- Carbon Fiber Bike Frames
- Tell If Carbon Fiber Bike Cracked Download
- Tell If Carbon Fiber Bike Cracked Screen
- Carbon Fiber Bikes On Sale
- Carbon Fiber Bikes Purchase
A used bike is a risk. A used carbon bike is a bigger risk. Factor that into what you are willing to pay. I got one at such a good price if the frame was cracked it was still wroth the it for the components. – paparazzo Aug 11 '14 at 17:39.
Rat City Bikes
Carbon fiber parts should be considered disposable or consumable, like a Bic lighter! We will not work on any steel frame bike with a carbon fiber seatpost because carbon fiber seatposts are forbidden in steel frames due to the pinching force of the clamp. Carbon fiber seatposts require that the clamping force be opposite or 90 degrees from the. Aug 18, 2018 Carbon Fiber Bike Failures Spotlight Dangers Of Counterfeits High-end bikes and components are often made of carbon fiber, which is strong and light-weight. But carbon fiber bikes.
Renthal: We advise that any product, carbon or aluminum, be replaced in the event of an accident. Once you have come off the bike, it’s hard to tell what forces may have gone through the handlebar as the bike cartwheeled down the trail. Particularly with carbon fiber, it may not be evident that there is. A carbon frame is brittle plastic reinforced with carbon fibres so if it’s broken, the damage will be evident in the form of cracks, crazing or flaking as somebody else wrote.
Carbon Fiber Bike Frames
Carbon Fiber Care and Warnings
WE DO NOT HATE CARBON FIBER, WE ARE CONCERNED ABOUT ITS IMPROPER USE!
However, let it be known that Aaron's Bicycle Repair, Inc. does not condone or endorse the use of carbon fiber for everyday cyclists.
Again, we are not anti carbon fiber. We are simply concerned about our customer's safety since carbon fiber has the potential to be a very dangerous product.
Our experience of finding many damaged carbon fiber parts over the years has given us this opinion.
The real world is much tougher on carbon fiber than any testing lab! People are not always as careful as they should be with their bicycles.
Carbon fiber parts should be treated with the same care as a fine crystal wine glass!
Carbon fiber is designed for RACE USE ONLY!
It should only be worked on by the most highly skilled mechanics (like our staff!).
Carbon fiber is not user serviceable! It takes skill and experience to handle.
Torque values (listed on stems, for example) are for all metal parts. Carbon is different and requires a careful hand and special preparation during installation or servicing.
We do work on many racer's carbon fiber dream machines but we are always exacting and specific about what is OK or not OK.
For example too many spacers under the stem can be in conflict with the manufactuer's service instructions.
Carbon fiber cannot be visually inspected and many parts have only a one-season life span!
Regardless of use, storage or age, no carbon bike or fork should be used after 10 years.
Modern (2017) carbon is quite amazing and much safer than older carbon because of better quality control and knowledge from experience.
Alway buy from a well known brand and avoid cheap carbon at all costs!
Will not do any work on any bike with visibly damaged carbon fiber.
Not even a flat! Bring us the wheel instead.
Any carbon fiber bike or part that has been in a crash or hit by a car should be replaced!
Watch the below video to find out why.
We will not work on repaired carbon fiber frames repaired by anyone other than the below links or the original manufacturer.
We recommend Calfee or Joe's Carbon Solutions for carbon fiber frame repair. We will not work on repaired carbon fiber forks or components. We will not work on repaired carbon frames unless you have a certificate from a reputable company.
Carbon fiber parts should be considered disposable or consumable, like a Bic lighter! Apple music converter for mac torrent..
We will not work on any steel frame bike with a carbon fiber seatpost because carbon fiber seatposts are forbidden in steel frames due to the pinching force of the clamp. Carbon fiber seatposts require that the clamping force be opposite or 90 degrees from the slot. Also, carbon and steel will bond together worse than any aluminum post ever has.
Carbon fiber steer tubes should NEVER have a star-fangled nut driven into them! Some Cannondale bikes have that done and that is the only exception we will work on. Industry standard for spacers under a stem is 40mm. Easton allows 50mm. Carbon steer tube forks must have the original stem of the same brand installed. Some stems are not compatible with carbon steer tubes.
THE NUMBER ONE DAMAGED CARBON PART WE SEE IS THE SEATPOST. NUMBER TWO IS THE STEER TUBE.
Both are very high stress items and should be replaced with metal. (see pictures below).
EVERYTHING ELSE! (including but not limited to):
Trek's Official Carbon Fiber Warning
Trek's Carbon Steer Tube Care
Specialized's Fork Installation Instructions
Easton's Fork Installation Instructions
Reynold's Fork Installation Instructions
Why Thompson doesn't use carbon fiber.
Busted Carbon Blog
Tell If Carbon Fiber Bike Cracked Download
If you have a carbon fiber steer tube, we STRONGLY recommend this aluminum insert.
If you buy it we can install it.
Tell If Carbon Fiber Bike Cracked Screen
Our 2007 crop of broken carbon fiber:
Summer 2009 Crop
Here is what Lon Kennedy, owner of Nova Cycle Supply (a wholesale supplier of Columbus carbon forks) has to say:
From an email:
Carbon Fiber Bikes On Sale
From: Lon Kennedy
To: Tech Info at Nova
Sent: Monday, January 28, 2008 9:47 AM
Subject: Re: Carbon Steer Tube Damage?
Given the pictures, and not the part itself, my opinion is that the steerer appears to have cracks that would make the fork unsuitable for use.
Possible reasons for failure generally fall into 2 categories. My explanations are general and since I do not have the part in front of me to make a specific determination, are for your reference.
1) Placement of the expander cap in an area not constrained or supported on the circumference by the stem or overtightening the expander cap.
As you are probably aware, general correct assembly practice is to make sure that the expander itself is surrounded by the stem to support it and prevent rupture failures.
Perhaps, too many spacers?
2) The stem has some areas of contact that are not carefully deburred as part a correct assembly routine. If the slot or the top or bottom or the stem is not properly deburred a crack can be initiated by the non-deburred area (sharp edge) scoring the steerer tube and initiating a crack.
My opinion is that the fork is unsafe to use given the appearance of cracks.
Hopefully this will help you in your assessment.
Below are the pictures of the fork discussed in the above email.
Below is damage to a fork from SKS Race Blade fenders.
The damage is caused vibration and the dirt that gets under the mount.
Current Race Blade fenders come with clear plastic protective stickers. You can also use several layers of electrical tape.
Bike Reflector thru Chainstay!