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Wendell Voto wrote:
----- Subject: [FlyRotary] Re: heater
Ernest.
My oil temp generally runs 10C degrees cooler than the coolant temperature.
This is actually very desirable as the oil red line is 210F while the coolant can go much higher.
Also it will take longer for the oil to heat up than the coolant as it's thermostat is activated at 140F degrees allowing flow through the cooler, while the coolant thermostat is usually at 180F, if you have one installed.
Having said all that, I am currently using my oil cooler exhaust air for cabin heat just because it was easier to do, since the oil cooler is mounted to the firewall and has its own fresh air inlet and outlets.
Jim
Ernest Christley <echristley@nc.rr.com> wrote:
snip
I'm using oil for cabin heating. It's hotter.
-- ,|"|"|, Ernest Christley |
Concerning cabin heaters, I had been planning on following John Slade with the heater A/C combo until a conversation with a fellow Cozy builder and he claimed that running the hot water lines inside (as would need to be done on a Cozy) leads to a possible failure mode that could cook the pilot and / or passengers. Said hot water from engine escaping into cabin usually causes steam which somehow is hotter that the water or is more likely to spray all over the place and cause great pain to the occupants. Claimed this is what caused one of the air racers to crash recently. Should I change to oil for the heat ? If so, what exchanger will handle the oil pressure and spikes of the rotary? All comments (sensible) welcome. Wendell
Steamed pilot? Hmm? I don't know about that. This is the way every car I know of heats the cabin. Haven't heard of any cooked drivers or passengers. Did have a heater core crack in my Dodge truck, though. The stench of antifreeze is what finally drove me to tear the dash completely apart to replace it, not the heat. The worst case is that the cabin may get extremely humid. My advice would be to place the core so that it is accessible for replacement, and ignore the wild hysteria. If you're still worried about that failure mode, put a valve on the hot side as the line comes into the cabin.
--
This is by far the hardest lesson about freedom. It goes against
instinct, and morality, to just sit back and watch people make
mistakes. We want to help them, which means control them and their
decisions, but in doing so we actually hurt them (and ourselves)."
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