X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 26 Nov 2008 19:01:38 -0500 Message-ID: X-Original-Return-Path: Received: from mailgate-internal4.sri.com ([128.18.84.114] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with SMTP id 3316741 for lml@lancaironline.net; Tue, 25 Nov 2008 12:09:47 -0500 Received-SPF: none receiver=logan.com; client-ip=128.18.84.114; envelope-from=thomas.low@sri.com Received: from smssmtp-internal2.sri.com (128.18.84.116) by mailgate-internal4.sri.com with SMTP; 25 Nov 2008 17:09:08 -0000 X-AuditID: 80125474-aa194bb000000a40-3a-492c31345712 Received: from mars.esd.sri.com (mars.esd.sri.com [128.18.26.200]) by smssmtp-internal2.sri.com (Symantec Mail Security) with ESMTP id 43B9121AF2B for ; Tue, 25 Nov 2008 09:09:08 -0800 (PST) MIME-version: 1.0 Content-type: multipart/alternative; boundary="Boundary_(ID_RQeSrqsK4EJ2R5XuHY3x1Q)" Received: from tlowpc ([128.18.14.156]) by mars.esd.sri.com (Sun Java(tm) System Messaging Server 6.3-3.01 (built Jul 12 2007; 32bit)) with ESMTPA id <0KAW00D1DFN45P40@mars.esd.sri.com> for lml@lancaironline.net; Tue, 25 Nov 2008 09:09:04 -0800 (PST) From: Thomas Low X-Original-To: lml@lancaironline.net Subject: Carb Heat on O-235 X-Original-Date: Tue, 25 Nov 2008 09:09:08 -0800 X-Original-Message-id: <038f01c94f20$87425970$9c0e1280@esd.sri.com> X-Mailer: Microsoft Office Outlook 11 Thread-index: AclPIIceDs6/W/jJTWezsZSTRjJrRw== X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.3350 X-Brightmail-Tracker: AAAAAA== This is a multi-part message in MIME format. --Boundary_(ID_RQeSrqsK4EJ2R5XuHY3x1Q) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Guys I'm curious if anyone with a carbureted Lancair is getting any significant temperature rise with crab heat. I too see only about 10F rise, with a muff over both stacks at the crossover, and a short about 4 inch length of SCAT tube, into the air box. I've tried wrapping springs around the stack to improve heat transfer, as I was concerned about steel ingestion if I used the brillo pad idea. The heat box door is a pretty good fit in the box, and I've added thermocouples to several locations between the stack and carb, to better understand what's going on. If someone has a system that is effective in heating intake air, please post photo's. Thanks Tom --Boundary_(ID_RQeSrqsK4EJ2R5XuHY3x1Q) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7BIT

Guys

I’m curious if anyone with a carbureted Lancair is getting any significant temperature rise with crab heat. I too see only about 10F rise, with a muff over both stacks at the crossover, and a short about 4 inch length of SCAT tube, into the air box. I’ve tried wrapping springs around the stack to improve heat transfer, as I was concerned about steel ingestion if I used the brillo pad idea. The heat box door is a pretty good fit in the box, and I’ve added thermocouples to several locations between the stack and carb, to better understand what’s going on. If someone has a system that is effective in heating intake air, please post photo’s.

Thanks

Tom

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