Brief Description: Install Cabin Heat Muff and Tubing
While I am waiting for parts for the Oil Cooler, I decided it was time to finish connecting the Scat Tubing for the cabin heat. I was looking at Carl Bell’s website and he put coarse steel wool inside the heat muff to provide more heating surface for the cabin-heat hot air intake. I have found if Carl does something, it’s always a good thing to do. He is a meticulous and excellent builder. So, I disassembled the outer clamps on the muff, slid it down the exhaust pipe to provide adequate clearance, and stuffed in four coarse steel wool pads I purchased from Home Depot (1st pic). Carl Bell seemed to think this will increase the heat in the cabin by as much as 1/3! That will be good, as I’m building this RV in Montana. Carl also placed a bead of high temperature RTV caulk over each of the scat tubes. Apparently, the metal clamp to hold the scat tube will eventually cut the outer threads of the scat tube. When that happens, the thread unravels and it releases the wire supports inside the tubing. RTV on the outside prevents the unraveling. The last two pictures show the installed Scat Tube connected end-to-end. I also installed a heat shield on the #3 exhaust pipe to protect the scat tube as it goes around the exhaust to the cabin-heat inlet.
