Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Rim Brake Squeal Pandemic

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Rim Brake Squeal Pandemic

Old 08-13-20, 09:12 PM
  #1  
La Brea Bike 
Senior Member
Thread Starter
 
Join Date: Mar 2018
Location: Los Angeles
Posts: 281

Bikes: 2002 Litespeed Ultimate, 1984 Raleigh Grand Prix, 1984 Raleigh Super Course, 1985 Raleigh Super Course, 1984 Raleigh Prestige, 1985 Raleigh Prestige, 1985 Raleigh 555 RSL 2020 Raleigh Tamland 1928 Hercules 1938 Raleigh Sports 1985 Landshark "Raleigh"

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 126 Post(s)
Liked 59 Times in 32 Posts
Rim Brake Squeal Pandemic

I am having a rash of bikes coming into my shop that have front brake squeal that we cant seem to fix. The majority are hybrids and cruisers. Replacement of brake pads, towing the pads in, sanding the machine braking surface, and cleaning the braking surface with alcohol do little to help. What are your best practices? Are we missing something? Have you found pads that address this? Thanks!
La Brea Bike is offline  
Old 08-14-20, 05:45 AM
  #2  
andrewclaus
Senior Member
 
Join Date: Feb 2012
Location: Golden, CO
Posts: 1,824

Bikes: 2016 Fuji Tread

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 316 Post(s)
Liked 90 Times in 72 Posts
Is there a majority type of caliper?

I see a lot of donated bikes at a non-profit. If it's a linear pull caliper, it's rare that correct toe-in doesn't fix a squeal.

If it's a cantilever, sometimes it's a chronic problem that can be solved with a fork-mounted cable stop, but I seldom take the time and effort to do that for a cheap bike. If toe-in doesn't fix it, I'll replace the shoes. If that doesn't do it, I'll try toeing them out and sometimes that works, at least for a while.
andrewclaus is offline  
Old 08-14-20, 07:41 AM
  #3  
La Brea Bike 
Senior Member
Thread Starter
 
Join Date: Mar 2018
Location: Los Angeles
Posts: 281

Bikes: 2002 Litespeed Ultimate, 1984 Raleigh Grand Prix, 1984 Raleigh Super Course, 1985 Raleigh Super Course, 1984 Raleigh Prestige, 1985 Raleigh Prestige, 1985 Raleigh 555 RSL 2020 Raleigh Tamland 1928 Hercules 1938 Raleigh Sports 1985 Landshark "Raleigh"

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 126 Post(s)
Liked 59 Times in 32 Posts
Originally Posted by andrewclaus View Post
Is there a majority type of caliper?

I seeIf toe-in doesn't fix it, I'll replace the shoes. If that doesn't do it, I'll try toeing them out and sometimes that works, at least for a while.
Yeah, it's V brakes in the vast majority. Unfortunately we have even had some new bike assemblies lately that have it too. Most recently was a Retrospec .It's hard for me to deliver a new bike with the condition. Interesting on the toe out. Not sure why I hadn't thought of trying that. Ill have to give it a try. Thanks!

Last edited by La Brea Bike; 08-14-20 at 08:01 AM.
La Brea Bike is offline  
Old 08-14-20, 07:46 AM
  #4  
natloz
Senior Member
 
Join Date: Jun 2020
Location: Alberta, Canada
Posts: 156

Bikes: Bianchi Alfana, Specialized Hardrock, Specialized Sirrus Pro SS Conversion

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 48 Times in 33 Posts
Had good luck with Kool Stop pads
natloz is offline  
Old 08-14-20, 08:03 AM
  #5  
La Brea Bike 
Senior Member
Thread Starter
 
Join Date: Mar 2018
Location: Los Angeles
Posts: 281

Bikes: 2002 Litespeed Ultimate, 1984 Raleigh Grand Prix, 1984 Raleigh Super Course, 1985 Raleigh Super Course, 1984 Raleigh Prestige, 1985 Raleigh Prestige, 1985 Raleigh 555 RSL 2020 Raleigh Tamland 1928 Hercules 1938 Raleigh Sports 1985 Landshark "Raleigh"

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 126 Post(s)
Liked 59 Times in 32 Posts
Originally Posted by natloz View Post
Had good luck with Kool Stop pads
Any specific style? I believe they make a variety of models.
La Brea Bike is offline  
Old 08-14-20, 08:06 AM
  #6  
natloz
Senior Member
 
