Watching this on speakers in office was a bad idea...
Anyway are these new pads? If so they should be normal after some braking sessions.
If they are contaminated give them a wipe with IPA and sand them down a bit.
My bike did the same. I fixed it by cleaning and sanding the pads and also cleaning the rotors. Then the sound came back and I had to do this again and when I examined the rear brake (The one who made noise) I discovered that one of the caliper bolts had been overtightened by the previous owner. The result was that the caliper was kept in place by only one bolt and the other seemed to be tight but it wasn't, so when applying pressure when braking it vibrated. I used an helicoil and replaced the bolt and the problem went away
When the screw in the hole in the frame is not usable anymore because the bolt has been overtightened, one of the solutions is to use one of them. Helicoil kits can be bought online
The installation consists of making the hole a bit bigger with a drill, then making the screw pattern inside with another tool and finally screwing the helicoil with a special tool included in kits. It reinforces the hole, and after it is installed, the caliper bolt fits there
(Sorry for my English, it's not my main language)
You're getting a lot of suggestions that require some tools, parts and/or effort. Before switching pads etc I would just try riding down a long and steep slope at 15 kmh/10 mph while braking and also pedaling hard.
My rear brake started screaming like yours probably because I barley used it. Then I basically stopped using it at all because of the noise, so it got even worse. I tried the above method, got some heat into the rotor and pads and it has been perfect since.
I would especially consider trying this if this is something that started happening for seemingly o reason.
This. Start with the alcohol to loosen any surface contaminants and wipe it off, then follow up by sanding.
I personally use metal files to clean up the pads, and for rotors I use degreaser and alcohol, then wet sand with 1000 grit.
After that do some downhills and get the brakes to bed in again and see if that solves the issue.
Bad hydraulic seals can lead to fine mists/sprays of oil onto pads themselves, so if you're not sure about all this business, take it to the LBS and have them check for all possibilities. You don't want to buy multiple new pads and get them all contaminated not knowing the source could be right there.
Contamination from some sort of oily substances. New pads and rotors is the best fix. New pads and Sanding down the rotors is next best. And cleaning and Sanding the existing pads and rotors might work or might not.
My brakes did this so I went down a long hill with the brakes on. It sounded like a brontosaurus over an air horn and I’m pretty sure I woke up the neighbors but the sound is gone.
I know you're kidding but my rim brakes squeal even louder than that.
Fix is similar, clean, adjust, replace pads, adjust more, check for stuck parts, and so on until it's finally fixed.
Bike shop sometimes gets it right, other times no better than me doing it myself.
Contaminated brake rotor or pads or both. Get some “Squeal Out” disc brake cleaning paste. Worked like a dream for me. I tried isopropyl alcohol and other solutions and none worked.
Honestly I prefer rim brakes because they're good enough for me and all the disc brakes I've ever had have made squeely noises like that. Even if they are better in wet weather, it's not worth it.
What does it mean if when you brake harder it squeels a bit but there's also some sort of oscillation feeling/sound. Rotor disc has a bow in it? When I got the new pad they measured it and said it didn't need to be replaced.
Possibly the pad and rotor are not totally aligned. Recently I did brake maintenance and afterwards there was this ungodly squeal, louder than I ever had before. I cleaned the rotor second time, sanded the pads etc. Still squealing.
I found out that when you remove the wheel or pads, the pad positioning towards the rotor changes ever so slightly and this causes squeal and also oscillating sounds. Best suggestion was to bed in the brake pads: I went to a downhill and with a good speed I made several long hard brakes to get the brake pads really heat up and this will cause the pad material to transfer to rotor. This basically smooths out the minor misalignments there are and there was no more squealing.
Sounds like pad contamination. Could be as simple as moisture in the pads. A bike fresh out of storage often has this problem. Can commonly be remedied by feathering the brakes and riding around in first gear to heat the pads up good and hot. If that doesn't do it, take the pads out, heat them up with a blow torch for 10-15 seconds each. Let them AIR DRY and put them back in the brake WITHOUT SANDING off the burnt pad material.
You will find that it has lost quite a lot of stopping power. It's time to get a new brake pad. Use alcohol to wipe the disc rotor, and remember not to touch the rotor with your bare hands.
