Return-Path: Sender: (Marvin Kaye) To: lml Date: Thu, 02 Jan 2003 18:55:13 -0500 Message-ID: X-Original-Return-Path: Received: from tomts23-srv.bellnexxia.net ([209.226.175.185] verified) by logan.com (CommuniGate Pro SMTP 4.0.3) with ESMTP id 1943236 for marv@lancair.net; Wed, 01 Jan 2003 16:01:17 -0500 Received: from a ([67.69.53.37]) by tomts23-srv.bellnexxia.net (InterMail vM.5.01.04.19 201-253-122-122-119-20020516) with SMTP id <20030101210115.SSVC19158.tomts23-srv.bellnexxia.net@a> for ; Wed, 1 Jan 2003 16:01:15 -0500 X-Original-Message-ID: <001601c2b1d9$d7aaa6a0$25354543@a> From: "Ian B. Crowe" X-Original-To: "Marv Kaye" Subject: Oil cooling X-Original-Date: Wed, 1 Jan 2003 16:07:49 -0500 Organization: Corvi Trade Consultants Inc MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0013_01C2B1AF.EE80B240" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_0013_01C2B1AF.EE80B240 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I am having problems getting my oil temperatures below 200 degrees with = outside temperatures at or around the 32degree level. Most of the time = I am running at 220 to 230 degrees. I have a NACA duct on the right hand side of the cowl four inches below = the split line and approximately 2/3rds of the the way back from the = front of the cowl. This duct connects with a 3inch diameter SCAT hose. = This hose leads back from the duct and goes through a long radius = 90degree bend and enters the cooler plenum chamber from the top. The = cooler is mounted on the right hand side of the fire wall and the air = flow is down through the cooler. The air then exits from the cooler into = the lower portion of the cowling and out to the exterior of the plane. = There is no duct or hose on the discharge side. The cooler is a 9 row = unit. The NACA duct is one I bought from Butler and is normally used on race = cars. Is there an optimum length for the opening on the cowl side to = ensure the air flow enters the duct in sufficient quantity? Looking at the cowling from the front of the plane the opening is = invisible as the cowling which is non standard is slightly wider at the = front than the firewall so it is a slow taper to the firewall. There = may be a dead spot there. I did put a deflector on the lip of the duct, would this help to get air = into the duct and would bending it further out into the slip stream = improve the air flow? I intend to verify the accuracy of the gauge in boiling water.=20 Does anyone have any good ideas? Happy New Year to all Ian Crowe. ------=_NextPart_000_0013_01C2B1AF.EE80B240 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable

I am having problems getting my oil temperatures = below 200=20 degrees with outside temperatures at or around the 32degree level. = Most of=20 the time I am running at 220 to 230 degrees.

I have a NACA duct on the right hand side of = the cowl=20 four inches below the split line and approximately 2/3rds of the the way = back=20 from the front of the cowl. This duct connects with a 3inch = diameter SCAT=20 hose. This hose leads back from the duct and goes through a long = radius=20 90degree bend and enters the cooler plenum chamber from the top. = The=20 cooler is mounted on the right hand side of the fire wall and = the air=20 flow is down through the cooler. The air then exits from the cooler = into=20 the lower portion of the cowling and out to the exterior of the = plane. =20 There is no duct or hose on the discharge side. The cooler is a 9 = row=20 unit.

The NACA duct is one I bought from Butler and is = normally used=20 on race cars. Is there an optimum length for the opening on the = cowl side=20 to ensure the air flow enters the duct in sufficient = quantity?

Looking at the cowling from the front of the plane = the opening=20 is invisible as the cowling which is non standard is slightly wider at = the front=20 than the firewall so it is a slow taper to the firewall. There may = be a=20 dead spot there.

I did put a deflector on the lip of the duct, would = this help=20 to get air into the duct and would bending it further out into the slip = stream=20 improve the air flow?

I intend to verify the accuracy of the gauge in = boiling=20 water.

Does anyone have any good ideas?

Happy New Year to all

Ian Crowe.

------=_NextPart_000_0013_01C2B1AF.EE80B240--