Join Date: Jun 2020
Location: Alberta, Canada
Posts: 156

Bikes: Bianchi Alfana, Specialized Hardrock, Specialized Sirrus Pro SS Conversion

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 48 Times in 33 Posts
I buy basic ones from a store called Mountain Equipment Co-op (MEC) - https://www.mec.ca/en/product/5023-2...xt=kool%20stop
But I am mostly fixing up vintage road bikes, so may not be relevant to all canti's you are working on.
natloz is offline  
Old 08-14-20, 09:26 AM
  #7  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,278 Times in 798 Posts
Originally Posted by La Brea Bike View Post
Any specific style? I believe they make a variety of models.
they have a variety of models to suit the variety of brakes made. you were not specific..
Look A their website ? found them with your distributors.? https://www.koolstop.com/

threaded or plain post, road or mountain ?

replaceable insert or molded in, one piece.?

Rubber hardens over time so fresh pads act differently than old dry hard ones..






..

Last edited by fietsbob; 08-14-20 at 09:30 AM.
fietsbob is offline  
Old 08-14-20, 09:28 AM
  #8  
rydabent
Senior Member
 
Join Date: Apr 2010
Location: Lincoln Ne
Posts: 8,190

Bikes: RANS Stratus TerraTrike Tour II

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 1799 Post(s)
Liked 303 Times in 192 Posts
I sometimes wonder how long some brake pads sit on the shelf before they are used. When new stock comes in, it should be put behind the old stock. Rubber/plastic ages.
rydabent is offline  
Old 08-14-20, 09:36 AM
  #9  
natloz
Senior Member
 
Join Date: Jun 2020
Location: Alberta, Canada
Posts: 156

Bikes: Bianchi Alfana, Specialized Hardrock, Specialized Sirrus Pro SS Conversion

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 48 Times in 33 Posts
Originally Posted by fietsbob View Post
they have a variety of models to suit the variety of brakes made. you were not specific..
Look A their website ? found them with your distributors.? Kool Stop International - High Performance Bicycle Brake Pads Since 1977

threaded or plain post, road or mountain ?

replaceable insert or molded in, one piece.?

Rubber hardens over time so fresh pads act differently than old dry hard ones..






..
I would also say that the Kool Stops likely use the same polymers across types, it is a great brake. I find old rubber and humidity = SQUEEEEEAL
natloz is offline  
Likes For natloz:
Old 08-14-20, 09:43 AM
  #10  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,278 Times in 798 Posts
I'm using their Salmon Compound pads in the Magura HS Version , In a wet place by the sea for 12 years now..
& on my Brompton, old & New, and on virtually every bike I own. for 30+ years..


.. the company is located in the region of greater Portland, Oregon..
fietsbob is offline  
Likes For fietsbob:
Old 08-14-20, 09:45 AM
  #11  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,278 Times in 798 Posts
OK its not Hurricane alley kind of humidity.. We're in a dry season now,,
fietsbob is offline  
Old 08-14-20, 10:00 AM
  #12  
Chuckles1
Senior Member
 
Join Date: Oct 2019
Posts: 149
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 68 Post(s)
Likes: 0
Liked 34 Times in 25 Posts
Kool Stop Red

I got new wheels this year and had squeal and shudder on front wheel with my Kool Stop black and salmon pads. I put on softer red pads, and it's been fine ever since.
Chuckles1 is offline  
Likes For Chuckles1:
Old 08-14-20, 10:19 AM
  #13  
La Brea Bike 
Senior Member
Thread Starter
 
Join Date: Mar 2018
Location: Los Angeles
Posts: 281

Bikes: 2002 Litespeed Ultimate, 1984 Raleigh Grand Prix, 1984 Raleigh Super Course, 1985 Raleigh Super Course, 1984 Raleigh Prestige, 1985 Raleigh Prestige, 1985 Raleigh 555 RSL 2020 Raleigh Tamland 1928 Hercules 1938 Raleigh Sports 1985 Landshark "Raleigh"

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 126 Post(s)
Liked 59 Times in 32 Posts
Originally Posted by fietsbob View Post
they have a variety of models to suit the variety of brakes made. you were not specific..
Look A their website ? found them with your distributors.? Kool Stop International - High Performance Bicycle Brake Pads Since 1977

threaded or plain post, road or mountain ?

replaceable insert or molded in, one piece.?

