I am new to the composite repair process but have been playing around with different products and repairs.

My present situation is that I have been trying to repair a composite hockey stick that has broken in the shaft. I have tried a couple of techniques with both being unsuccessful. I have tried the repair from the inside using a carbon fiber sleeve and resin. It holds up but definetly not strong enough for a game of hockey and eventually breaks where the repair was done.

I have also tried on the outside, which lasted longer, but it eventually broke where the repair occurred. I believe I am either using the wrong type of sleeve or I a missing something in trying to do the repair.

If someone has some expertise or suggestions of what to use it would be greatly appreciated. I know it can be done.

Thanks for your help

Laroo

I've tried two type of repairs: The first repair is done by taking the shaft of the stick and cutting on each side of the damaged area so the stick will fit perfectly together when joined. The next step is to take a dremel tool and engrave 3-4 gouges into the inside of the shaft on each end where the break was. Take a foam piece and place in the bottom end of the stick just below the break, this will stop the epoxy resin from going all the way done the stick. Take a carbon sleeve and place into the end where the plug was placed. Join the stick together placing the other end of the shaft over the carbon sleeve. When joined the carbon sleeve should be about 4 inches long and centered  where the break occurred. Clamp together so it will not move. Take your two part expoxy resin, I use west system epoxy. Ratio mixed accordingly. When ready pour in the top of the stick and let it run down. If down correctly the repair should work accordingly and  the break or join is not very noticeable. The problem I think I am having is that I need something in the middle of the carbon fiber sleeve (not sure if a foam or other carbon fiber) so when every thing cures and hardens it is solid. Just so you know there is the companies that do this already SRS technology is one that you see videos.

The second repair is done on the outside: The area where the break occurred is sanded down approximately 3 inches above and below the break. Once sanded a carbon fiber sleeve is placed over and the epoxy resin applied. Once allowed to dry the area is sanded down to blend in with the stick and painted a similar color to the stick and should be ready to go.

I think the problem I am having is with the sleeve. I am not sure if I have the proper sleeve. I don't think mine is carbon fiber. Can you cut a carbon fiber sleeve with normal scissors. Should I be using a unidirectional as there will be some twisting and torsion on the stick when in use. In the internal application what do I need to put inside the sleeve to make it work.

If you look at the SRS technology video shaft replacement system, that is the same thing I am trying to accomplish.

Thanks for you help,

Laroo.

I've fixed a lot of my sticks using the technique srs uses. The first thing that I think you may be doing wrong is you're use just a sleeve on the inside. what you should do is actually bundle the carbon fiber then put it in the shaft, put shaft together, pour epoxy, and let it sit for the allotted 93 hours once done with all of that for extra comfort I have put a sleeve on the outside like you had done. But you need to bundle the carbon fiber not just stick a sleeve in there.  My sticks have never been stronger.