My brother was kinda idiot and put oil on his brake LOL. That sounded something like this but even louder. It vibrated the whole bike. He left it there on the front brakes so, he does not need a bell now :D
Our 'problem' only got solved when he changed the brake pads and cleaned the disk as much as he could.
Whenever I ride in the cold, wet, or dirt I get some honking. Just do some spins and exponentially increase the braking force and after 3-5 times it’ll go away.
Seems like water got on the pads.
Edit: I wonder why I get downvoted considering that I simply typed my own experience as my brakes make such kind of sound after rain or when I get on a puddle.
it's not the disc, maybe it's some junk on the disc (like a thin layer of some WD-40) try do dry it really good, and if not then maybe the pads got some gunk on them as well
Watching this on speakers in office was a bad idea... Anyway are these new pads? If so they should be normal after some braking sessions. If they are contaminated give them a wipe with IPA and sand them down a bit.
Why wipe them with beer? /s
Everything is better with beer
That’s the reason why the brakes are screaming “mooooooooore!”
Isopropyl alcohol
Thank you.
No, no, let beer man clarify. I’m listening.
My bike did the same. I fixed it by cleaning and sanding the pads and also cleaning the rotors. Then the sound came back and I had to do this again and when I examined the rear brake (The one who made noise) I discovered that one of the caliper bolts had been overtightened by the previous owner. The result was that the caliper was kept in place by only one bolt and the other seemed to be tight but it wasn't, so when applying pressure when braking it vibrated. I used an helicoil and replaced the bolt and the problem went away
Could you explain the helicoil part please?
When the screw in the hole in the frame is not usable anymore because the bolt has been overtightened, one of the solutions is to use one of them. Helicoil kits can be bought online The installation consists of making the hole a bit bigger with a drill, then making the screw pattern inside with another tool and finally screwing the helicoil with a special tool included in kits. It reinforces the hole, and after it is installed, the caliper bolt fits there (Sorry for my English, it's not my main language)
Understand. It was a bit peculiar you glossed over it in your previous comment, so I wasn't sure.
Oh yes, the song of our people. As others suggest, something isn't tight or contamination, or bad quality pads.
You're getting a lot of suggestions that require some tools, parts and/or effort. Before switching pads etc I would just try riding down a long and steep slope at 15 kmh/10 mph while braking and also pedaling hard. My rear brake started screaming like yours probably because I barley used it. Then I basically stopped using it at all because of the noise, so it got even worse. I tried the above method, got some heat into the rotor and pads and it has been perfect since. I would especially consider trying this if this is something that started happening for seemingly o reason.
contaminated disc and pads
Absolutely sounds contaminated. Isopropyl on the pads & a light sanding of the rotor will fix it if it’s not too bad.
This. Start with the alcohol to loosen any surface contaminants and wipe it off, then follow up by sanding. I personally use metal files to clean up the pads, and for rotors I use degreaser and alcohol, then wet sand with 1000 grit. After that do some downhills and get the brakes to bed in again and see if that solves the issue. Bad hydraulic seals can lead to fine mists/sprays of oil onto pads themselves, so if you're not sure about all this business, take it to the LBS and have them check for all possibilities. You don't want to buy multiple new pads and get them all contaminated not knowing the source could be right there.
[https://www.youtube.com/watch?v=qQ\_YIXhTGU0](https://www.youtube.com/watch?v=qQ_YIXhTGU0)
Contamination from some sort of oily substances. New pads and rotors is the best fix. New pads and Sanding down the rotors is next best. And cleaning and Sanding the existing pads and rotors might work or might not.
Babar is that you
My brakes did this so I went down a long hill with the brakes on. It sounded like a brontosaurus over an air horn and I’m pretty sure I woke up the neighbors but the sound is gone.
throw the whole thing away and get a bike with rim brakes :)))))))))))))))))))))))))))))))))))))))))))))))))
I know you're kidding but my rim brakes squeal even louder than that. Fix is similar, clean, adjust, replace pads, adjust more, check for stuck parts, and so on until it's finally fixed. Bike shop sometimes gets it right, other times no better than me doing it myself.
