention.

    BTW, it wasn't the comps either - it was the stock ones on the Giant.

  14. "John Harlow" <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:
    Quoted message said:
    Quoted message said:

    I'm not so sure disc are a good idea for long steep descents. I have


    them

    Quoted message said:
    Quoted message said:

    (Hayes) and frankly the small rotors don't have enough surface area to dissipate the heat.
    They burn up while the rim brake riders have no problem. This seems to be the one (infrequent
    at least in my case ) downside with discs. Once they get superheated they seem to severely


    loose

    Quoted message said:

    effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    What?! Must be those 'Comp' level brakes. ;^) No problems with my 8in Hayes Mags or 5 1/4" Hope
    Minis.

    Wow. Apparently I am the only one to have ever had this happen. But careening down a narrow
    mountain hillside with a rapidly approaching switchback and a fistfull of brake lever fading to
    virtual nothingness got my attention.

    BTW, it wasn't the comps either - it was the stock ones on the Giant.

    Yeah, I don't know, my Hayes Mag on the front wheel has been perfect, and I even use far less rear
    brake with it that I used to with my v-brake. So I don't know what the deal is.

    A.

  15. Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty aggresive cross country riding,
    meaning I look for very steep very technical trails


    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem is that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit after


    a

    Quoted message said:

    long steep decent. I'm sure I would like the Shimano XT, or some Hayes equivelent disk brakes but
    I was wondering if there were some different brands like Grimeca, Hope, or Magura that someone
    would have some input


    on.

    Quoted message said:

    Input on Shimano and Hayes would also be welcome.

    Thanks for any help on this topic.

    TJ

    Simply put, avoid hope like the plague. They look nice but are absolutely [censored].

    Small Black "i detest my Hope m4 setup" Dog

  16. Small Black Dog <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:
    Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty


    aggresive

    Quoted message said:
    Quoted message said:

    cross country riding, meaning I look for very steep very technical


    trails

    Quoted message said:

    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem


    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit


    after

    Quoted message said:

    a

    Quoted message said:

    long steep decent. I'm sure I would like the Shimano XT, or some Hayes equivelent disk brakes
    but I was wondering if there were some different brands like Grimeca, Hope, or Magura that
    someone would have some input


    on.

    Quoted message said:

    Input on Shimano and Hayes would also be welcome.

    Thanks for any help on this topic.

    TJ

    Simply put, avoid hope like the plague. They look nice but are absolutely [censored].

    Quoted message said:

    Small Black "i detest my Hope m4 setup" Dog

    I have a Hope Mini, and it works excellently. The DH racer in our MTB club uses Hope (4 pot ones,
    not sure which) and loves them - no probs. One of the other 'extreem' (heh) guys in the club uses
    them (same as me, the Mini) for DH and trials, and recommended them to me in the first place. In
    fact, half of the disc brake users in the bloody club use them and _none_ have reported anything
    but great, hassle free performance. WTF is wrong with _your_ Hopes that's convinced you they are
    all '[censored]'?

    Shaun aRe

  17. "John Harlow" <[email hidden]> wrote in message "]news:[email hidden]...

    Quoted message said:
    Quoted message said:
    Quoted message said:

    I'm not so sure disc are a good idea for long steep descents. I have


    them

    Quoted message said:
    Quoted message said:

    (Hayes) and frankly the small rotors don't have enough surface area to dissipate the heat.
    They burn up while the rim brake riders have no problem. This seems to be the one (infrequent
    at least in my case ) downside with discs. Once they get superheated they seem to severely


    loose

    Quoted message said:

    effectiveness too.

    You might have marginally better luck with larger (8 inch) rotors.

    What?! Must be those 'Comp' level brakes. ;^) No problems with my 8in Hayes Mags or 5 1/4" Hope
    Minis.

    Wow. Apparently I am the only one to have ever had this happen. But careening down a narrow
    mountain hillside with a rapidly approaching switchback and a fistfull of brake lever fading to
    virtual nothingness got my attention.

    BTW, it wasn't the comps either - it was the stock ones on the Giant.

