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Disk brakes? Hot!

Started by Ain · · Last activity · 20 posts · 1,657 views

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Mountain Bikes
Published
4 May 2004
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5 May 2004
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Ain
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  1. Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way down,
    about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of the
    hill I did a stupid thing. I stopped, got off the bike, and
    touched the disk. I almost burned the skin off my fingers,
    they were like 400 degrees.

    Is there any warning I missed about not touching the disks?
    Is there a limit to how long I can brake? Will long braking
    sessions cause damage to the disks or brake pads?

    Thanks in advance.

  2. They only get hot the first couple of times. Try again in
    a few days.

    "ain" <[email hidden]> wrote in message
    news:MeElc.360828$oR5.46456@pd7tw3no...

    Quoted message said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was


    riding

    Quoted message said:

    down a hill earlier tonight, It was pretty steep grade so
    I had the brakes on all the way down, about a full minute
    give or take.

    I was wondering if the disk brakes got warm after having
    them on for so


    long

    Quoted message said:

    so after I got down to the bottom of the hill I did a
    stupid thing. I stopped, got off the bike, and touched the
    disk. I almost burned the skin off my fingers, they were
    like 400 degrees.

    Is there any warning I missed about not touching the
    disks? Is there a


    limit

    Quoted message said:

    to how long I can brake? Will long braking sessions cause
    damage to the disks or brake pads?

    Thanks in advance.

  3. ain said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Is there any warning I missed about not touching the
    disks?

    Yeah, it's right next to *that* other warning sticker about
    not storing double edged razor blades in your underwear.
    --
    Slacker

  4. Jerry Bone Jr said:

    They only get hot the first couple of times. Try again in
    a few days.

    Can't wait to see his post in a few days.

    Greg

  5. Nice Jerry, that's what you should tell the kid. Yeesh :-)

    They get hot and long braking won't hurt them, they won't
    fade very much in my experiences. Some will, but the good
    ones should not. They get hot!!! Some moreso than others,
    I have Hayes and Shimano and my Hayes heat up easily
    compared to the Shimano's. The best part is riding in the
    rain and then listening to the raindrops hitting your disc
    after a long decent, ahhh, biking. It's been a long winter
    I can't wait....

    ....begging for some trail action

    Sherman

    "Jerry Bone Jr" <[email hidden]> wrote in
    message
    "]news:[email hidden]...

    Quoted message said:

    They only get hot the first couple of times. Try again in
    a few days.

    "ain" <[email hidden]> wrote in message
    news:MeElc.360828$oR5.46456@pd7tw3no...

    Quoted message said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was


    riding

    Quoted message said:

    down a hill earlier tonight, It was pretty steep grade
    so I had the


    brakes

    Quoted message said:
    Quoted message said:

    on all the way down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so


    long

    Quoted message said:

    so after I got down to the bottom of the hill I did a
    stupid thing. I stopped, got off the bike, and touched
    the disk. I almost burned the


    skin

    Quoted message said:
    Quoted message said:

    off my fingers, they were like 400 degrees.

    Is there any warning I missed about not touching the
    disks? Is there a


    limit

    Quoted message said:

    to how long I can brake? Will long braking sessions
    cause damage to the disks or brake pads?

    Thanks in advance.


  6. "ain" <[email hidden]> wrote in message news:MeElc.360828$oR5.46456@pd7tw3no...

    Quoted message said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was


    riding

    Quoted message said:

    down a hill earlier tonight, It was pretty steep grade so
    I had the brakes on all the way down, about a full minute
    give or take.

    I was wondering if the disk brakes got warm after having
    them on for so


    long

    Quoted message said:

    so after I got down to the bottom of the hill I did a
    stupid thing. I stopped, got off the bike, and touched the
    disk. I almost burned the skin off my fingers, they were
    like 400 degrees.

    Is there any warning I missed about not touching the
    disks? Is there a


    limit

    Quoted message said:

    to how long I can brake? Will long braking sessions cause
    damage to the disks or brake pads?

    Thanks in advance.

    Oh.......you've done that too? 🙂

    I learned quickly never to do that again.

  7. ain said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Is there any warning I missed about not touching the
    disks? Is there a limit to how long I can brake? Will long
    braking sessions cause damage to the disks or brake pads?

    Thanks in advance.

    It's called friction! Rub your hands together and tell me if
    they don't get warm. Same principle.

    --
    - Zilla Cary, NC (Remove XSPAM)

  8. "ain" <[email hidden]> wrote in message news:MeElc.360828$oR5.46456@pd7tw3no...

    Quoted message said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was


    riding

    Quoted message said:

    down a hill earlier tonight, It was pretty steep grade so
    I had the brakes on all the way down, about a full minute
    give or take.

    I was wondering if the disk brakes got warm after having
    them on for so


    long

    Quoted message said:

    so after I got down to the bottom of the hill I did a
    stupid thing. I stopped, got off the bike, and touched the
    disk. I almost burned the skin off my fingers, they were
    like 400 degrees.

    Running w/ scissors is dumb, too.

    Dave

  9. ain said:

    Is there any warning I missed about not touching the
    disks?

    Sue the makers for 300 gazillion bucks!!!!

    (That is when you're american. The rest of the world
    wouldn't be THAT dumb. 😉 )

  10. "ain" <[email hidden]> wrote in message news:MeElc.360828$oR5.46456@pd7tw3no...

    Quoted message said:

    Hello everyone.