Rubber hardens over time so fresh pads act differently than old dry hard ones..






..
I was asking about the compound varieties.
La Brea Bike is offline  
Old 08-14-20, 10:23 AM
  #14  
La Brea Bike 
Senior Member
Thread Starter
 
Join Date: Mar 2018
Location: Los Angeles
Posts: 281

Bikes: 2002 Litespeed Ultimate, 1984 Raleigh Grand Prix, 1984 Raleigh Super Course, 1985 Raleigh Super Course, 1984 Raleigh Prestige, 1985 Raleigh Prestige, 1985 Raleigh 555 RSL 2020 Raleigh Tamland 1928 Hercules 1938 Raleigh Sports 1985 Landshark "Raleigh"

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 126 Post(s)
Liked 59 Times in 32 Posts
Originally Posted by Chuckles1 View Post
I got new wheels this year and had squeal and shudder on front wheel with my Kool Stop black and salmon pads. I put on softer red pads, and it's been fine ever since.
I'll seek some of those out to try!
La Brea Bike is offline  
Old 08-14-20, 10:32 AM
  #15  
delbiker1 
Mother Nature's Son
 
delbiker1's Avatar
 
Join Date: Mar 2016
Location: Sussex County, Delaware
Posts: 1,554

Bikes: Early 90's Ochsner road, 2006 Schwinn SS DBX, 2014 Orbea Avant MD30, 2004 Airborne Zeppelin TI, 2003 Lemond Poprad, 1989? Fuji Ace, 2001 Lemond Tourmalet, 2014? Soma Smoothie

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 419 Post(s)
Liked 350 Times in 220 Posts
Originally Posted by La Brea Bike View Post
Any specific style? I believe they make a variety of models.
KoolStop salmon, orange, pads.
delbiker1 is offline  
Old 08-14-20, 10:41 AM
  #16  
Pop N Wood
Senior Member
 
Join Date: Jun 2020
Location: Maryland
Posts: 478

Bikes: 1982 Bianchi Sport SX, Rayleigh Tamland 1, Rans V-Rex recumbent, Fuji MTB, 80's Cannondale MTB with BBSHD ebike motor, 70's vintage Schwinn Continental and Suburban

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 226 Post(s)
Liked 164 Times in 109 Posts
Another trick I use is to chamfer the edges of the brake pad itself with a small belt sander or file. Works wonders on automotive brake pads as well.
Pop N Wood is offline  
Old 08-14-20, 10:49 AM
  #17  
natloz
Senior Member
 
Join Date: Jun 2020
Location: Alberta, Canada
Posts: 156

Bikes: Bianchi Alfana, Specialized Hardrock, Specialized Sirrus Pro SS Conversion

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 32 Post(s)
Liked 48 Times in 33 Posts
Originally Posted by La Brea Bike View Post
I'll seek some of those out to try!
Also once installed, can be good to go for a rip down a hill and burn them in by applying gentle pressure for the hill (take off the outer layer oxidation that may exist). That has taken some squeak out for me at least.
natloz is offline  
Old 08-14-20, 01:41 PM
  #18  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,278 Times in 798 Posts
Originally Posted by La Brea Bike View Post
I was asking about the compound varieties.
It's listed on their website.. https://www.koolstop.com/english/compounds.html







....

Last edited by fietsbob; 08-14-20 at 01:45 PM.
fietsbob is offline  
Old 08-14-20, 01:51 PM
  #19  
BoraxKid
Senior Member
 
Join Date: Jul 2020
Location: Parts Unknown
Posts: 354
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 325 Post(s)
Likes: 0
Liked 94 Times in 62 Posts
Originally Posted by La Brea Bike View Post
I am having a rash of bikes coming into my shop that have front brake squeal that we cant seem to fix. The majority are hybrids and cruisers. Replacement of brake pads, towing the pads in, sanding the machine braking surface, and cleaning the braking surface with alcohol do little to help. What are your best practices? Are we missing something? Have you found pads that address this? Thanks!
It's been a while since I've dealt with V-brake squeal, but IME, sanding the brake surface of the rim and the face of the pads, followed by careful toe-in always fixed the issue. If that's not working for you, I would try different sanding materials and closer inspection of the brake pads. There has to be some feature on the face of the pad that is creating the sound in the first place. Removing that feature should eliminate the sound, buy YMMV.
BoraxKid is online now  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.