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Greg, did this exhaust guy elaborate on why it might not be a
good idea?
Why can’t we move the heat muff further from engine to where
temps are similar to Lycoming – use flex-stainless tubing for ducting?
Jeff
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Greg Ward
Sent: Wednesday, December 16, 2009 1:32 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Cabin Heat (Was Oil Cooler)
We've
been looking at the same things with our install. We talked to our
exhaust guy, and he feels that with the exhaust temps that these rotaries have,
that it might not be a good idea, (the muff). Next step was hot water,
plumbing, and a heater core inside some where, which was sort of a negative
idea. We kept all of our cooling lines exterior, so that a coolant leak
wouldn't happen inside at about 10K feet, and 200+ knots, not a good scenario.
J.C. Whitney has a small electric heater that has some possibilities, so we are
looking into that and some other ideas.
Lancair
20B N178RG in Progress
-----
Original Message -----
Sent: Tuesday, December
15, 2009 1:41 PM
Subject: [FlyRotary] Cabin
Heat (Was Oil Cooler)
I'm considering going to a heat muff since there
is sooooooo much exhaust heat that's just going to waste. I was going to
incorporate it into the heat shield of my newest muffler design. Of
course, I'll need to add a CO detector in the cabin for safety.
On Tue, Dec 15, 2009 at 3:24 PM, Jeff Whaley <jwhaley@datacast.com> wrote:
Well with 3 coolers already, I didn’t
want to add a heater core and all the plumbing – I may move my scavenge point
from oil cooler to water radiator as it is below the engine (uphill for warm
air) and closer to the firewall (fewer corners to turn). I picked the oil
cooler because at the time my oil temp was higher than water temp – now it’s
the other way around … also the outlet of oil cooler as installed is less
likely to get contaminated with exhaust fumes.
Jeff
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