X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 20 Jun 2005 21:31:12 -0400 Message-ID: X-Original-Return-Path: Received: from [208.57.0.7] (HELO mgci.com) by logan.com (CommuniGate Pro SMTP 4.3.4) with SMTP id 1008201 for lml@lancaironline.net; Mon, 20 Jun 2005 19:00:54 -0400 Received-SPF: none receiver=logan.com; client-ip=208.57.0.7; envelope-from=woodruff@swefco.com Received: (qmail 30962 invoked by uid 0); 20 Jun 2005 23:00:17 -0000 Received: from unknown (HELO ?192.168.0.2?) (66.18.129.84) by mgci.com with SMTP; 20 Jun 2005 23:00:17 -0000 User-Agent: Microsoft-Entourage/10.1.4.030702.0 X-Original-Date: Mon, 20 Jun 2005 16:00:08 -0700 Subject: Re: [LML] Re: Induction air filter From: Hal Woodruff X-Original-To: Lancair Mailing List X-Original-Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: multipart/alternative; boundary="B_3202128008_1072386" > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3202128008_1072386 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable I may not be understanding the setup with this system, but it appears that filtered air is gained from inside the hot end of the cowling. With this arrangement I=B9d be most concerned with the effect on the power produced whe= n you need power the most =AD at takeoff. I have no idea what the temperature= s might be but it seems as though they=B9d be significantly higher than ambient= . 50=B0, 100=B0, 150=B0 more? This has got to have an adverse effect on the power output. Some other questions that come to mind is: 1. what about the possibility of detonation with really =B3hot=B2 induction air when taking off o= n a hot day? 2. What is the effect on the mixture ratio when inducting hot air ? Wouldn=B9t you have an extremely rich mixture for takeoff? I may be way off base, but the effects during takeoff of this system could be catastrophic. I personally would want to get some more information before committing to this induction setup. To fix this, possibly, the filtered air could be baffled to be in the cold air section of the cowl. Maybe put a chamber around the filter and duct cold air from the cold side of the cowl. Just thoughts... Hal Woodruff --B_3202128008_1072386 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [LML] Re: Induction air filter I may not be understand= ing the setup with this system, but it appears that filtered air is gained f= rom inside the hot end of the cowling.  With this arrangement I’d= be most concerned with the effect on the power produced when you need power= the most – at takeoff.   I have no idea what the temperatur= es might be but it seems as though they’d be significantly higher than= ambient.  50°, 100°, 150° more?  This has got to have= an adverse effect on the power output.  Some other questions that come= to mind is:  1.  what about the possibility of detonation with re= ally “hot” induction air when taking off on a hot day?  2. = What is the effect on the mixture ratio when inducting hot air ?  Would= n’t you have an extremely rich mixture for takeoff?

I may be way off base, but the effects during takeoff of this system could = be catastrophic.  I personally would want to get some more information = before committing to this induction setup.

To fix this, possibly, the filtered air could be baffled to be in the cold = air section of the cowl.  Maybe put a chamber around the filter and duc= t cold air from the cold side of the cowl.  Just thoughts...


Hal Woodruff --B_3202128008_1072386--