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

Disk brakes squealing and losing breaking power

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.

Disk brakes squealing and losing breaking power

Old 06-05-17, 05:05 PM
  #1  
Fritzov
Member
Thread Starter
 
Join Date: Sep 2016
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Disk brakes squealing and losing breaking power

I have a Salsa Fargo 2017 and lately the brakes have been squealing a lot and i am also noticing it loosing breaking power.

What is usually causing disk brake to behave like this and how do i fix it?

Last edited by cb400bill; 06-05-17 at 06:26 PM.
Fritzov is offline  
Old 06-06-17, 03:16 AM
  #2  
coominya
Senior Member
 
coominya's Avatar
 
Join Date: Aug 2016
Location: Brisbane Aust
Posts: 1,643

Bikes: Giant ToughRoad Giant talon

Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 703 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
How many miles have you put on the brake pads? Could they be worn out? Have you got any contamination on the rotors? See any discoloration there?
coominya is offline  
Old 06-06-17, 07:54 AM
  #3  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 41,398

Bikes: 8

Mentioned: 188 Post(s)
Tagged: 0 Thread(s)
Quoted: 6839 Post(s)
Likes: 0
Liked 217 Times in 180 Posts
How did you first ride the bike, new? bed the pads in with a few 12~20 smooth non aggressive stops?
fietsbob is online now  
Old 06-06-17, 01:43 PM
  #4  
ammarolli
Senior Member
 
Join Date: May 2015
Location: Reykjavík
Posts: 187

Bikes: Trek Crossrip 2 2017, Cube Cruve Pro 2015 and Berlín Dutch Bike 3 speed 2014

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 37 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Are those brakes hydraulic or cable actuated?

Check and see if the pads are worn out if not clean them and the rotor with Isopropyl alcohol and see if you get more braking power.
ammarolli is offline  
Old 06-06-17, 07:44 PM
  #5  
Fritzov
Member
Thread Starter
 
Join Date: Sep 2016
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by coominya View Post
How many miles have you put on the brake pads? Could they be worn out? Have you got any contamination on the rotors? See any discoloration there?
I have been doing around 300km per week since mid March when i got the bike.
Fritzov is offline  
Old 06-06-17, 08:33 PM
  #6  
GeneO 
Cyclopath
 
GeneO's Avatar
 
Join Date: May 2010
Posts: 2,133

Bikes: 2018 Roubaix Expert Di2, 2016 Diverge Expert X1, Felt 2012 F55X

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Likes: 0
Liked 1 Time in 1 Post
As already asked, did you bed in the brakes and could they have been contaminated. It doesn't take much oil contamination to completely loose stopping power for example.
__________________
Manbearpig & Redtail
GeneO is offline  
Old 06-07-17, 02:03 AM
  #7  
coominya
Senior Member
 
coominya's Avatar
 
Join Date: Aug 2016
Location: Brisbane Aust
Posts: 1,643

Bikes: Giant ToughRoad Giant talon

Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 703 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Fritzov View Post
I have been doing around 300km per week since mid March when i got the bike.
Have you got any contamination on the rotors? See any discoloration there?
coominya is offline  
Old 06-12-17, 04:19 PM
  #8  
Fritzov
Member
Thread Starter
 
Join Date: Sep 2016
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by GeneO View Post
As already asked, did you bed in the brakes and could they have been contaminated. It doesn't take much oil contamination to completely loose stopping power for example.
I never did anything with the brakes when i got the bike, i just started riding.

I tried to get the pads out and clean them from oil but only gave me some breaking power back but its not gone again.
Fritzov is offline  
Old 06-12-17, 11:40 PM
  #9  
GeneO 
Cyclopath
 
GeneO's Avatar
 
Join Date: May 2010
Posts: 2,133

Bikes: 2018 Roubaix Expert Di2, 2016 Diverge Expert X1, Felt 2012 F55X

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 378 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by Fritzov View Post
I never did anything with the brakes when i got the bike, i just started riding.

I tried to get the pads out and clean them from oil but only gave me some breaking power back but its not gone again.
You have to clean the rotors with alcohol as well, follow by riding and apply brakes, then repeat. It will take several times. Once you have them working again, bed them in.
GeneO is offline  
Old 06-13-17, 03:04 AM
  #10  
Fritzov
Member
Thread Starter
 
Join Date: Sep 2016
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by GeneO View Post
You have to clean the rotors with alcohol as well, follow by riding and apply brakes, then repeat. It will take several times. Once you have them working again, bed them in.
ok i just cleaned the rotors with water and soap once.

I will try as you suggest before handing the bike over to the mechanic.
Fritzov is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Metal Man
Advocacy & Safety
52
08-25-14 05:05 PM
calamarichris
Southern California
8
12-03-09 08:07 AM
lung
Road Cycling
5
11-24-09 03:35 PM
vantassell
Road Cycling
0
03-16-07 11:36 PM
GuitarWizard
Northeast
2
03-13-07 04:32 AM

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

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