X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 17 Jan 2014 08:05:10 -0500 Message-ID: X-Original-Return-Path: Received: from fmailhost04.isp.att.net ([207.115.11.54] verified) by logan.com (CommuniGate Pro SMTP 6.0.8) with ESMTP id 6690915 for lml@lancaironline.net; Fri, 17 Jan 2014 07:29:08 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.54; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-142-195.mco.bellsouth.net[98.85.142.195]) by isp.att.net (frfwmhc04) with SMTP id <20140117122831H0400aovkie>; Fri, 17 Jan 2014 12:28:32 +0000 X-Originating-IP: [98.85.142.195] From: "Bill Bradburry" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] LNC2 airfilters X-Original-Date: Fri, 17 Jan 2014 07:28:35 -0500 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001F_01CF1355.BC417CB0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac8TVGA/5U7/tAVbRumZfGIazVbZBAAKoQ1w X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_001F_01CF1355.BC417CB0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Chris, My point exactly, an inch of ram might get you 5-10 hp with a 300 hp engine. But a knot or three would be a big result. I saw that the system is running on hot air from inside the cowl until it switches to ram. The big kick the pilot sees is probably from the switch from hot air to cold air and not from the ram effect. Bill _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Chris Zavatson Sent: Friday, January 17, 2014 2:19 AM To: lml@lancaironline.net Subject: [LML] LNC2 airfilters Bill, 220 to 227, is about 10% more power. The piece of information that is missing is what was installed on that particular aircraft before this airbox change. I saw a 5 kt increase going from a really bad filter arrangement (high loss, no ram) to a really good one (low loss with ram). 3% is quite a bit, so test conditions might be a bit suspect. Chris Zavatson N91CZ 360std http://www.n91cz.net/ ------=_NextPart_000_001F_01CF1355.BC417CB0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Chris,

 

My point exactly, an inch of ram = might get you 5-10 hp with a 300 hp engine.  But a knot or three would be a = big result.  I saw that the system is running on hot air from inside = the cowl until it switches to ram.  The big kick the pilot sees is probably = from the switch from hot air to cold air and not from the ram = effect.

 

Bill

 

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Chris Zavatson
Sent: Friday, January 17, = 2014 2:19 AM
To: = lml@lancaironline.net
Subject: [LML] LNC2 = airfilters

 

Bill,

=

220 to 227, is about 10% more power.  The piece of information that is missing = is what was installed on that particular aircraft before this airbox = change.  I saw a 5 kt increase going from a really bad filter arrangement (high = loss, no ram) to a really good one (low loss with ram).  3% is = quite a bit, so test conditions might be a bit = suspect. 

 

Chris Zavatson

N91CZ

=

360std

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