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 07-16-11, 01:29 PM   #1
vyper76
Junior Member
Thread Starter
 
Join Date: Feb 2011
Bikes:
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Internal Cable Routings

I just installed the rear brake cable on my new carbon bike with internal cable routings... I set everything up, but then when I went to brake, the cable inside the frame made a scratching sound... is this normal? or is there some trick to get it to stop? or did I just set up the cable wrong?

thanks
vyper76 is offline   Reply With Quote
Old 07-16-11, 01:30 PM   #2
reptilezs
Senior Member
 
Join Date: Sep 2004
Location: boston, ma
Bikes:
Posts: 2,852
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
what frame?
reptilezs is offline   Reply With Quote
Old 07-16-11, 01:34 PM   #3
vyper76
Junior Member
Thread Starter
 
Join Date: Feb 2011
Bikes:
Posts: 10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by reptilezs View Post
what frame?
Its a Boyd B930

http://boydbikes.blogspot.com/2010/1...930-frame.html

http://boydcycling.com/bikes/B930.html

Last edited by vyper76; 07-16-11 at 02:14 PM.
vyper76 is offline   Reply With Quote
Old 07-16-11, 06:34 PM   #4
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,847
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
Does the cable require full length housing including the part inside the frame tube or just a bare inner wire? If it is supposed to have the housing run all the way through the frame and you left it out, that could be your problem.
HillRider is offline   Reply With Quote
Old 07-16-11, 09:35 PM   #5
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Posts: 29,662
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 218 Post(s)
Hillrider raises a good point. Unless the frame has built in fulcrums (cable stops) you were supposed to thread the entire cable with housing.

Another possibility if your frame runs only the bare wire internally is that you somehow crossed one over the other inside the frame, and you're hearing one saw across the other. You can sometimes test for this by varying the tension in one cable while watching the other derailleur for response.

One more possibility is you somehow mis-routed it through or past the BB, and it's sawing at the inside corner within the BB shell.

Lastly, some bikes route the cables crossed in front so the RD wire enters the downtube on the left, and FD wire on the right. They do this to open up the HB to frame curve a bit. With this arrangement, you might hear some scraping where the cables touch as they cross inside the downtube.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FBinNY 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 09:14 AM.