X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 09 Feb 2010 20:40:15 -0500 Message-ID: X-Original-Return-Path: Received: from nskntmtas05p.mx.bigpond.com ([61.9.168.149] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4118561 for lml@lancaironline.net; Tue, 09 Feb 2010 20:39:28 -0500 Received-SPF: pass receiver=logan.com; client-ip=61.9.168.149; envelope-from=frederickmoreno@bigpond.com Received: from nskntotgx03p.mx.bigpond.com ([121.221.192.154]) by nskntmtas05p.mx.bigpond.com with ESMTP id <20100210013850.ERPH1824.nskntmtas05p.mx.bigpond.com@nskntotgx03p.mx.bigpond.com>; Wed, 10 Feb 2010 01:38:50 +0000 Received: from Razzle ([121.221.192.154]) by nskntotgx03p.mx.bigpond.com with ESMTP id <20100210013849.PXJE24930.nskntotgx03p.mx.bigpond.com@Razzle>; Wed, 10 Feb 2010 01:38:49 +0000 From: "Frederick Moreno" X-Original-To: , "'Lancair Mailing List'" Subject: Insulating SCAT tubing X-Original-Date: Wed, 10 Feb 2010 09:38:38 +0800 X-Original-Message-ID: <011c01caa9f1$c65e1ef0$531a5cd0$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_011D_01CAAA34.D4815EF0" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Acqp8cIabqSJ79kwRGqhIb3/YZzpYw== Content-Language: en-au x-cr-hashedpuzzle: CC2G CxUR ELyk FCVC HlTQ JWzj KbeN LXfk Lfz3 MSgw Ms0T NmRJ N+HM PPBX QrHU SWez;2;YgBpAGwAbABoAG8AZwBhAHIAdAB5AEAAaAB1AGcAaABlAHMALgBuAGUAdAA7AGwAbQBsAEAAbABhAG4AYwBhAGkAcgBvAG4AbABpAG4AZQAuAG4AZQB0AA==;Sosha1_v1;7;{C821C853-0820-4696-8502-84C4326D57FA};ZgByAGUAZABlAHIAaQBjAGsAbQBvAHIAZQBuAG8AQABiAGkAZwBwAG8AbgBkAC4AYwBvAG0A;Wed, 10 Feb 2010 01:38:34 GMT;SQBuAHMAdQBsAGEAdABpAG4AZwAgAFMAQwBBAFQAIAB0AHUAYgBpAG4AZwA= x-cr-puzzleid: {C821C853-0820-4696-8502-84C4326D57FA} X-RPD-ScanID: Class unknown; VirusThreatLevel unknown, RefID str=0001.0A150201.4B720E2A.0063,ss=1,fgs=0 X-SIH-MSG-ID: qB82END+TFa2kTAvmTy2alorgFm6/gF5uMhSBI0wt0lHEVbCu8DAQciibaJIw5Dn0TpcUU/RLhd1MbzlXZ/Rs9OzKbZUWqDb5/kMsw== This is a multi-part message in MIME format. ------=_NextPart_000_011D_01CAAA34.D4815EF0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Shiny aluminum tape will help a little by reflecting infrared energy off of the SCAT tubing which would be significant if the SCAT tubing can =93see= =94 the red hot exhaust pipes. =20 =20 But much of the heating is due to passage of hot air over the tubing which heats the air passing through the SCAT. A better solution is to wrap SCAT with 1/8 inch thick insulating felt (ceramic high temperature stuff available from Aircraft Spruce for firewalls- cut with scissors and wrap around SCAT and hold with stainless safety wire) and then slip this throug= h larger diameter SCAT hose to act as a protective cover and to keep fuel and oil from soaking the felt insulation. You end up with a circular sandwich: SCAT inside of insulation about =BC inch thick inside of SCAT. This will g= o a long way to keeping the third intercooler discharge air from being reheated on its way back to the firewall. A 10 degree F reduction would be significant in a warm cabin.=20 =20 Fred ------=_NextPart_000_011D_01CAAA34.D4815EF0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Shiny aluminum tape w= ill help a little by reflecting infrared energy off of the=A0 SCAT tubing which woul= d be significant if the SCAT tubing can “see” the red hot exhaust pi= pes.=A0

But much of the heati= ng is due to passage of hot air over the tubing which heats the air passing throu= gh the SCAT.=A0 A better solution is to wrap SCAT with 1/8 inch thick insulati= ng felt (ceramic high temperature stuff available from Aircraft Spruce for firewalls- cut with scissors and wrap around SCAT and hold with stainless safety wire)=A0 and then slip this through larger diameter SCAT hose to act= as a protective cover and to keep fuel and oil from soaking the felt insulation.= =A0 You end up with a circular sandwich: SCAT inside of insulation about =BC inch t= hick inside of SCAT.=A0 This will go a long way to keeping the third intercooler discharge air from being reheated on its way back to the firewall.=A0 A 10 = degree F reduction would be significant in a warm cabin.

Fred

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