Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Carbon Fiber frame chip/scratch question

Notices
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.

Carbon Fiber frame chip/scratch question

Old 03-31-10, 12:05 AM
  #1  
cycle life
Le Tour
Thread Starter
 
cycle life's Avatar
 
Join Date: May 2007
Location: Chicago
Posts: 154

Bikes: Schwinn Super Sport

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Carbon Fiber frame chip/scratch question

Im looking at this mono Q which has a light scuff on the top tube and two deeper paint chips/scratches.

What are your opinions?

The one on the left looks like its just though the top paint coat, revealing a silverish metallic material. The second one on the right looks like its one layer behind that one. But still dont see fibers...

A LBS is going to take a look at it tomorrow.




Last edited by cycle life; 03-31-10 at 12:18 AM.
cycle life is offline  
Old 03-31-10, 07:31 AM
  #2  
FLYcrash
Senior Member
 
Join Date: Mar 2008
Location: Chicago, IL, USA
Posts: 307

Bikes: 1974 Raleigh Sports

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Those look to be in the middle of the top tube? If so, I wouldn't worry much...
FLYcrash is offline  
Old 03-31-10, 07:41 AM
  #3  
ultraman6970
Senior Member
 
Join Date: Dec 2005
Posts: 7,859
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Little bit of duct tape and better than new!
ultraman6970 is offline  
Old 04-01-10, 03:48 PM
  #4  
wroomwroomoops
Sir Fallalot
 
wroomwroomoops's Avatar
 
Join Date: Jul 2006
Posts: 5,286
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 10 Times in 8 Posts
Carbon fiber composites are very sensitive to humidity. When the surface is scratched or otherwise damaged, the risk of humidity penetrating in and eventually causing delamination and structural failure failure. Worst of all, your average LBS won't be able to recognize the moment when your frame is close to quitting on you.

Unexpected, I know: the new and shiny carbon fiber is more sensitive than steel, to moisture, but much less predictable and monitorable.




However, if these scratches are all recent (less than, say, a couple of weeks old), then you have little to worry. Just coat them carefully with the same material the paint is made of.
wroomwroomoops is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.