Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-13-02, 06:43 AM   #1
unrelated
Senior Member
Thread Starter
 
Join Date: Jun 2002
Bikes:
Posts: 270
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Disc brake vibrating

I am using 2001 Avid mechanical disc brake, it's new.

When I want to stop on the road, I start to squeeze the brake lightly so that I can stop smoothly over a long distance, but the rear disc brake produced a vibration. At first it was small, than became pretty big, and all happen( vibration from small to big) within 5 to 7 seconds. This started only today, what can be the problem?
unrelated is offline   Reply With Quote
Old 07-13-02, 06:52 AM   #2
TTRider
Junior Member
 
TTRider's Avatar
 
Join Date: Aug 2001
Location: NEW JERSEY
Bikes:
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would have to say your problem is that under heat your disc is distorting. I would think that if you have a dial indicator that if you checked it cold it would be in spec. However, after it heats up from hard stopping it distorts.
Is it still under warranty? If not maybe it can be machined.
Good Luck and Happy Riding!
TTRider is offline   Reply With Quote
Old 07-13-02, 10:16 AM   #3
Maelstrom 
Wood Licker
 
Maelstrom's Avatar
 
Join Date: Apr 2002
Location: Whistler,BC
Bikes: Transition Dirtbag, Kona Roast 2002 and specialized BMX
Posts: 16,885
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had this problem with my hayes. It was missing some of the nuts holding it to the hub as well as 2 of the nuts were loose. The bike mech had forgotten locktight.
Maelstrom is offline   Reply With Quote
Old 07-13-02, 12:21 PM   #4
Dirtgrinder
Dances with Rocks
 
Dirtgrinder's Avatar
 
Join Date: Apr 2001
Location: Jefferson City, MO
Bikes:
Posts: 1,441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would also check the bolts holding the rotors on. Everyone of mine have come loose when new. After I tightened them once, they have never come loose again. Since yours is new I would definately check them.
__________________
If everything seems under control, you're just not going fast enough...

To become a registered member of BikeForums Click Here
Dirtgrinder is offline   Reply With Quote
Old 07-14-02, 05:15 AM   #5
unrelated
Senior Member
Thread Starter
 
Join Date: Jun 2002
Bikes:
Posts: 270
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
But if I brake hard over a short period of time, say 3 sec, nothing wrong will happen.
unrelated is offline   Reply With Quote
Old 07-16-02, 07:40 PM   #6
Mashimaro
Senior Member
 
Join Date: Jun 2002
Location: Vancouver
Bikes:
Posts: 104
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
could it be the pad material? what kind of cable housing are you using btw?
Mashimaro is offline   Reply With Quote
Old 07-17-02, 12:11 AM   #7
unrelated
Senior Member
Thread Starter
 
Join Date: Jun 2002
Bikes:
Posts: 270
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally posted by Mashimaro
could it be the pad material? what kind of cable housing are you using btw?
I am not expert in bike mechanics, so can you explain the cable housing part so that I can check it out? THanx!
unrelated is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 01:12 AM.