Greasykdstf
Member
RV9 O-320 848 SMOH
Last year I installed a Vans Heat Muff on the left side exhaust. I didn't build this aircraft, and in it's previous life it was a warm weather aircraft that never flew in the winter. After one year, this heat muff does not throw out a lot of heat. I noticed that Spruce has a muff with a restrictor in the muff exhaust for about $200.00 I can't decide if I should do that or simply add stainless steel scrubby pads from Wal-Mart to increase surface area, and more importantly reduce flow(about $2.62. The intake on the muff comes from the passenger side baffling and has a sizeable diameter, at least 1 1/2", but I believe I used 2" scat tubing when I plumbed it so it may be larger. The scrubbies may help, and I am wondering if someone else has used these and the result of same. See photo. Thanks Joe
Last year I installed a Vans Heat Muff on the left side exhaust. I didn't build this aircraft, and in it's previous life it was a warm weather aircraft that never flew in the winter. After one year, this heat muff does not throw out a lot of heat. I noticed that Spruce has a muff with a restrictor in the muff exhaust for about $200.00 I can't decide if I should do that or simply add stainless steel scrubby pads from Wal-Mart to increase surface area, and more importantly reduce flow(about $2.62. The intake on the muff comes from the passenger side baffling and has a sizeable diameter, at least 1 1/2", but I believe I used 2" scat tubing when I plumbed it so it may be larger. The scrubbies may help, and I am wondering if someone else has used these and the result of same. See photo. Thanks Joe