Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
So I cleaned the calipers with isopropyl alcohol - that worked for 2 minutes. Readjusted the calipers and mounts with proper bolt tension - that didn't work. Pulled the pads, steel wooled em and isopropyl again (cheap stuff) and it worked for----3 minutes. So at least I was getting better.
Finally, pulled front and back pads and swapped em. That did it!! No more squeel. Any ideas on why this happened? I don't have a warped rotor as far as he eye can tell...
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
Perfect way to learn proper braking and control. I can't stand it when I see someone who can't stop properly because they're chicken [censored] about using their front brakes....THAT WHERE THE STOPPING POWER IS!
Quoted message said:
Finally, pulled front and back pads and swapped em. That did it!! No more squeel. Any ideas on why this happened?
Yes, they're not vibrating on the rear discs like the other pads were.
Peace, Bill The mind serves properly as a window glass rather than as a reflector, that is, the mind should give an immediate view instead of an interpretation of the world. :-]
"Bob" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
So I cleaned the calipers with isopropyl alcohol - that worked for 2 minutes. Readjusted the calipers and mounts with proper bolt tension - that didn't work. Pulled the pads, steel wooled em and isopropyl again (cheap stuff) and it worked for----3 minutes. So at least I was getting better.
Finally, pulled front and back pads and swapped em. That did it!! No more squeel. Any ideas on why this happened? I don't have a warped rotor as far as he
eye
Quoted message said:
can tell...
Bob
It's not an easy thing to figure out. My Hayes squealed for the first month, then all of a sudden silence. But I was having a hard time keeping the rear caliper from moving around too.
I did notice my front stopped squealing as soon as I switched forks from RS to Marzocchi, so maybe it's got something to do with flex???
Also, if you suspect contamination again try soaking the pads in iso, then light them on fire and let them burn themselves out. -- Slacker
never under-estimate the power of coca cola........... I run hope 4 pots and have used everything to stop the squealing then I was told to try coke and it worked a damn treat. Also in a uk magazine (mbuk) there was a whole "how to" section on stopping hydraulic brake squeal, basically cut a thin backing plate for the pads before inserting them. This somehow stopped the vibration building upoin brake use and hence lowered the noise.
Simon "Bob" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
So I cleaned the calipers with isopropyl alcohol - that worked for 2 minutes. Readjusted the calipers and mounts with proper bolt tension - that didn't work. Pulled the pads, steel wooled em and isopropyl again (cheap stuff) and it worked for----3 minutes. So at least I was getting better.
Finally, pulled front and back pads and swapped em. That did it!! No more squeel. Any ideas on why this happened? I don't have a warped rotor as far as he
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
So I cleaned the calipers with isopropyl alcohol - that worked for 2 minutes. Readjusted the calipers and mounts with proper bolt tension - that didn't work. Pulled the pads, steel wooled em and isopropyl again (cheap stuff) and it worked for----3 minutes. So at least I was getting better.
Finally, pulled front and back pads and swapped em. That did it!! No more squeel. Any ideas on why this happened? I don't have a warped rotor as far as he eye can tell...
I'm guessing contamination. Probably lube from the chain or from a puddle. When you swapped pads, you got clean pads with a contaminated rotor and clean rotor with contaminated pads. Since the contamination wasn't bad, the swap fixed it for now... It'll come back 🙂.
I find that mud works. A thin coating on the rotor, then brake! Repeat as necessary. Watch for stones in the rotor cut-outs -- they *will* score the pads.
Bob <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
So I cleaned the calipers with isopropyl alcohol - that worked for 2 minutes. Readjusted the calipers and mounts with proper bolt tension - that didn't work. Pulled the pads, steel wooled em and isopropyl again (cheap stuff) and it worked for----3 minutes. So at least I was getting better.
Finally, pulled front and back pads and swapped em. That did it!! No more squeel.
Yeah, I wouldn't use anything other than the bombers also. Interesting thought about the iso fire. I wonder if that would burn the [censored] out of them or just roast them til medium well?
-B
"Slacker" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
"Bob" <[email hidden]> wrote in message "]news:[email hidden]...
It's not an easy thing to figure out. My Hayes squealed for the first month, then all of a sudden silence. But I was having a hard time keeping the rear caliper from moving around too.
I did notice my front stopped squealing as soon as I switched forks from
RS
Quoted message said:
to Marzocchi, so maybe it's got something to do with flex???
