X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp112.sbc.mail.re2.yahoo.com ([68.142.229.93] verified) by logan.com (CommuniGate Pro SMTP 5.0.4) with SMTP id 880269 for flyrotary@lancaironline.net; Tue, 13 Dec 2005 09:58:00 -0500 Received-SPF: none receiver=logan.com; client-ip=68.142.229.93; envelope-from=downing.j@sbcglobal.net Received: (qmail 57924 invoked from network); 13 Dec 2005 14:54:16 -0000 Received: from unknown (HELO mom) (downing.j@sbcglobal.net@69.209.98.178 with login) by smtp112.sbc.mail.re2.yahoo.com with SMTP; 13 Dec 2005 14:54:15 -0000 Message-ID: <001901c5fff5$1e678ba0$4001a8c0@gateway.2wire.net> From: "John Downing" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: oil cooler opening Date: Tue, 13 Dec 2005 09:54:28 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0016_01C5FFCB.35252D40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0016_01C5FFCB.35252D40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ed; Thanks for the numbers. Last night I read the article in kit = planes, Oct 99, by Barnaby Wainfan on duct work and his article entitled = wind tunnel said that you need a duct behind the coolers to offset the = drag of the air in the cowling. Has anyone done any practical = applications on this (for Mazdas), or is the air from the coolant and = oil radiators just dumped into the cowling. My very limited = understanding of this, tells me that drag means more fuel needed. Any = and all comments welcome. JohnD From the farm ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Monday, December 12, 2005 9:20 PM Subject: [FlyRotary] Re: oil cooler opening John, The area of my oil cooler opening is 22-24 sq inches about 10" wide = and 2 1/2" high. I don't have the exact dimension handy, but its = opening is approx 3-4" back of the prop flange. So far its worked fine = for about 5 RVs that I am aware of using this approach. Ed ----- Original Message -----=20 From: John Downing=20 To: Rotary motors in aircraft=20 Sent: Monday, December 12, 2005 5:04 PM Subject: [FlyRotary] oil cooler opening Ed; What is the opening area and the distance behind the prop for = the oil cooler inlet. I'm wondering if the opening needs to be as near = the prop as the inlets for the radiators. Thanks in advance. JohnD = Had to cancel the insurance on the ole Colt today and put comp. on - = snowed in for the winter in northern Michigan. ------=_NextPart_000_0016_01C5FFCB.35252D40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ed;  Thanks for the numbers.  = Last night=20 I read the article in kit planes, Oct 99, by Barnaby Wainfan on duct = work and=20 his article entitled wind tunnel said that you need a duct behind the = coolers to=20 offset the drag of the air in the cowling.  Has anyone done any = practical=20 applications on this (for Mazdas), or is the air from the coolant and = oil=20 radiators just dumped into the cowling.  My very limited = understanding of=20 this, tells me that drag means more fuel needed.  Any and all = comments=20 welcome.  JohnD   From the farm
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Monday, December 12, 2005 = 9:20=20 PM
Subject: [FlyRotary] Re: oil = cooler=20 opening

John,
 
The area of my oil cooler opening is 22-24 sq = inches=20 about 10" wide and 2 1/2" high.  I don't have the exact dimension = handy,=20 but its opening is approx 3-4" back of the prop flange.  So far = its=20 worked fine for about 5 RVs that I am aware of using this=20 approach.
 
Ed
 
----- Original Message -----
From:=20 John=20 Downing
To: Rotary motors in = aircraft=20
Sent: Monday, December 12, = 2005 5:04=20 PM
Subject: [FlyRotary] oil = cooler=20 opening

Ed;  What is the opening area = and the=20 distance behind the prop for the oil cooler inlet.  I'm = wondering if=20 the opening needs to be as near the prop as the inlets for the=20 radiators.  Thanks in advance. =20 JohnD       Had to cancel the = insurance on the=20 ole Colt today and put comp. on - snowed in for the winter in = northern=20 Michigan.
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