Go Back  Bike Forums > Bike Forums > Mountain Biking
Reload this Page >

Carbon Fiber rim/wheel failure?

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

Carbon Fiber rim/wheel failure?

Old 07-16-13, 11:04 AM
  #1  
Papa Wheelie
Senior Member
Thread Starter
 
Papa Wheelie's Avatar
 
Join Date: Jul 2011
Location: Boise, ID
Posts: 239

Bikes: Specialized Stumpjumper EVO R; Salsa Spearfish 2; Cannondale Six13

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Carbon Fiber rim/wheel failure?

What are the real risks associated with carbon fiber wheel failure? From what I have read, when carbon fails, it is quick, and catastrophic.

I have a set of carbon wheels that I have been riding on now for about 4 months, and I love everything about them. Light, stiff, keeping true, clean up easy, and look good.

I am starting to see small "blemishes" in the surface from going through rock gardens. I don't see anything that is alarmingly deep, but from what I have read, any mar in the surface is all carbon needs to fail.

Has anybody SEEN a catastrophic carbon wheel failure? With as much "Go Pro-ing" that is going on, coupled with the increasing number of carbon wheels out there, if they were failing, wouldn't there be some video documentation?

I've done some brief YouTube searches, but not coming up with much. Any insight to this would be great!
Papa Wheelie is offline  
Old 07-16-13, 11:57 AM
  #2  
Daspydyr 
Pedals, Paddles and Poles
 
Daspydyr's Avatar
 
Join Date: Oct 2009
Location: Vegas Valley, NV
Posts: 5,447

Bikes: Santa Cruz Tallboy, Ridley Noah, Scott Spark 20

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 535 Post(s)
Liked 8 Times in 7 Posts
I have a similar concern about blemishes in my frame. So far so good. The chatter on the internet is non existent as far as I can see. Hopefully someone chimes in.
__________________
I think its disgusting and terrible how people treat Lance Armstrong, especially after winning 7 Tour de France Titles while on drugs!

I can't even find my bike when I'm on drugs. -Willie N.
Daspydyr is offline  
Old 07-16-13, 12:02 PM
  #3  
ColinL
Two-Wheeled Aficionado
 
ColinL's Avatar
 
Join Date: Jul 2011
Location: Wichita
Posts: 4,903

Bikes: Santa Cruz Blur TR, Cannondale Quick CX dropbar conversion & others

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You need to stop moisture from getting into the carbon layup. To do that, you can do something as low-tech as covering it with black touch-up paint or even nail polish. There are more sophisticated ways if you prefer-- search the web.

You need to do this even if you only ride dry trails-- atmospheric humidity is a concern as well, although lower, if you chip through the clearcoat / top layer of carbon fiber.
ColinL is offline  
Old 07-16-13, 12:15 PM
  #4  
dminor 
Moar cowbell
 
dminor's Avatar
 
Join Date: Oct 2004
Location: The 509
Posts: 12,480

Bikes: Bike list is not a resume. Nobody cares.

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I honestly think you are more likely to encounter a failures like this:



i.e. - nipples pulling through spoke beds, clincher flange separating from the rim, etc, rather than full-on explosive, catasrophic failure. Think of how fiberglass fails: resin breaks apart and delaminates but the fibers (or mat) still loosely hold things together and the item generally holds its shape, just in weakened form.
__________________

Originally Posted by Mark Twain
"Don't argue with stupid people; they will drag you down to their level and then beat you with experience."
dminor is offline  
Old 07-16-13, 01:49 PM
  #5  
Papa Wheelie
Senior Member
Thread Starter
 
Papa Wheelie's Avatar
 
Join Date: Jul 2011
Location: Boise, ID
Posts: 239

Bikes: Specialized Stumpjumper EVO R; Salsa Spearfish 2; Cannondale Six13

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thank you all! I have heard about covering the blemishes with clear fingernail polish, so I believe I will start there. D, thanks for the picture. I will keep an eye on that, and HOPE that if I do get any kind of failure, that is it. I assume you might get a roll or two to figure out what is going on with that, over a wheel explosion. That, I ain't got time for!
Papa Wheelie is offline  
Old 07-19-13, 08:46 PM
  #6  
Dilberto
Senior Member
 
Dilberto's Avatar
 
Join Date: Apr 2007
Posts: 951
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I seriously considered carbon MTB wheels too, but the elements they are subject to and the thrashing from nature(rocks, twigs, roots, ruts)....I'd rather go with lighter Stans ArchEX or Easton Havens - just for a degree of "security."
Dilberto is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Birthday
Introductions
2
09-16-12 06:02 PM
info
Foo
2
03-28-09 12:25 AM
rollin
Foo
0
02-07-08 08:18 AM
Bernodu
Mountain Biking
0
01-27-05 09:27 AM

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

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.