Also, if you suspect contamination again try soaking the pads in iso, then light them on fire and let them burn themselves out. -- Slacker
"Simon" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
never under-estimate the power of coca cola........... I run hope 4 pots
and
Quoted message said:
have used everything to stop the squealing then I was told to try coke and it worked a damn treat. Also in a uk magazine (mbuk) there was a whole "how to" section on
stopping
Quoted message said:
hydraulic brake squeal, basically cut a thin backing plate for the pads before inserting them. This somehow stopped the vibration building upoin brake use and hence lowered the noise.
The idea's been around for years in automotive disc brakes. I think it's the smooth surface of the steel preventing the "stick-slip" of pad against piston that causes squealing. They are known in car circles as "anti-squeal shims" - betya didn't see (hear?) that comin'.
Andy "eeeeeeeeeeeeEEEEEEEEEEEEEEEEE! MOOOOO!" Chequer
"Slacker" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
I did notice my front stopped squealing as soon as I switched forks from
RS
Quoted message said:
to Marzocchi, so maybe it's got something to do with flex???
Yeah, my Marzocchi Marathon cured my front Hope Mini from squealing yesterday. By puking foamy fork oil all over the front caliper went I released the pressure from the negative chamber. The fork was stuck down to 80mm and I was checking the pressures to figure out what was going on. The forks ok now but braking isn't so hot. Gonna try that fire thing later. But I'm thinking it's new pad time.
Actually the Hope rep I spoke with at a Norba Natl blamed Marzocchi forks for squealing because of the hollow end of the fork leg was a resonance chamber and suggested filling it with foam.
Mike - Gonna have to be careful where I point that thing. psssssht...dammit!
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
Perfect way to learn proper braking and control. I can't stand it when I see someone who can't stop properly because they're chicken [censored] about using their front brakes....THAT WHERE THE STOPPING POWER IS!
Grip can be a factor when off-road, so sometimes using the rear brake as well as the front will slow you quicker, or at least reduce the chance of locking up a wheel.
Quoted message said:
Quoted message said:
Finally, pulled front and back pads and swapped em. That did it!! No more squeel. Any ideas on why this happened?
Yes, they're not vibrating on the rear discs like the other pads were.
Or they're not vibrating against the piston like the other pads were.
I thought contamination also, but they "looked" ok. Some minimal pits, but no DOT on them. I like the isopropyl fire idea, but then again, I am a licensed pyrotechnic and can't pass up a good flame. What about this grease on the backside? What is the reason that should work?
I still think it is due to a weaker or weakened spring clip on the backside of the pad. The shim concept (as with car brakes) probably would work.
Anyway, thanks and no squealn' now.
Bob
PS Nice eeeeeeeeeeeeeEEEEEEEEEEEEEEEEEEEEEeee Andy. That is just about how it sounded.
"David Kunz" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Bob said:
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all
conditions
Quoted message said:
Quoted message said:
and a pleasure to have. Then I started getting a nasty squeel at the back. It was so bad, that I started using the front almost without the back (except high speed turns).
So I cleaned the calipers with isopropyl alcohol - that worked for 2 minutes. Readjusted the calipers and mounts with proper bolt tension - that
didn't
Quoted message said:
Quoted message said:
work. Pulled the pads, steel wooled em and isopropyl again (cheap stuff) and
it
Quoted message said:
Quoted message said:
worked for----3 minutes. So at least I was getting better.
Finally, pulled front and back pads and swapped em. That did it!! No
more
Quoted message said:
Quoted message said:
squeel. Any ideas on why this happened? I don't have a warped rotor as far as he
eye
Quoted message said:
Quoted message said:
can tell...
I'm guessing contamination. Probably lube from the chain or from a puddle. When you swapped pads, you got clean pads with a contaminated rotor and clean rotor with contaminated pads. Since the contamination wasn't bad, the swap fixed it for now... It'll come back 🙂.
I find that mud works. A thin coating on the rotor, then brake! Repeat as necessary. Watch for stones in the rotor cut-outs -- they *will* score the pads.
Bob <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Been riding some new hayes hydraulic 6" disc brakes the past few months. After the breakin, everything was fine. Good modulation in all conditions and a pleasure to have. Then I started getting a nasty squeel at the back.
<snip>
Quoted message said:
Quoted message said:
Any ideas on why this happened?
Yes, they're [censored] - buy some Hope's.
My Hope Minis can squeel when they want to, usually when it's damp and and I trying to ride sensibly past the horse riding school out with its beginners class.
The back pads have a little less of tension on the rear set spring. Perhaps that allowed for excessive vibration. The idea of a backing plate is interesting, but I think I will try firming the spring first if it happens again.