    I suspect you have a problem with the setup, or else a defective set of brakes. A friend of mine
    also wasn't all that happy with his Hayes discs when he got them, but after riding mine just a
    short way, he knew his setup was not right. I can't remember exactly what was the problem, but
    bleed issues come to mind as a possibility. Now that he has his PROPERLY set up, he is very
    happy with them; major turnaround in performance, he said. In my experience, it takes a
    tremendously serious amount of speed and braking to have any fade problems with Hayes.
    --
    Off to ride the mountains, D H Reply to newsgroup. Spam is out of control.

  18. "Small Black Dog" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:
    Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty


    aggresive

    Quoted message said:
    Quoted message said:

    cross country riding, meaning I look for very steep very technical


    trails

    Quoted message said:

    to

    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the Shimano
    brakes that came with the 2002 Specialized Enduro, I believe they are the M525 hydraulic disk
    brakes. The problem


    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit


    after

    Quoted message said:

    a

    Quoted message said:

    long steep decent. I'm sure I would like the Shimano XT, or some Hayes equivelent disk brakes
    but I was wondering if there were some different brands like Grimeca, Hope, or Magura that
    someone would have some input


    on.

    Quoted message said:

    Input on Shimano and Hayes would also be welcome.

    Thanks for any help on this topic.

    TJ

    Simply put, avoid hope like the plague. They look nice but are absolutely [censored].

    Small Black "i detest my Hope m4 setup" Dog

    twistedmonkey.org18359827e1d8f048aeff7c083
    92b12c3.jpg

  19. Quoted message said:
    Quoted message said:

    No problem with discs, even with the relatively crappy Magura Louise discs that I used for a
    while.

    Seems to me I remember seeing steam coming off some discs when you sprayed water on them in some
    of your own videos? And you had no problems? Yes - that is quite opposite my experience.

    You'll get steam off rims too, you'll also get blown tires and metled rubber pads. Don't ride your
    brakes and you won't have a problem. It takes seconds to cool a disc brake at speed but it can't do
    that if the pad is always rubbing the rotor.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

  20. In article <[email hidden]>, [email hidden] says...

    Quoted message said:


    "Chris Phillipo" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    In article <[email hidden]>, [email hidden] says...

    Quoted message said:

    I'm looking for a good hydraulic disc brake system. I do pretty


    aggresive

    Quoted message said:
    Quoted message said:

    cross country riding, meaning I look for very steep very technical


    trails to

    Quoted message said:
    Quoted message said:

    ride both up and down and thow in the moderate connecting trails. I'm curently using the
    Shimano brakes that came with the 2002 Specialized Enduro, I believe they are the M525
    hydraulic disk brakes. The problem


    is

    Quoted message said:
    Quoted message said:

    that as the pads wear, the 2 pistons don't move in the same amount so 1


    pad

    Quoted message said:
    Quoted message said:

    will start rubbing and in turn sqeel. They also start to fade a bit


    after a

    Quoted message said:
    Quoted message said:

    long steep decent. I'm sure I would like the Shimano XT, or some Hayes equivelent disk brakes
    but I was wondering if there were some different brands like Grimeca, Hope, or Magura that
    someone would have some input


    on.

    Quoted message said:
    Quoted message said:

    Input on Shimano and Hayes would also be welcome.

    Thanks for any help on this topic.

    TJ

    I would suggest same better aftermarket pads from Koolstop or EBC before you go throwing out
    those brakes. I have Hayes but I can't say they are really that much better than Shimano Deore.
    In fact I think the deore lever is much better designed.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

    I've just put another new set of EBC Green in and I'm sure people think that it's a hog-on-fire
    coming up behind them. The squealing is terrible! LOL! I'll let them bed in a little before I
    reach for the oil can. Good pads won't always solve the problem. But better brakes probably won't
    either. Water certainly doesn't help. I don't know a great deal about the brakes but would get
    them checked - it doesn't sound right that one piston is moving less than the other.
    --
    Westie

    The pads would glaze if there is even the slighest oil film on your rotors. Then they would sqeal. I
    would give the rotors a good going over with sandpaper and then alcohol. Then look at the pistons
    and make sure they aren't leaking anywhere. If they are not, push them both back into the caliper
    and center the caliper exactly over the rotor before the first time you press the brake. Both
    pistons should move close to the same amount but that depends on how well centered the rotor is. If
    you look from the top and see that the rotor is being nudged to one side or the other, something is
    either wrong with your alignment or the brake.
    --
    _________________________
    Chris Phillipo - Cape Breton, Nova Scotia ramsays-online.comramsays-online.com

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