Return-Path: Sender: (Marvin Kaye) To: lml Date: Sat, 04 Jan 2003 18:39:59 -0500 Message-ID: X-Original-Return-Path: Received: from [64.4.8.198] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.0.3) with ESMTP id 1944988 for lml@lancaironline.net; Sat, 04 Jan 2003 09:28:20 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Sat, 4 Jan 2003 06:28:20 -0800 X-Originating-IP: [67.1.56.171] From: "Gary Edwards" X-Original-To: "LML" Subject: Oil Cooling X-Original-Date: Sat, 4 Jan 2003 06:27:57 -0800 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004B_01C2B3BA.6C1FAF60" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: MSN Mail 8.00.0022.3100 X-MimeOLE: Produced By Microsoft MimeOLE V8.00.0022.3100 X-Original-Message-ID: X-OriginalArrivalTime: 04 Jan 2003 14:28:20.0114 (UTC) FILETIME=[877EFF20:01C2B3FD] This is a multi-part message in MIME format. ------=_NextPart_000_004B_01C2B3BA.6C1FAF60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I concur with Bob. My oil temperature is on the low side in all but the = hottest 3 months of the year. It runs about 180 to 200 degrees most of = the time. In the summer months it runs about 200. Extended climbs = don't seem to raise it much. The oil cooling system includes two, 5 inch round oil coolers, one on = each side, mounted on the engine mount, each with its own Naca duct = inlet. The Naca ducts are a little larger than the cabin inlet ducts = and have 2 inch scat tubing 6 inches long on the inlet side, and 4 inch = scat tubing on the outlet side. The outlet tubes terminate near the = rear lower cowl outlet area. The size of the Naca inlet ducts (inlet = area) was determined by the area of the 2 inch scat tubing. A few weeks ago, I blocked off one (left side) oil cooler inlet. In = climb and in flight, the oil temperature wasn't any different. Still = low. I plan to block the right side oil cooler inlet on my next flight = to compare temperatures. Pictures of the oil coolers and inlets are at: = http://groups.msn.com/LancairN21SNAirplane Gary Edwards N21SN ------=_NextPart_000_004B_01C2B3BA.6C1FAF60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I concur with Bob. My oil temperature is on the low = side in all=20 but the hottest 3 months of the year. It runs about 180 to 200 = degrees=20 most of the time. In the summer months it runs about 200. = Extended=20 climbs don't seem to raise it much.

The oil cooling system includes two, 5 inch round oil coolers, = one on=20 each side, mounted on the engine mount, each with its own Naca duct = inlet. =20 The Naca ducts are a little larger than the cabin inlet ducts and = have 2=20 inch scat tubing 6 inches long on the inlet side, and 4 inch scat tubing = on the=20 outlet side. The outlet tubes terminate near the rear lower cowl = outlet=20 area. The size of the Naca inlet ducts (inlet area) was determined = by the=20 area of the 2 inch scat tubing.

A few weeks ago, I blocked off one (left side) oil cooler = inlet. In=20 climb and in flight, the oil temperature wasn't any = different. Still=20 low. I plan to block the right side oil cooler = inlet on my=20 next flight to compare temperatures.

Pictures of the oil coolers and inlets are at: http://groups.msn.com= /LancairN21SNAirplane

Gary Edwards

N21SN

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