TTaylor Posted December 21, 2013 Report Posted December 21, 2013 I have found (or should I say my wife) that the rear seats in the 20F can be cold this time of year at 11,500 feet. My son and I usually fly in the front seats and my wife in the back. With full heat on the front seats are too hot, but the back are still cool to cold. I made a slim box of cardboard yesterday and ran it from the heater outlet in the center to behind the front seats and that helped. Was wondering if there are good solutions for better cabin heat distribution. Also, do the rear cabin vent pull in cold air in flight? I don't know if these can be covered to keep the rear compartment warmer. Side note, did get to see 205 knot ground speed yesterday over the top of the Sierra's.
Marauder Posted December 21, 2013 Report Posted December 21, 2013 Since we both own 1975 models, one thing you may want to look at is the condition of the tubing in the heat system. Especially the stuff underneath the panel. I also make sure that the center duct underneath the throttle quadrant is open fully and pointed towards the rear.
DrBill Posted December 21, 2013 Report Posted December 21, 2013 Plenty of port wine for the rear pass. 1
Bob_Belville Posted December 21, 2013 Report Posted December 21, 2013 Not sure about the F vs. the E. My E has 1" duct to the back seat. It runs behind the interior side panels from the split above the rudder pedals on both sides. Closing the shutters to the front seats should increase the flow to the rear. Be sure all that plumbing is in order.
N601RX Posted December 21, 2013 Report Posted December 21, 2013 You may want to check for drafts. There is a 2" crack behind the side panels where the floor joins the sides. Mooney originally sealed this with tape. My tape had long since turned loose. It's a aluminum tape with fiber reinforcement. There is also a lot of small cracks along the sides of the rear seats. These can be filled with 3m caulk strip. Stopping all the leaks made a big difference. There is also a vent at the rear of each seat that can be blocked off during the winter.
Bob_Belville Posted December 22, 2013 Report Posted December 22, 2013 I think those "vents" are for outgoing air and probably should stay open. I stand to be corrected....
Bob - S50 Posted December 22, 2013 Report Posted December 22, 2013 How about a small 12v electric fan plugged into the lighter adapter and placed at floor level to blow air toward the back?
larryb Posted December 22, 2013 Report Posted December 22, 2013 Side note, did get to see 205 knot ground speed yesterday over the top of the Sierra's. You must have been going south. I had a 41kt headwind going north to Truckee today. Sent from my iPad using Tapatalk
TTaylor Posted December 22, 2013 Author Report Posted December 22, 2013 Thanks all. Chris the air is flowing well out of the vent in the center of the console. I am considering a short section of SCAT tubing I can Velcro in place in the cold months. I need to ride in the back seats to be able to feel for leaks and make sure everything is sealed well. I had planned to replace the door seal at annual when I get back from this trip. I will have to look at the vents near the rear seats to see if they cause drafts and maybe design a cover that can be put on and off in flight if they let too much cold in. Sent from my Nexus 7 using Tapatalk
TTaylor Posted December 22, 2013 Author Report Posted December 22, 2013 Larry, yes I was turning south from crossing as South Lake Tahoe at 13,500. Computer was giving me an ete of 19 minutes into Oakdale (O27) 80 miles away. Wish I could get a tailwind like that for a long leg on a flight.
N601RX Posted December 22, 2013 Report Posted December 22, 2013 I think those "vents" are for outgoing air and probably should stay open. I stand to be corrected.... That's probably correct. If all the outlets are blocked, you not going to get much warm air from the vents. What goes in must go out. Check the seams along the floor I mentioned earlier. I think I have saw a old service instruction about resealing around the rear seat.
carusoam Posted December 23, 2013 Report Posted December 23, 2013 Consider. changing all scat tubing. The old stuff collapses... Change out the door seal. Old ones leak... Check how well the ceiling vents close off flow... Fly at lower than 10k'. The N/A engine can't produce enough heat at high alts. Then, large blanket over everyone in the back... This was the experience of my M20C. Everything leaked when I got it... Best regards, -a-
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