X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 24 Jan 2013 08:32:00 -0500 Message-ID: X-Original-Return-Path: Received: from nm22-vm0.access.bullet.mail.mud.yahoo.com ([66.94.236.137] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 6026814 for lml@lancaironline.net; Wed, 23 Jan 2013 23:07:23 -0500 Received-SPF: neutral receiver=logan.com; client-ip=66.94.236.137; envelope-from=browncc1@verizon.net Received: from [66.94.237.194] by nm22.access.bullet.mail.mud.yahoo.com with NNFMP; 24 Jan 2013 04:06:47 -0000 Received: from [98.138.85.45] by tm5.access.bullet.mail.mud.yahoo.com with NNFMP; 24 Jan 2013 04:06:47 -0000 Received: from [127.0.0.1] by smtp102.vzn.mail.ne1.yahoo.com with NNFMP; 24 Jan 2013 04:06:47 -0000 X-Yahoo-Newman-Id: 185531.31412.bm@smtp102.vzn.mail.ne1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: 1U6h8NEVM1kShINsujIxEpniMhqJvpqAPbNuvcraCCiUu7t rPIhvGMCadZamW.L0_GGS0jXGkDtlgDXpk8ymRBlYNxW1z_hZ2jQwQYHe3_r 2tTT9XQpFUVGR7MGR5tP7NqWkjXO0Yz27mYtiyc_H1NgWVyaWNpJ5kOFMcux Y5nymab5oO5ZKwveDOYH_nvMWbUHcRmdlIHMIDkr5K8l4zaFamhvX2kLgr56 PeuxLtkZbdSnxDcYGpczMMXhxn.Nc2stEX8EQjeM1N5Luiopvfxx7FimS_5_ ZPdf1rlewmGRaJrRFx.WZNeMdLA_lAVCRVBVzPd2kZiQwegQ3IAKzXPx0I7X OK65txfWTCRoC1kwkb9j0hUg2LoblgdqK.OkH62sfh28E.MH5u3QUvEfTgad U3UMCxHPK6M1dB9Kfd39h0GaIKwFvwyf4eEZfrVSCHrzhORRj9AQa9CFVIxG VzfBBO5jyQ8WeNhhRAacQbVHcxBHqy4GJOFaaPhmNxExV4oT.B282pME73Pv QMVocT5tsfGQMQt9VT5eJ92Bj36oev1eqXgnHhNMgaFPM7PwUQ_zMmESzu7N Awhjd1SxH6jOTNjQ- X-Yahoo-SMTP: F49l9g6swBC0R9n8vJIbm7Tf3P8Xlmia8rHIwTlO__Ml Received: from chass-imac-2.home (browncc1@72.64.105.53 with plain) by smtp102.vzn.mail.ne1.yahoo.com with SMTP; 24 Jan 2013 04:06:47 +0000 UTC Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1085) Subject: Re: [LML] Plenum only to Cylinder heads From: Charles Brown In-Reply-To: X-Original-Date: Wed, 23 Jan 2013 22:06:45 -0600 Content-Transfer-Encoding: quoted-printable X-Original-Message-Id: References: X-Original-To: "Lancair Mailing List" X-Mailer: Apple Mail (2.1085) Definitely the deltaP across the alternator increases cooling airflow; = and if you exhausted it *above* the cylinders, you'd reduce that flow = somewhat. I have no idea what the cooling margin is on a typical = alternator; don't know if it would be a problem or not. On Jan 23, 2013, at 7:27 AM, Paul Miller wrote: Second: Why does the alternator duct exit below the engine? The exit = air may be warm but certainly less than CHT so why not duct the = alternator exit back into the upper deck and regain the pressure loss = that goes straight through the alternator and bypasses the cylinder = fins? Thoughts? Paul Legacy -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html