X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp110.sbc.mail.re2.yahoo.com ([68.142.229.95] verified) by logan.com (CommuniGate Pro SMTP 5.0.7) with SMTP id 960546 for flyrotary@lancaironline.net; Mon, 30 Jan 2006 09:22:00 -0500 Received-SPF: none receiver=logan.com; client-ip=68.142.229.95; envelope-from=downing.j@sbcglobal.net Received: (qmail 68277 invoked from network); 30 Jan 2006 14:21:14 -0000 Received: from unknown (HELO mom) (downing.j@sbcglobal.net@69.209.98.178 with login) by smtp110.sbc.mail.re2.yahoo.com with SMTP; 30 Jan 2006 14:21:14 -0000 Message-ID: <002701c625a8$900de140$4001a8c0@gateway.2wire.net> From: "John Downing" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Cooling air inlets Date: Mon, 30 Jan 2006 09:22:12 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0024_01C6257E.A6C9FC40" 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_0024_01C6257E.A6C9FC40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bob; The 40 sq. will not cool the engine. Ed and others are using a 2 = 1/2 inch x 10 inch hole under the spinner for the oil cooler, as more = than half of the engine cooling is through oil, as I understand it. I'm = working on the oil cooler opening as well as the round holes to cool the = coolant. My exit is currently 61.8 sq. inches, so it appears that I = need to add some type of cowl flaps to exit more air. JohnD from = the farm ----- Original Message -----=20 From: BMears9413@aol.com=20 To: Rotary motors in aircraft=20 Sent: Sunday, January 29, 2006 9:19 PM Subject: [FlyRotary] Re: Cooling air inlets That's good to know that you think around 40 square inches of air = inlet will cool your motor. I'm planning to run an underbelly air scoop = to the radiator that will have 51 sq. in. inlet. I had no idea if that = would be enough. but from what you guys are saying, in should be = sufficient for my 20B. Bob Mears ------=_NextPart_000_0024_01C6257E.A6C9FC40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bob;  The 40 sq. will not cool the engine.  Ed and others = are=20 using a 2 1/2 inch x 10 inch hole under the spinner for the oil cooler, = as more=20 than half of the engine cooling is through oil, as I understand = it.  I'm=20 working on the oil cooler opening as well as the round holes to cool the = coolant.  My exit is currently 61.8 sq. inches, so it appears that = I need=20 to add some type of cowl flaps to exit more air. =20 JohnD     from the farm
----- Original Message -----
From:=20 BMears9413@aol.com
Sent: Sunday, January 29, 2006 = 9:19=20 PM
Subject: [FlyRotary] Re: = Cooling air=20 inlets

That's good to know that you think around 40 square inches of air = inlet=20 will cool your motor. I'm planning to run an underbelly air scoop to = the=20 radiator that will have 51 sq. in. inlet. I had no idea if that would = be=20 enough. but from what you guys are saying, in should be sufficient for = my=20 20B.
 
Bob Mears
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