 You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
Changing the cassette on my brand new disk wheel today and managed to nick the chain whip on the carbon skin. It a just a nick that had delaminated a few shards of carbon, not structural (confirmed by the manufacturer) but could do with a bit of glue to tidy it up. Would normal super glue do, or Do I need some special epoxy? I don't need to do a carbon repair as such, the damage is really minor, and totally superficial. Its glue, or a tiny bit of electrical tape which would probably work as well.
Just epoxy. If you can get the proper old fashioned stuff (24 hour) it sets much better/harder. I always do bars etc. after cutting, just a wipe round after with a gloved finger.
What exactly do you mean, delamination of carbon fibre tends to be non-repairable as it's a failure mode of composites, do you mean you've just scratched the surface (lacquer coating), the epoxy resin or you've actually damaged the carbon fibres?
Its a parcours disk wheel (the type on a tt bike) and the damage is not structural according to parcours. Pic here..
Epoxy resin.
Laminating epoxy would be best, e.g. from easy composites.
Araldite would probably be ok.
I'd be inclined to apply it, use a hairdryer to make it flow into the gaps. Then after it is set sand flat and paint.
A friend of mine had a disc wheel and the main disc started to break away from the rim. He consulted a carbon repair expert who recommended thorough cleaning of the surfaces (IPA from memory) and then epoxy and clamping until cured.
Most of what is above.
wipe clean with water or better IPA.
Not sure what epoxy would work best but a low viscosity slow cure system would allow better wetting and flow out. This will bond the lose fragment better and fill any voids giving a flush finish. You might still have a need to sand carefully.
I'd look for an epoxy repair product rather than a generic adhesive. The araldite glue tend to yellow quite badly over time. I guess other adhesives will as well as they are not formulated for uv stability.
Ive actually just spotted a far bigger issue with it, unrelated to my hamfistedness. There appears to be a bulge in the carbon skin which you can see in this pic. It's made to look far worse by the light in the pic but it's definitely noticable if you look closely
https://postimg.cc/sM8ZQ6W7/e137b147
https://postimg.cc/5HBN4nSx/44c37543
That looks like a manufacturing defect right? Wheel is perfectly true so hasn't warped. It a only done 5 miles, been locked away in a wheel bag in a cupboard pretty much since nov.
See above your image where it says 'Share', tap that, copy 'Direct link'.2nd box down, paste into your forum text and magic things happen..
