Hello all. I am in the process of modifying my sport bike to put a muffler in the tail with the tips coming out of the back. I have made some small fiberglass parts before so I am not totally new. I am curious what type of resin I should use and how I would go about post curing it. I have a small electric oven that I use for powdercoating. The muffler would have to withstand about 300 degrees. Thank you in advance.
http://www.freemansupply.com/RenInfusion8615Epo.htm
RenInfusion 8615 with work.
BMIs and Cynate esters might work as well. All will need a heat cure at around 350f.
There are many high temp grade epoxies out there. Freeman Supply might be able to pinpoint a good one for ya. Check out the Composites World Sourcebook for more epoxy manufacturers.
Good luck! Got a guy here that is working on filament winding his own system! Have you actually measured the various points for max temp? We were wondering what the muffler skin sees.
On my 650cc motorcycle which currently has an aftermarket carbon fiber muffler the exterior sees about 300 degrees. I will have a perforated stainless steel pipe running through the middle which will be wrapped in fiberglass muffler packing so I don’t expect the exterior to get much hotter than that. How do I go about heat curing the parts? Turn the oven to 350 and let it sit for a few hours after it is out of the mold?
[QUOTE=MikeGyve;20493] How do I go about heat curing the parts? QUOTE]
Fix it on, fire her up and rip up the strip. 
(Sorry!)
well, I would think you are infusing, wet laying up, or filament winding right? The first 2 would require a vac. bag and a mold. So after bagging it, you throw all that in the oven, and cook per instructions. (normally 30-60min ramp. 60-120min soak, and then 30-60min cooldown) THEN unbag the part from the mold. Now, there might…MIIIIGHT be a room temp cure resin, that can freestand post-cure at a oven temp, that can see 300f service temps. But I don’t know of any.
Of course, if you are really crazy, you can find some PEEK, or PEI film, wrap alternating layers of that and carbon, vac bag (or shrinktape) and cook. But you will need an oven that goes up to 720f.
Obviously, you need a mold, and bagging materials that can go upto 400f (i think that is the normal mid-range temp for bagging stuff)