X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao101.cox.net ([68.230.241.45] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 4027752 for flyrotary@lancaironline.net; Fri, 18 Dec 2009 11:40:20 -0500 Received-SPF: none receiver=logan.com; client-ip=68.230.241.45; envelope-from=alventures@cox.net Received: from fed1rmimpo03.cox.net ([70.169.32.75]) by fed1rmmtao101.cox.net (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20091218163944.UYXZ4995.fed1rmmtao101.cox.net@fed1rmimpo03.cox.net> for ; Fri, 18 Dec 2009 11:39:44 -0500 Received: from BigAl ([72.192.128.205]) by fed1rmimpo03.cox.net with bizsmtp id Jgfj1d0094S1t5C04gfj61; Fri, 18 Dec 2009 11:39:43 -0500 X-VR-Score: 0.00 X-Authority-Analysis: v=1.1 cv=hxRkenI+XOLoHPjz51PhBd6+pm8nOe1puOOeXS7yE/Y= c=1 sm=1 a=3y8vsL2qxYMA:10 a=Vegc0WxVmH5BHtpNDyThtA==:17 a=Ia-xEzejAAAA:8 a=suVN3F_-Uyufsyn4HwwA:9 a=5rL3K4fx8lOZFBDUpLbsL_Q_3-wA:4 a=EzXvWhQp4_cA:10 a=wPygDP4qt3G0quHz:21 a=SGta_nGtq0x9r48s:21 a=Y2VNeNrzAAAA:8 a=yMhMjlubAAAA:8 a=TW66zc2HAAAA:8 a=SSmOFEACAAAA:8 a=HQ31llbKAAAA:8 a=dNwVEYDPWi2KLxmh1FYA:9 a=_GEx9ZrPz4LshbGKmIQA:7 a=2uFKPLnG8JWE-fSUud2DNT_xZc8A:4 a=Vegc0WxVmH5BHtpNDyThtA==:117 X-CM-Score: 0.00 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Radiator/Oil Cooler Combo Date: Fri, 18 Dec 2009 08:40:13 -0800 Message-ID: <6784AB7D789F40BEBBD12E035A0DC0FA@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0012_01CA7FBD.B7828050" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6856 thread-index: Acp/+7Cbq3LtVFj+QYm6KCCPzRR87wAA7hwg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0012_01CA7FBD.B7828050 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Thomas; =20 The oil cooler for filter mount units are hard to come by; I think the = last one I found was used on a VW years ago. But in any case they are not = very interesting for us unless you're just trying to add maybe 10-15% to your cooling capacity. =20 I don't know what's available in oil coolers in radiators, but for the rotary we'd ideally like to keep the oil temp a bit lower, like maybe 160-175F - helps keep the rotor face temp down a bit. =20 Happy Holidays, =20 Al G =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Mann Sent: Friday, December 18, 2009 8:03 AM To: Rotary motors in aircraft Subject: [FlyRotary] Radiator/Oil Cooler Combo=20 =20 I was watching a video that was created by Tim England regarding his 4.3 = V6 install in a velocity. =20 In his install he was running some sort of oil cooler that was a = combination oil filter mount with a heat exchanger working off of the coolant from = the radiator (or something to that effect.) His argument for this approach centered around his belief that under extremely cold temps at altitude, = an oil cooler that is inside the radiator may make the oil too cold to run = at peak efficiency. i.e. keeping the oil at around 195F was a better option under all temperature conditions. =20 So now I have these questions: =20 Does this philosophy translate to Rotary powered aircraft? Is the oil cooler/radiator a good solution?=20 If it is, do I need to use a different inch^3 figure per HP to derive = the correct radiator size? If the 195F oil solution seems viable, does anyone know of an oil filter mount that includes a heat exchanger? =20 T Mann ------=_NextPart_000_0012_01CA7FBD.B7828050 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Thomas;

The oil cooler for filter mount = units are hard to come by; I think the last one I found was used on a VW years = ago. But in any case they are not very interesting for us unless you’re = just trying to add maybe 10-15% to your cooling capacity.

I don’t know what’s available in oil coolers in radiators, but for the rotary we’d = ideally like to keep the oil temp a bit lower, like maybe 160-175F – helps keep = the rotor face temp down a bit.

Happy Holidays,

Al G

-----Original = Message-----
From: Rotary motors in = aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Mann
Sent: Friday, December = 18, 2009 8:03 AM
To: Rotary motors in = aircraft
Subject: [FlyRotary] = Radiator/Oil Cooler Combo

I was watching a video that was created by Tim England regarding his 4.3 = V6 install in a velocity.

In his install he was running some sort of oil cooler that was a = combination oil filter mount with a heat exchanger working off of the coolant from the = radiator (or something to that effect.) His argument for this approach centered = around his belief that under extremely cold temps at altitude, an oil cooler = that is inside the radiator may make the oil too cold to run at peak efficiency. = i.e. keeping the oil at around 195F was a better option under all temperature conditions.

So now I have these questions:

Does this philosophy translate to Rotary powered aircraft?

Is the oil cooler/radiator a good solution?

If it is, do I need to use a different inch^3 figure per HP to derive the = correct radiator size?

If the 195F oil solution seems viable, does anyone know of an oil filter = mount that includes a heat exchanger?

T Mann

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