I spend maybe 10 hours designing and building a Heater Damper Door and Control. See the pictures for proof of how it works. It was 5 - 7 degees on the ground when I took off this morning. Warmer at altitude. About -3 C at altitude. I was dressed warm, but I had to turn the heat down - SERIOUSLY, it was getting very warm inside. The door effectively blocks off about 90 - 95% of the air flow thru the duct when fully closed. I offset the door slightly so it wants to open itself, not close itself. The detents in the choke cable barely hold it, but does. Works FANTASTIC ! Very happy with it. Takes some serious work to design/make the plate ( door ). I have many more pictures.
John Bender
John Bender
Last edited: