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 09-24-06, 12:39 PM   #1
jdgreen
Senior Member
Thread Starter
 
Join Date: Mar 2006
Location: eastern NC
Bikes: serrotta CDA, litespeed tuscany, Seven ti axiom
Posts: 92
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Black shavings on non drive side of fsa

I am having black shavings occur on the non drive side of my FSA SLK crank. I pulled off the 1st one after it got about 1/4 inch long and another has started. The crank has about 1500 miles on it. Is this normal break in or do I have a problem?
jdgreen is offline   Reply With Quote
Old 09-24-06, 01:15 PM   #2
slim_77
Senior Member
 
slim_77's Avatar
 
Join Date: Jul 2006
Location: chicago,Il
Bikes: yes please
Posts: 2,401
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
They are molded carbon so they should not have any "shavings" unless there was a defect in the mold/a problem from the factory...I say they are defective, take 'em back. (Just to be sure: you have not been resting the bike (cranks) against any objects that can begin a rip in the arms, have you? Crashes, swipes...

...anyone else?
slim_77 is offline   Reply With Quote
Old 09-24-06, 01:39 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)
You need to be a bit more descriptive than just black shavings.
operator is offline   Reply With Quote
Old 09-24-06, 06:29 PM   #4
jdgreen
Senior Member
Thread Starter
 
Join Date: Mar 2006
Location: eastern NC
Bikes: serrotta CDA, litespeed tuscany, Seven ti axiom
Posts: 92
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
One long solid shaving slowly develops from the crank where it is turning inside the the race over the outboard bearing. It is if it is slowly shaving the carbon as the cranks are turned.
jdgreen is offline   Reply With Quote
Old 09-24-06, 06:34 PM   #5
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: 28,917
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 94 Post(s)
Something is dreadfully wrong, either with the crank arm or how it was installed on the bottom bracket bearing cup. There should NEVER be shavings like you describe and the crank is, or very soon will be, structurally damaged.

Go see the LBS who installed the crank or re-read the installation directions if you did it yourself. Fix it NOW.
HillRider 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 06:37 AM.