    Quoted message said:

    Is there any warning I missed about not touching the
    disks?

    the warning is kind of inclusive under the main heading in
    the book of life called "common sense"

    Michael

  11. Quoted message said:

    Is there any warning I missed about not touching the
    disks? Is there a limit to how long I can brake? Will long
    braking sessions cause damage to the disks or brake pads?

    Brakes get hot; don't touch them. Don't stick body parts in
    the chain or the spokes. Do not wreck. Check your front tire
    mount often. Do not attempt to remove a leaf which is
    rubbing a tire.

    There. You've been warned. 😉

    There IS a limit to how long you can brake, just like in a
    car or any other vehicle which uses friction brakes. You'll
    know when you've hit the limit: they simply stop braking no
    matter how hard you apply them.

    Just like in your car (if you are yet of driving age), you
    can indeed cook the brakes, thereby shortening their life.
    That's why they make replacement parts 😉

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

    Quoted message said:

    Running w/ scissors is dumb, too. Dave

    Unless you are listening to the Wierd Al album of the
    same name!

  13. ain said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Is there any warning I missed about not touching the
    disks? Is there a limit to how long I can brake? Will long
    braking sessions cause damage to the disks or brake pads?

    Thanks in advance.


    Welcome to AM-B. Went straight for the initiation did you?
    ;-)

    Cheers, Shawn

  14. ain said:

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Is there any warning I missed about not touching the
    disks?

    See there all you parents out there, this is what happens
    when you protect your children from "unsupervised playtime".
    You get a whole population of adults who expect everything
    that they touch to behave like a Fisher-Price toy. No sharp
    edges, hot surfaces, etc.

    See, life isn't like that. There's sharp, hot, caustic,
    dirty, and otherwise unsafe stuff EVERYWHERE. If you
    don't learn that before you leave high school, when do
    you learn it?

    When I was a kid, my parents literally sent me out to play
    with a can of lighter fluid and a box of matches. And I
    turned out OK.
    --
    Tom "who really needs eyelashes anyway?" Purvis
    Salida, CO - arkansasvalley.nettpurvis

  15. Tom Purvis said:
    ain said:

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Is there any warning I missed about not touching the
    disks?

    See there all you parents out there, this is what happens
    when you protect your children from "unsupervised
    playtime". You get a whole population of adults who expect
    everything that they touch to behave like a Fisher-Price
    toy. No sharp edges, hot surfaces, etc.

    See, life isn't like that. There's sharp, hot, caustic,
    dirty, and otherwise unsafe stuff EVERYWHERE. If you
    don't learn that before you leave high school, when do
    you learn it?

    When I was a kid, my parents literally sent me out to play
    with a can of lighter fluid and a box of matches. And I
    turned out OK.

    You going on the Absolute ride today? Just leave the lighter
    fluid at home OK?

    Shawn

  16. Tom Purvis said:

    When I was a kid, my parents literally sent me out to play
    with a can of lighter fluid and a box of matches.

    Was this by any chance right after they took out a life
    insurance policy on you?

    Quoted message said:

    And I turned out OK.

    Yeah, much to their chagrin! 🙂

    Bill "Little Tommy Boom-boom?" S.

  17. Zilla said:
    Quoted message said:

    Is there any warning I missed about not touching the
    disks? Is there a limit to how long I can brake? Will
    long braking sessions cause damage to the disks or
    brake pads?

    Well, talk to any old timer roadie about sewups. They're
    glued to the rims; too much braking and the glue melts and
    the tire comes off.

    Sewups make for some seriously fast descents....

    As for your question, where does the kinetic energy of
    you+bike@some high speed go? Into heat. The only way you
    dissipate that energy, short of hitting a large fixed
    object, is by converting it into heat. Rims get warm;
    they have a larger surface area. Disks get hot; smaller
    surface area.

    And as for the warning, wasn't the yowling you heard warning
    enough? Will you do it again? :-)

    -Kamus

  18. "Tom Purvis" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    See there all you parents out there, this is what happens
    when you protect your children from "unsupervised
    playtime". You get a whole population of adults who expect
    everything that they touch to behave like a Fisher-Price
    toy. No sharp edges, hot surfaces, etc.

    Agreed. I am not that way with my son at all. I think that
    plays into why so many Americans are sue happy.

  19. ain said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Who's got that photo of the glow in the dark disc rotors
    that was posted ages back? Was that one of your's,
    Slacker???? It was a night-time photo of a blurry bike and
    you could see the rotors glowing orange!

    --
    Westie (Replace 'invalid' with 'yahoo' when replying.)

  20. "Westie" <[email hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:
    ain said:

    Hello everyone.

    Kinda new here, been reading the newsgroup for about a
    week or two.

    Just bought a new Specialized crossroads bike with disk
    brakes. I was riding down a hill earlier tonight, It was
    pretty steep grade so I had the brakes on all the way
    down, about a full minute give or take.

    I was wondering if the disk brakes got warm after having
    them on for so long so after I got down to the bottom of
    the hill I did a stupid thing. I stopped, got off the
    bike, and touched the disk. I almost burned the skin off
    my fingers, they were like 400 degrees.

    Who's got that photo of the glow in the dark disc rotors
    that was posted ages back? Was that one of your's,
    Slacker???? It was a night-time photo of a blurry bike and
    you could see the rotors glowing orange!

    Might have been John G (Clydesdale).

    Shaun aRe

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