The Marathon front shock does have a nice vibration to it, but no squeal. I just set my damping a little higher to prevent too much vibration.
Thanks to all (except for Bill pointing out the obvious in CAPS no less.....)
......some good ideas here.
Bob
"Andy Chequer" <bicycle.repair.man@(removethisbittosend)secretworldgovernment.org> wrote in message "]news:[email hidden]...
Quoted message said:
The idea's been around for years in automotive disc brakes. I think it's
the
Quoted message said:
smooth surface of the steel preventing the "stick-slip" of pad against piston that causes squealing. They are known in car circles as
"anti-squeal
Quoted message said:
shims" - betya didn't see (hear?) that comin'.
Andy "eeeeeeeeeeeeEEEEEEEEEEEEEEEEE! MOOOOO!" Chequer
Grip can be a factor when off-road, so sometimes using the rear brake as well as the front will slow you quicker, or at least reduce the chance of locking up a wheel.
I'm not say don't use you rear, you should use both for the best results.....as long as you know how to use them to prevent skidding and accidents.
Peace, Bill The mind serves properly as a window glass rather than as a reflector, that is, the mind should give an immediate view instead of an interpretation of the world. :-]
"Andy Chequer" <bicycle.repair.man@(removethisbittosend)secretworldgovernment.org> wrote in message "]news:[email hidden]...
Quoted message said:
"Simon" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
never under-estimate the power of coca cola........... I run hope 4 pots
and
Quoted message said:
have used everything to stop the squealing then I was told to try coke
and
Quoted message said:
Quoted message said:
it worked a damn treat. Also in a uk magazine (mbuk) there was a whole "how to" section on
stopping
Quoted message said:
hydraulic brake squeal, basically cut a thin backing plate for the pads before inserting them. This somehow stopped the vibration building upoin brake use and hence lowered the noise.
The idea's been around for years in automotive disc brakes. I think it's
the
Quoted message said:
smooth surface of the steel preventing the "stick-slip" of pad against piston that causes squealing. They are known in car circles as
"anti-squeal
Quoted message said:
shims" - betya didn't see (hear?) that comin'.
Andy "eeeeeeeeeeeeEEEEEEEEEEEEEEEEE! MOOOOO!" Chequer
A small dab of high temp grease or anti-seize on the back (piston side) of the pads will also help eliminate squeal. Another tip gained from the automotive industry.
Bob <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
I thought contamination also, but they "looked" ok. Some minimal pits, but no DOT on them. I like the isopropyl fire idea, but then again, I am a licensed
pyrotechnic
Quoted message said:
and can't pass up a good flame. What about this grease on the backside?
Helps you get tight pants on.
Quoted message said:
What is the reason that should work?
Reduces that blasted [censored] friction.
Quoted message said:
I still think it is due to a weaker or weakened spring clip on the
backside
Quoted message said:
of the pad.
Once the brakes are applied, it shouldn't make any difference, as the forces involved are far greater than any force the spiring is capable of appling.
Quoted message said:
The shim concept (as with car brakes) probably would work.
John Murf <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
In article said:
Bob <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
Been riding some new hayes hydraulic 6" disc brakes the past few
months.
Quoted message said:
Quoted message said:
Quoted message said:
After the breakin, everything was fine. Good modulation in all
conditions
Quoted message said:
Quoted message said:
Quoted message said:
and a pleasure to have. Then I started getting a nasty squeel at the back.
<snip>
Quoted message said:
Quoted message said:
Any ideas on why this happened?
Yes, they're [censored] - buy some Hope's.
My Hope Minis can squeel when they want to, usually when it's damp and and
I
Quoted message said:
trying to ride sensibly past the horse riding school out with its
beginners
Quoted message said:
class.
<scientific fact> Mine can too, but that's nothing to do with it - _Hope's_ aren't [censored]. When Hope's brakes squeal, it's just them reminding you how well they're working, with the Hayes, it's them telling to to buy some Hope Minis. <scientific fact>
The back pads have a little less of tension on the rear set spring. Perhaps that allowed for excessive vibration. The idea of a backing plate is interesting, but I think I will try firming the spring first if it happens again.
Quoted message said:
Thanks to all (except for Bill pointing out the obvious in CAPS no less.....)
You're welcome at any rate. Peace, Bill
The mind serves properly as a window glass rather than as a reflector, that is, the mind should give an immediate view instead of an interpretation of the world. :-]
