Talk Composites - The Forum for Advanced Composites

Bicycle Chainstay repair

http://www.talkcomposites.com/Topic12900.aspx

By flint - 9/17/2014 9:33:49 PM

Hi all

attempting to repair my carbon bike frames chainstay (non-drive side). So far I have followed crack down through the chainstay and removed all delaminated carbon. There is now a nice 1" hole but the rest of carbon is solid. I have tried to cut in on either side of the hole using a fine rasp, so have a decent chamfer about 1 1/2" either side of the hole.

My plan was to just use multiple layers of Carbon Fibre 2/2 Twill 3k 195g, but having read a little more, I'm concerned this might not be enough to affect a decent repair, would I need to use some sort of UD fiber first?

Any advice gladly taken

Rod
By Warren (Staff) - 2/23/2015 12:54:50 PM

Pretty much a standard repair as per the video.  Make sure all loose material has been removed and the area has a good key.  The square section can make things a little bit more awkward but should still be achievable.

Remember you may not be able to see all the damage or know exactly how deep the damage goes so be sure to add enough reinforcement to strengthen it sufficiently depending on wall thickness of tube etc.