Talk Composites - The Forum for Advanced Composites
Back
Login
Register
Login
Register
Home
»
Advanced Composites Forum
»
Projects
»
Recreational and Sports Equipment
»
Carbon bicycle wheel de-laminating a little
Carbon bicycle wheel de-laminating a little
Post Reply
Like
6
Carbon bicycle wheel de-laminating a little
View
Flat Ascending
Flat Descending
Threaded
Options
Subscribe to topic
Print This Topic
Goto Topics Forum
Author
Message
kendokelso
k
kendokelso
posted 5 Years Ago
ANSWER
HOT
Topic Details
k
Group: Forum Members
Posts: 4,
Visits: 7
Hi there,
I bought some 2nd hand carbon rimed (braking surface too) bicycle wheels from eBay. The front one is showing what I believe is some signs of age and impact damage. I'd like to attempt to repair these but have never worked with composites before. I'm thinking of getting some low viscosity resin, trying to inject into any cracks / gaps with a syringe, bag and clamp and then sand down with high grade of wet or dry.
Does that sound like it might work to someone more experienced than me? I'd spotted the product linked below and wondered is that the best thing to use to attempt the repair with?
Any help or advice welcome, I've attached an image to this thread also so you can hopefully see the issues I'm trying to correct.
Thanks in advance.
https://www.easycomposites.co.uk/300g-22-twill-kevlar-cloth
Reply
Like
6
GO
Merge Selected
Merge into selected topic...
Merge into merge target...
Merge into a specific topic ID...
Open Merge
Threaded View
Threaded View
Carbon bicycle wheel de-laminating a little
kendokelso
-
5 Years Ago
You need a very specialized resin to cope with the heat on a breaking surface. I only know of one resin that is not made for prepreging and has a Tg high enough that i would trust it, but can't think...
SleepingAwake
-
5 Years Ago
Thanks for the info. I'm an engineer by profession, I've done all sorts of work with various materials and resins, just never composites. I suspect paying a professional for repair may cost more than...
kendokelso
-
5 Years Ago
Well, there must be a reason why the repair is expensive. I would bet on too much expertise necessary to properly execute it, or expensive materials (less likely).
Buchado
-
5 Years Ago
As lester has said repairing wheels in any way needs a high temp resin, as the friction area is always susceptible to delamination. Just applying a resin wont fix this problem it needs the carbon...
scottracing
-
5 Years Ago
Is braking temp the main issue? Could I use them on a track bike or fixie after a poor to mediocre repair?
kendokelso
-
5 Years Ago
Yes if is mainly about the brake surface. It is actually a pretty stupid use case for composites with the bad heat transfer and the limited temperatures they can handle, directly in the most stressed...
SleepingAwake
-
5 Years Ago
Thanks, that's all really interesting info. Good point about stupid use case. I prefer an alloy braking surface anyway, more feel and more progressive, carbon tends to be a bit "grabby". Totally righ...
kendokelso
-
5 Years Ago
Post Reply
Like
6
Similar Topics
Post Quoted Reply
Reading This Topic
Login
Login
Remember Me
Reset Password
Resend Validation Email
Login
Facebook
Google
Explore
Messages
Mentions
Search