It is not a full tube, it is half tube (180degrees, not 360).
This winter I chopped my CF Akras down 3in & redid the packing.
I wrapped some CF “fabric” around the baffle then some Alum tape to hold that in place “& make louder” then the V&H packing.
The CF fabric is different - it looks like just black cloth but should make it cooler ?
odd? Looks like black cotton cloth! What did it seem like when you saw it first hand? I can say that if it was a tight weave anything, it will allow less exhaust to go through the baffle,. making it loud, and cool…
I have some carbon fiber cloth that is tightly woven fine plain weave. This Vance and Hynes kit is probably similar c/f.
$150 is a kinda steep price for that dual kit.
Here are a couple of pictures of the final actual product.
Good job! Look perfect.
I had actually bought my fabric from McMaster Carr awhile back.
It said carbon fiber but when I got it I was disappointed because it just looked like regular black cloth.
Didnt have a use for it until I saw that kit & did my pipes.
http://www.mcmaster.com/#carbon-fiber-fabric/=prilw
Material is at least 50% polyacrylonitrile. Color is black.
Sheeting resists flames and molten metal splash, making it ideal for protective clothing. Max. temp. is 800° F and can provide a protective barrier for as long as 2 minutes in temperatures up to 2600° F. Strips are good for high-temperature seals and heat insulation. Max. temp. is 700° F when oxygen is present and 5000° F when oxygen is not present.
…for layup, is remarkable. Really good job especially the varnish.
This is my heatshield fitted to a kitcar. What do you guys think? 
Model jet guys use some kind of ceramic coating in a spray can for their little turbine exaust tubes, cant remember a brand though, I do remember it works up to @ 600 deg.f
I thought I would post up my latest experience with exhaust heat shields.
An made a pair of side exhaust guard shields for a Harley Davidson V-Rod last year. I made them out of some Saertex multiaxial c/f and one layer of cosmetic twill on top surface. The resin was ISO polyester resin catylized 3%.
The guards did not hold up at all so close to the exhaust pipes. The customer didn’t say exactly what failure occured but that they did not hold up to the heat.
I was also reading in the FiberglassSite cd-rom manual that there is a chemical addative that can make resin fire retardant. I’ll try to find the name of the chemical and a MSDS on it so if you want to make your polyester or vinylester resin fire proof. I’m not sure wether or not the chemical would be compatible with all epoxy types. Still the chemical would not make the resin stable with uses close to exhaust pipes.
what temperature is vinylester resin stable up to?
Polyester resin shouldn’t have een been considered for an exhaust shield without insulation!
A good epoxy will work. Fire retardant doesn’t matter if it never catches fire in the first place. And these are exterior use anyways.
Usually the vinylester resin are 2 types one of 120 Celsium and second with 230 Celsium. Before 2 years I make one tube like that 360 degrees and I put in oven of 200 celsium. The results was unbelievable, it was like stainless steel part.:eek: