X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from EXHUB003-4.exch003intermedia.net ([207.5.74.111] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTPS id 4025525 for flyrotary@lancaironline.net; Thu, 17 Dec 2009 08:04:37 -0500 Received-SPF: none receiver=logan.com; client-ip=207.5.74.111; envelope-from=jwhaley@datacast.com Received: from EXVMBX003-5.exch003intermedia.net ([207.5.74.45]) by EXHUB003-4.exch003intermedia.net ([207.5.74.111]) with mapi; Thu, 17 Dec 2009 05:04:03 -0800 From: Jeff Whaley To: Rotary motors in aircraft Date: Thu, 17 Dec 2009 05:05:11 -0800 Subject: RE: [FlyRotary] Re: Cabin Heat (Was Oil Cooler) Thread-Topic: [FlyRotary] Re: Cabin Heat (Was Oil Cooler) Thread-Index: Acp+fYZ5gFwYtFuXRpqwKbrDNUUEKAAm2MpQ Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_C03ABB0A7362B84BB53D544B3C305E0E0153A4AC4E17EXVMBX0035e_" MIME-Version: 1.0 --_000_C03ABB0A7362B84BB53D544B3C305E0E0153A4AC4E17EXVMBX0035e_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable 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 simi= lar to Lycoming - use flex-stainless tubing for ducting? Jeff From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Greg Ward Sent: Wednesday, December 16, 2009 1:32 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Cabin Heat (Was Oil Cooler) Hey Mark; We've been looking at the same things with our install. We talked to our e= xhaust guy, and he feels that with the exhaust temps that these rotaries ha= ve, 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 negativ= e 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 scenar= io. J.C. Whitney has a small electric heater that has some possibilities, = so we are looking into that and some other ideas. Greg Ward Lancair 20B N178RG in Progress ----- Original Message ----- From: Mark Steitle To: Rotary motors in aircraft Sent: Tuesday, December 15, 2009 1:41 PM Subject: [FlyRotary] Cabin Heat (Was Oil Cooler) Jeff, I'm considering going to a heat muff since there is sooooooo much exhaust h= eat that's just going to waste. I was going to incorporate it into the hea= t shield of my newest muffler design. Of course, I'll need to add a CO det= ector in the cabin for safety. Mark On Tue, Dec 15, 2009 at 3:24 PM, Jeff Whaley > 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 t= he outlet of oil cooler as installed is less likely to get contaminated wit= h exhaust fumes. Jeff --_000_C03ABB0A7362B84BB53D544B3C305E0E0153A4AC4E17EXVMBX0035e_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

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)

 

H= ey Mark;

W= e'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 h= ave, 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 le= ak wouldn't happen inside at about 10K feet, and 200+ knots, not a good scenar= io.  J.C. Whitney has a small electric heater that has some possibilities, so we= are looking into that and some other ideas.

G= reg Ward

L= ancair 20B N178RG in Progress

----- Original Message -----

From: Mark Steitle

Sent: Tuesday, Decem= ber 15, 2009 1:41 PM

Subject: [FlyRotary] Ca= bin Heat (Was Oil Cooler)

 

Jeff,

I'm considering going to a heat muff since t= here 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.<= /p>

 

Mark

On Tue, Dec 15, 2009 at 3:24 PM, Jeff Whaley <jwhaley@datacast.com> wrote:

Well with 3 coolers already, I did= n’t want to add a heater core and all the plumbing – I may move my scaven= ge point from oil cooler to water radiator as it is below the engine (uphill for war= m 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 – n= ow 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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