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 08-03-07, 07:48 AM   #1
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Problem With Brake Cable

Hi. I have a problem with the cable for my front brake (a caliper). When I depress the lever, it does not retract (this is called brake binding I think?). If I push it back to where it was before, the end of the cable comes out of the adjusting barrell when I know it should stay in. Obviously the brakes are not working because when pressed in they do not retract.

Sorry if this seems like a basic question, but I can't find any thing on the internet to help me. Thanks for your time!
tommyd49 is offline   Reply With Quote
Old 08-03-07, 08:19 AM   #2
tellyho
Your mom
 
Join Date: Aug 2006
Bikes:
Posts: 2,541
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My assumptions: road bike, aero lever (cable routed under the handlebar tape), sidepull brake caliper.

Things to look at:

Simplest: WD40 the brake assembly around the bolt. Be careful not to get any on the tire or braking surface of the rim. Oil the cable, dripping onto the cable when the head sticks out of the lever. See if this frees things up.

More complex: loosen the bolt holding the brake in place to see if this frees up any movement. You may have to disassemble the caliper to clean and reassemble.

Hopefully one of the above will solve your problem.
tellyho is offline   Reply With Quote
Old 08-03-07, 08:54 AM   #3
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by tellyho View Post
My assumptions: road bike, aero lever (cable routed under the handlebar tape), sidepull brake caliper.
Yes that's all correct.

However I don't see how it can be to do with lubrication considering I bought the bike brand new a few weeks ago. At first the brakes were too close to the rim so I decreased the length of the cable under the clamping bolt (don't know if that's what it's called but it's the lowest bolt down the cable goes through). But because the brakes weren't very sharp like this, I tried to move the pads a bit closer. When I undid the clamping bolt of the cable I unscrewed it too far so the cable came out. This is where I started having problems. Any thoughts?
tommyd49 is offline   Reply With Quote
Old 08-03-07, 01:06 PM   #4
tellyho
Your mom
 
Join Date: Aug 2006
Bikes:
Posts: 2,541
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Park will be able to address it all better than I can. Check out their instructions:

http://www.parktool.com/repair/readhowto.asp?id=22
tellyho is offline   Reply With Quote
Old 08-03-07, 02:12 PM   #5
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by tommyd49 View Post
Yes that's all correct.

However I don't see how it can be to do with lubrication considering I bought the bike brand new a few weeks ago. At first the brakes were too close to the rim so I decreased the length of the cable under the clamping bolt (don't know if that's what it's called but it's the lowest bolt down the cable goes through). But because the brakes weren't very sharp like this, I tried to move the pads a bit closer. When I undid the clamping bolt of the cable I unscrewed it too far so the cable came out. This is where I started having problems. Any thoughts?
If you just bought it, take it back to the shop. Let them figure out what it is and they will tell you.
__________________
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 08-03-07, 02:21 PM   #6
roadfix
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Bikes:
Posts: 18,589
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Isolate the problem. Disconnect brake cable from caliper and see how the cable feels when you pull the brake lever.
roadfix is offline   Reply With Quote
Old 08-03-07, 02:24 PM   #7
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sorry but I bought the bike off the internet because it saved so much money. I'd much rather sort it out my self than go through all the hassle.

The problem is the end of the cable housing (not the end with the nipple, the other end) is not fixed in the adjusting barrell as it should be. This must be why the brake is not retracting (and neither is the lever) when the pressure from the lever is released. I can't work out how to get it fixed in but I'd have thought it would be fairly easy.

Thanks for the link to Park Tools but I have tried all the bike site I know (that, Sheldon Brown, Jim Langley) and none of them have been able to help.

I'd really appreciate it if someone could help me on the issue!
tommyd49 is offline   Reply With Quote
Old 08-03-07, 02:30 PM   #8
roadfix
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Bikes:
Posts: 18,589
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
please post photo
roadfix is offline   Reply With Quote
Old 08-03-07, 02:32 PM   #9
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by roadfix View Post
Isolate the problem. Disconnect brake cable from caliper and see how the cable feels when you pull the brake lever.
Loose, but still exactly the same as it feels when the brake cable is connected.
tommyd49 is offline   Reply With Quote
Old 08-03-07, 02:34 PM   #10
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

Last edited by tommyd49; 08-03-07 at 03:01 PM.
tommyd49 is offline   Reply With Quote
Old 08-03-07, 03:11 PM   #11
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by tommyd49 View Post
Loose, but still exactly the same as it feels when the brake cable is connected.
Take out the front wheel. With the cable removed from the caliper, squeeze the caliper by hand at the brake pads. The calipers should spring back immediately and forcefully. If not, its the adjustment for the caliper arms, but I can't tell from the photo what type of calipers you have, so I can't tell yopu how to do it.
__________________
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 08-03-07, 03:36 PM   #12
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm not able to try that at the moment, but here is a picture of the brake: http://s192.photobucket.com/albums/z...nt=caliper.jpg
tommyd49 is offline   Reply With Quote
Old 08-03-07, 03:52 PM   #13
roadfix
hello
 
roadfix's Avatar
 
Join Date: May 2003
Location: Los Angeles
Bikes:
Posts: 18,589
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
If you remove the ferrul it should seat squarely within the caliper. Also, just wondering, is that cable housing long enough???

