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

Weird Breaking Sound - New Bike

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.

Weird Breaking Sound - New Bike

Old 09-14-13, 10:28 PM
  #1  
llleafff
Newbie
Thread Starter
 
Join Date: Sep 2013
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Weird Sound When Applying Brakes - New Bike

So I got a Virtue Seven yesterday and when I got it home to ride, the back brakes made a really awful noise, sort of like a screeching sound. Also when I brake, the brake pads seem to leave a faint black mark on the rim, but it can easily be wiped away. If I'm moving the bike backwards and apply the rear brakes, it brakes smoothly and makes no sound, but if it's moving forward it makes the sound. I looked this up already but none of the solutions seem to apply to my type of brakes.

The bike comes with linear-pull brakes which don't allow me to fix the "toe in" at all. What could be causing this problem and how can I fix it?
llleafff is offline  
Old 09-14-13, 10:38 PM
  #2  
2 wheeler
Ancient Clydesdale
 
2 wheeler's Avatar
 
Join Date: Aug 2005
Location: Columbia River Gorge
Posts: 683

Bikes: Specialized Allez Elite

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
My guess would be brake shoe toe-in, as well.

Have you loosened the shoe bolt to see if you can adjust the toe-in?
2 wheeler is offline  
Old 09-15-13, 01:22 AM
  #3  
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 10,746

Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 645 Post(s)
Liked 17 Times in 16 Posts
Originally Posted by llleafff View Post
..........The bike comes with linear-pull brakes which don't allow me to fix the "toe in" at all. What could be causing this problem and how can I fix it?
Sure you don't have matching beveled washers?
Bill Kapaun is offline  
Old 09-15-13, 06:34 AM
  #4  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 6,119

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 613 Post(s)
Likes: 0
Liked 18 Times in 18 Posts
Problems like this are a reason to give a new bike a thorough test ride and close checking over BEFORE you accept delivery; the dealer is a lot more motivated to correct these problems before you sign on the line and hand over the bux.

I would take it back to the dealer and have them make it right if you cannot, as suggested by the above comments, adjust the toe-in to make it stop. If the toe-in cannot be adjusted with the supplied pads they might be able to substitute a different type of pads which either don't squeal or can be adjusted not to. Also, they are not expensive brakes ($10.99 MSRP) so cannot be expected to give the kind of performance that more costly and presumably more rigid brakes might. Finding this problem before accepting delivery may have put you into a better position to negotiate a discount on replacing the installed pads or brakes with better ones.
dsbrantjr is offline  
Old 09-15-13, 06:50 AM
  #5  
Blue Belly
Senior Member
 
Blue Belly's Avatar
 
Join Date: Aug 2013
Location: Vermont
Posts: 1,200

Bikes: Pinarello Montello, Merckx MX Leader, Merckx Corsa Extra, Pinarello Prologo, Tredici Magia Nera, Tredici Cross

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
If your brake pads make contact on the back of the pad before the front of the pad, the air gets compressed in there & tries to fight the contact. Causes that dreadful sound. Usually just takes loosening the bolt, with the brakes applied, & retightening so that they make even contact.
Blue Belly is offline  
Old 09-15-13, 09:54 AM
  #6  
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 10,746

Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 645 Post(s)
Liked 17 Times in 16 Posts
Originally Posted by Blue Belly View Post
If your brake pads make contact on the back of the pad before the front of the pad, the air gets compressed in there & tries to fight the contact. Causes that dreadful sound. Usually just takes loosening the bolt, with the brakes applied, & retightening so that they make even contact.
That one made my day!
Bill Kapaun is offline  
Old 09-15-13, 01:25 PM
  #7  
woodcraft
Senior Member
 
woodcraft's Avatar
 
Join Date: Apr 2012
Location: Nor Cal
Posts: 4,175
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1002 Post(s)
Likes: 0
Liked 20 Times in 12 Posts
I sometimes get that dreadful sound from compressed air,
But it seems like it's coming from the saddle area.
woodcraft is offline  
Old 09-15-13, 01:52 PM
  #8  
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: Metro Indy, IN
Posts: 15,450

Bikes: RANS V3 ti, RANS V-Rex, RANS Screamer

Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 461 Post(s)
Liked 15 Times in 15 Posts
Originally Posted by woodcraft View Post
I sometimes get that dreadful sound from compressed air,
But it seems like it's coming from the saddle area.
Try spraying the saddle with WD 40 or maybe air freshener.
__________________
RANS V3 Ti, RANS V-Rex, RANS Screamer
JanMM is offline  
Old 09-15-13, 02:47 PM
  #9  
Looigi
Senior Member
 
Looigi's Avatar
 
Join Date: Dec 2010
Posts: 8,951
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Bill Kapaun View Post
That one made my day!
It left me speechless.
Looigi is offline  

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.