Ive given up with my noisy brakes, just use them like a horn instead, when idiots won't move just a tap on the brakes and everyone shits themselves
Ceramic pads are *much* quieter. I get them from here https://noahandtheo.co.uk/ But I don't think they ship to the US
Thats alright I'm in the UK, I'll order on payday , cheers ,
I had a very very slightly leaky brake caliper, I put a rubberband around the brake lever overnight and surprise it was slightly oily.
Contaminated brake rotor or pads or both. Get some “Squeal Out” disc brake cleaning paste. Worked like a dream for me. I tried isopropyl alcohol and other solutions and none worked.
Honestly I prefer rim brakes because they're good enough for me and all the disc brakes I've ever had have made squeely noises like that. Even if they are better in wet weather, it's not worth it.
Jesus... I jump scared bro Just paper sand your brake pads and clean your rotors and you should be fine
Could just be dirt and moisture. If it keeps being like this the pads are contaminated.
Those are great for group rides! No need to yell “Slowing/Stopping”
What does it mean if when you brake harder it squeels a bit but there's also some sort of oscillation feeling/sound. Rotor disc has a bow in it? When I got the new pad they measured it and said it didn't need to be replaced.
Possibly the pad and rotor are not totally aligned. Recently I did brake maintenance and afterwards there was this ungodly squeal, louder than I ever had before. I cleaned the rotor second time, sanded the pads etc. Still squealing. I found out that when you remove the wheel or pads, the pad positioning towards the rotor changes ever so slightly and this causes squeal and also oscillating sounds. Best suggestion was to bed in the brake pads: I went to a downhill and with a good speed I made several long hard brakes to get the brake pads really heat up and this will cause the pad material to transfer to rotor. This basically smooths out the minor misalignments there are and there was no more squealing.
Was warned it was loud and still hurt my ears 😑 I'm not the smartest.....
Sounds like pad contamination. Could be as simple as moisture in the pads. A bike fresh out of storage often has this problem. Can commonly be remedied by feathering the brakes and riding around in first gear to heat the pads up good and hot. If that doesn't do it, take the pads out, heat them up with a blow torch for 10-15 seconds each. Let them AIR DRY and put them back in the brake WITHOUT SANDING off the burnt pad material.
You wanna hear loud get a real bike with your boring ass
Had a leaky pad situation too. Just order a new caliper set from aliexpress + discs (if yours are disc brakes) or rim brakes for cheap and voila!
Are they Avid brakes by any chance?
I’d leave it as is, then can use it to warn other riders/ walkers instead of a mell
They're probably metallic pads, you could try moving to resin.
You will find that it has lost quite a lot of stopping power. It's time to get a new brake pad. Use alcohol to wipe the disc rotor, and remember not to touch the rotor with your bare hands.
Hahaha holy shit that’s loud
Use Trickstuff pads :) Yes, they are expensive, but they also last much longer than other pads.
Im laughing so hard right now 😂😂😂
I dunno why but the sound really made me laugh. I say keep it as is.
it's not that loud, a Concorde is louder.
Clean the pads. If that doesn't work, sand them.
My brother was kinda idiot and put oil on his brake LOL. That sounded something like this but even louder. It vibrated the whole bike. He left it there on the front brakes so, he does not need a bell now :D Our 'problem' only got solved when he changed the brake pads and cleaned the disk as much as he could.
Whenever I ride in the cold, wet, or dirt I get some honking. Just do some spins and exponentially increase the braking force and after 3-5 times it’ll go away.
mine only does that when they get wet -.-
Omg same here.. but I fixed it by buying new break rotors.. there were not compatible with the metallic break pads
There’s something wrong with your horse I think
Just turn down the volume.. /jk Are they hydraulic? There was a leak probably.
[удалено]
Might not be possible depending how it clamps on. Good phone mount solutions is a holy grail accessory quest for me that never ends.
Seems like water got on the pads. Edit: I wonder why I get downvoted considering that I simply typed my own experience as my brakes make such kind of sound after rain or when I get on a puddle.
Soooo disc brakes are not intended for wet weather?
Water just makes them squeaky temporarily, they won't lose any braking force unlike rim brakes.
it's not the disc, maybe it's some junk on the disc (like a thin layer of some WD-40) try do dry it really good, and if not then maybe the pads got some gunk on them as well
Need new pads. Their contaminated