rv9aviator
Well Known Member
I have a Vetterman crossover exhaust with mufflers on my RV-9A and because the mufflers are much closer to the cowl than just the pipes I was getting heat damage to the lower cowl after only 2 hours of flight. This is how I fixed the problem. This would be something to do before you ever fly as it will most likely become necessary. I only have one heat muff installed so the side without the heat muff puts off much more heat. Here are pictures of the mufflers with and without the heat muffs.
I have to give Dan Horton all the credit for the materials and how I did this. You take some 1/16 thick fiberfrax from ACS and cut a piece big enough to cover the effected area and then cut a piece of the self adhesive aluminum sheet from VANS 2 inches larger each side around the piece of fiberfrax.
Continued!
I have to give Dan Horton all the credit for the materials and how I did this. You take some 1/16 thick fiberfrax from ACS and cut a piece big enough to cover the effected area and then cut a piece of the self adhesive aluminum sheet from VANS 2 inches larger each side around the piece of fiberfrax.
Continued!
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