How about a front cockpit view of your bike........I have the feeling you're cable/housing is not set up correctly.
roadfix is offline   Reply With Quote
Old 08-03-07, 03:53 PM   #14
cny-bikeman
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Bikes: 2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fav), Jackson Rake 16, 1983 C'dale ST500.
Posts: 6,426
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 96 Post(s)
This process does not seem to be working very well for you. If you are unwilling to take the bike to a shop do you not have a friend or acquaintence familiar with bikes who can help?
cny-bikeman is offline   Reply With Quote
Old 08-04-07, 02:34 AM   #15
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
By the way, that first photo I posted was to show where the problem lies. The end of the cable housing is not staying fixed in to the adjusting barrell as it should.
tommyd49 is offline   Reply With Quote
Old 08-04-07, 03:00 AM   #16
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by San Rensho View Post
Take out the front wheel. With the cable removed from the caliper, squeeze the caliper by hand at the brake pads. The calipers should spring back immediately and forcefully. If not, its the adjustment for the caliper arms, but I can't tell from the photo what type of calipers you have, so I can't tell yopu how to do it.
I tried that. The calipers did not spring back in to place. Here is a picture of the brake:
http://s192.photobucket.com/albums/z...nt=caliper.jpg

And one of the front of the bike:
http://s192.photobucket.com/albums/z...rrent=bike.jpg

Last edited by tommyd49; 08-04-07 at 03:12 AM.
tommyd49 is offline   Reply With Quote
Old 08-04-07, 05:00 AM   #17
blamp28
Bikaholic
 
blamp28's Avatar
 
Join Date: Dec 2006
Location: Western, Michigan
Bikes: Trek Fuel 90, Giant OCR, Rans Screamer Tandem
Posts: 1,465
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Looks to me like you simply need to adjust the cable tension. That thing is incredibly loose. Look on park tools or Sheldons sites for specifics. If these do not help, you're better off taking it to a shop.
blamp28 is offline   Reply With Quote
Old 08-04-07, 08:44 AM   #18
Akadis
Senior Member
 
Akadis's Avatar
 
Join Date: Nov 2005
Location: Hobart
Bikes: Schwinn, National, Tassie Cycle, Avanti, Standish
Posts: 126
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Yes, you need to tighten the inner cable. The end of the outer cable shown in your picture is simply held in the socket by the tension of the inner cable. To tighten the inner cable, loosen the inner cable clamp nut located on the end of the brake arm, squeeze the brake pads against the rim, pull the inner cable through the clamp nut until the outer cable sits properly in the sockets at both ends, and then tighten the clamp nut. You need three hands to do it! It helps to use pliers to grab the end of the inner cable and pull it through the clamp nut.

Having done that, if the inner cable is not tight enough it can be further tightened by UNscrewing the knurled collar on the outer cable, or redo the previous step to get it tighter. If the cable is too tight after your initial setting (the brakes are gripping the rim without you pulling the brake lever), loosen the clamp nut on the brake arm a little, squeeze the brake lever gently to pull a bit of cable (about 2 or 3mm)through the clamp nut, and retighten the nut.
Akadis is offline   Reply With Quote
Old 08-04-07, 12:15 PM   #19
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by tommyd49 View Post
I tried that. The calipers did not spring back in to place. Here is a picture of the brake:
http://s192.photobucket.com/albums/z...nt=caliper.jpg

And one of the front of the bike:
http://s192.photobucket.com/albums/z...rrent=bike.jpg
With the cable COMPELETEY REMOVED FROM THE BRAKE it still did not spring back? If that really is the case, then loosen the bolt in the picture on the right side of the caliper until it snaps back when you squeeze it by hand as I described before.

The brake is also very poorly centered around the front wheel.
__________________
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 08-05-07, 06:40 AM   #20
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks every one, it's now completely sorted!!!
tommyd49 is offline   Reply With Quote
Old 08-05-07, 10:04 AM   #21
San Rensho 
Senior Member
 
Join Date: Oct 2005
Bikes:
Posts: 5,559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by tommyd49 View Post
Thanks every one, it's now completely sorted!!!
Well, what was it, lots of money riding on the result?
__________________
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 08-05-07, 10:27 AM   #22
tommyd49
Senior Member
Thread Starter
 
Join Date: Aug 2007
Location: Cambridge, UK
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by San Rensho View Post
Well, what was it, lots of money riding on the result?
The brake pads weren't springing back so I just did what you advised my good friend.
tommyd49 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 05:52 PM.