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 11-28-06, 05:26 PM   #1
infernobutterfl
Senior Member
Thread Starter
 
Join Date: Sep 2006
Bikes:
Posts: 86
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
sanding or grinding sound on new trek 1000 breaks

Hello,

My GF got a new trek 1000 a while ago and everytime she breaks, there is this grinding or sanding sound... We took it to the LBS and they couldnt make the sound go away and ended up saying it was normal. Is it normal? Should I just switch out the breaks?
infernobutterfl is offline   Reply With Quote
Old 11-28-06, 05:34 PM   #2
ISeeDeadHuffies
D=RxT
 
Join Date: Sep 2006
Bikes:
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Change out the pads. This is pretty common with certain pad compounds. I recommend Kool Stop pads for the replacements.
ISeeDeadHuffies is offline   Reply With Quote
Old 11-28-06, 05:50 PM   #3
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If your bike breaks than you need a new one.
operator is offline   Reply With Quote
Old 11-28-06, 06:07 PM   #4
Steev
Senior Member
 
Steev's Avatar
 
Join Date: Jul 2005
Location: Backwoods of Ontario
Bikes:
Posts: 2,150
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Make sure the brakes are hitting the rims and not the tire sidewalls. There's been some mention of lower end Trek road bikes being shipped with calipers that don't have enough reach. If this is the case, go back to the dealer for new brake calipers, shoud be under warranty.
Steev is offline   Reply With Quote
Old 11-28-06, 06:38 PM   #5
the beef
100% USDA certified
 
the beef's Avatar
 
Join Date: Feb 2006
Location: Seattle -> NYC
Bikes: Bianchi XL EV2
Posts: 4,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Pads, and what Steev said.
the beef is offline   Reply With Quote
Old 11-28-06, 06:53 PM   #6
bassplayinbiker
Senior Member
 
Join Date: Jan 2005
Location: Kansas City
Bikes: Diamondback centurion. Home built tandem
Posts: 658
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You could have dirty rims. From my expirence dirty rims/ pads could cause a grinding sound. Also check the pads for little pieces of metal inbedded in them. If there are pieces of metal in the pads, pick them out with a knife.
bassplayinbiker is offline   Reply With Quote
Old 11-28-06, 08:32 PM   #7
Whiteknight
Senior Member
 
Join Date: Sep 2006
Bikes:
Posts: 466
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have a Trek Navigator as does the wife. My street bike is a Trek Multitrack. All 3 date to 2004. I had to replace a front wheel on the Multitrack. Tried 5 different sets (brands) of brake pads. All peeled aluminum from the Matrix 550 rim.

I recently switched my Navigator over to Cool Stop pads after switching the Multitrack over to them.

When I move the bikes from the yard to the car out front in the morning the brake pads give a bit of a grinding sound for the first few stops and then get quiet. We will make a 30 to 40 run on the Schuylkill River Trail and not hear a sound out of the brakes. Aluminum quickly forms a thin layer of oxide which the brake pads then scrub off in a few stops.

The LBS told me that they no longer use any toe in with brake pads. I found that it is sometimes necessary to use toe in with new pads.
Whiteknight is offline   Reply With Quote
Old 11-28-06, 08:50 PM   #8
supcom
You need a new bike
 
supcom's Avatar
 
Join Date: Aug 2002
Bikes:
Posts: 5,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Just take the wheel off and check the pads. there are probably some bits of debris embedded in the rubber. Use a knife point or tiny screwdriver to pry the debris out and all should be fine.
supcom is offline   Reply With Quote
Old 11-28-06, 08:55 PM   #9
well biked 
biked well
 
well biked's Avatar
 
Join Date: Jul 2005
Bikes:
Posts: 7,123
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Kool Stop salmon pads are the cure for braking ills of this sort. I'd reccommend cleaning the brake surface of the rims before installing the new pads-
well biked is offline   Reply With Quote
Old 11-28-06, 09:13 PM   #10
rmikkelsen
Senior Member
 
rmikkelsen's Avatar
 
Join Date: Sep 2006
Location: Plaistow, NH
Bikes: '78 Chris Kvale, '87 Paramount
Posts: 460
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
>>everytime she breaks<<

Bumper sticker: Caution, Driver Brakes Like a Little Girl
rmikkelsen is offline   Reply With Quote
Old 11-29-06, 10:22 AM   #11
charlisity
is full of it.
 
charlisity's Avatar
 
Join Date: Jul 2006
Location: Eureka, CA Humboldt County
Bikes: Giant Yukon, Trek 1000, Schwinn Super Sport Comp, World Sport and Le Tour IV, Haro Cyclocross
Posts: 221
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I was just at the Kool Stop website and I can't tell what would go on the Trek 1000. The Trek brakeset specs says they are Allow dual pivotw/ Sora shifters. Which Kool stops fit the Trek?
charlisity is offline   Reply With Quote
Old 11-29-06, 10:31 AM   #12
jsharr
You Know!? For Kids!
 
jsharr's Avatar
 
Join Date: Apr 2005
Location: Just NW of Richardson Bike Mart
Bikes: '05 Trek 1200 / '90 Trek 8000 / '? Falcon Europa
Posts: 6,157
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
The machined sidewalls on the Alex rims left lots of metal debris in the pads of my new Trek. Alex must not do a very good job of cleaning after machining the sidewalls.

I reccomend that you clean the sidewalls thoroughly. Take the wheels off the bie and clean the braking surface using something like a scotch brite pad and soapy water to wash any debris out of the grooves. Then take your pad inserts out and examine them for metal debris. I imagine you will find quite a bit. If you do, replace your pad inserts. This should solve your problem. It solved mine.

While you are at it, check your front caliper. Trek has put some really short reach front calipers on lately and the pads can contact the tire even at the lowest setting in the slot. If you find this, take it back to your dealer and have it addressed before you ruin a tire.
__________________
Are you a registered member? Why not? Click here to register. It's free and only takes 27 seconds! Help out the forums, abide by our community guidelines.
Quote:
Originally Posted by colorider View Post
Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.
jsharr is offline   Reply With Quote
Old 03-12-07, 04:45 AM   #13
Hoppy
London to Paris rider
 
Hoppy's Avatar
 
Join Date: Feb 2007
Location: Oxford, UK
Bikes: 1992 Team Marin
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've had this problem myself, with my 2004 Trek 1000. I'll check out the brake pads and
brake surfaces on the rims regularly
now. I just assumed it was the aluminium anodising rubbing off.

Thanks for the tips!
Hoppy is offline   Reply With Quote
Old 03-12-07, 08:15 AM   #14
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
As others have said, clean the rims. Also try taking off the pads and sanding them with 60 grit paper or a mill bastard file.
__________________
Il faut de l'audace, encore de l'audace, toujours de l'audace

1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1
San Rensho is offline   Reply With Quote
Old 03-12-07, 08:16 AM   #15
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Shimano pads are notoriously too hard. Get KoolStops. I use the black ones.

Al
Al1943 is offline   Reply With Quote
Old 03-12-07, 08:19 AM   #16
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Your brakes are not made by Trek, probably Shimano. Look for a small screw that when loosened will allow you to slide the rubber insert out. Take it to your LBS and find matching KoolStop pads.

Al
Al1943 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 01:11 AM.