Kaldragon
Member
So after being unhappy with the amount of heat I was getting out of my cabin heater last winter I removed the original air distribution...well, whatever the builder/one of the last owners was trying to so. I strapped a scat tube onto the outlet and routed it straight at my rudder pedals. This helped a LOT, but I noticed something strange...
I get next to no flow at all when the cabin heat is pulled to full, but dramatically more (probably 4x the flow or so) at partial settings, probably maxing out at about half the full heat.
Anyone else have this issue? To me this makes me think that for some reason, even with a dedicated baffling inlet scat tubed to the heat muff that the cooling air below/aft of the baffling is somehow higher pressure than what's on top of the cylinders. I've been delaying simply taking off the scat tube from the heater to the firewall penetration to see if I get better airflow, but now that the aircraft is down for maintenance it has me wondering if I'd get better heat that way...
I get next to no flow at all when the cabin heat is pulled to full, but dramatically more (probably 4x the flow or so) at partial settings, probably maxing out at about half the full heat.
Anyone else have this issue? To me this makes me think that for some reason, even with a dedicated baffling inlet scat tubed to the heat muff that the cooling air below/aft of the baffling is somehow higher pressure than what's on top of the cylinders. I've been delaying simply taking off the scat tube from the heater to the firewall penetration to see if I get better airflow, but now that the aircraft is down for maintenance it has me wondering if I'd get better heat that way...