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 ch1outboundpool.messaging.microsoft.com ([216.32.181.184] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTPS id 6026760 for lml@lancaironline.net; Wed, 23 Jan 2013 21:03:36 -0500 Received-SPF: pass receiver=logan.com; client-ip=216.32.181.184; envelope-from=rpastusek@htii.com Received: from mail139-ch1-R.bigfish.com (10.43.68.241) by CH1EHSOBE001.bigfish.com (10.43.70.51) with Microsoft SMTP Server id 14.1.225.23; Thu, 24 Jan 2013 02:03:00 +0000 Received: from mail139-ch1 (localhost [127.0.0.1]) by mail139-ch1-R.bigfish.com (Postfix) with ESMTP id 353DA18018D for ; Thu, 24 Jan 2013 02:03:00 +0000 (UTC) X-Forefront-Antispam-Report: CIP:157.56.245.5;KIP:(null);UIP:(null);IPV:NLI;H:CH1PRD0710HT002.namprd07.prod.outlook.com;RD:none;EFVD:NLI X-SpamScore: -1 X-BigFish: PS-1(zz98dIc85fhzz1ee6h1de0h1202h1e76h1d1ah1d2ahzz17326ah8275dh18c673h8275bhz2fh2a8h668h839hd25hf0ah1288h12a5h12bdh137ah1441h1504h1537h153bh15d0h162dh1631h1758h18e1h1155h) Received-SPF: pass (mail139-ch1: domain of htii.com designates 157.56.245.5 as permitted sender) client-ip=157.56.245.5; envelope-from=rpastusek@htii.com; helo=CH1PRD0710HT002.namprd07.prod.outlook.com ;.outlook.com ; Received: from mail139-ch1 (localhost.localdomain [127.0.0.1]) by mail139-ch1 (MessageSwitch) id 1358992945689934_20823; Thu, 24 Jan 2013 02:02:25 +0000 (UTC) Received: from CH1EHSMHS007.bigfish.com (snatpool1.int.messaging.microsoft.com [10.43.68.242]) by mail139-ch1.bigfish.com (Postfix) with ESMTP id A561740011E for ; Thu, 24 Jan 2013 02:02:25 +0000 (UTC) Received: from CH1PRD0710HT002.namprd07.prod.outlook.com (157.56.245.5) by CH1EHSMHS007.bigfish.com (10.43.70.7) with Microsoft SMTP Server (TLS) id 14.1.225.23; Thu, 24 Jan 2013 02:02:25 +0000 Received: from CH1PRD0710MB367.namprd07.prod.outlook.com ([169.254.11.139]) by CH1PRD0710HT002.namprd07.prod.outlook.com ([10.255.152.37]) with mapi id 14.16.0257.004; Thu, 24 Jan 2013 02:02:24 +0000 From: Robert R Pastusek X-Original-To: Lancair Mailing List Subject: RE: [LML] Question: Adelaide LIVP Thread-Topic: [LML] Question: Adelaide LIVP Thread-Index: AQHN+YDD/WodJHby+0+LulTSoqcq3phXsbMg X-Original-Date: Thu, 24 Jan 2013 02:02:23 +0000 X-Original-Message-ID: <41361035E6613244A377D5AC3BF5EFDD4A85A841@CH1PRD0710MB367.namprd07.prod.outlook.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [67.98.47.206] Content-Type: multipart/alternative; boundary="_000_41361035E6613244A377D5AC3BF5EFDD4A85A841CH1PRD0710MB367_" MIME-Version: 1.0 X-Original-Return-Path: rpastusek@htii.com X-OriginatorOrg: htii.com --_000_41361035E6613244A377D5AC3BF5EFDD4A85A841CH1PRD0710MB367_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Fred wrote: Henry Shultz in Adelaide asked me to post the attached picture. He asks: This picture is from a fast build and the owner spent 2 weeks at the factor= y building but did no more before he sold it. They have added chicken plate= s along the sides of the exhaust tunnels. Is this something we should be doing with our older LIVP kit? Not being a pressurized guy (I'm much more relaxed these days), I could not= help. Anybody have any guidance? Fred, I completed my 1999 Lancair IV-P kit in 2008 and am reasonably sure there = was no SB or other instruction to add chicken plates in this area posted du= ring that period. The fuselage is well rounded in that area, removing one o= f the principal reasons for installing them-to prevent peel-type separation= of components where the pressure vessel had square (as opposed to curving= ) joints. My IV-P has about 900 flight hours without chicken plates in this= location, and I've had no difficulties with cracking/peeling in this area = (or any other for that matter). My opinion is that this is an example of an "improvement" that is not. At t= he minimum this adds unnecessary weight, and although I don't see it, could= add stress on adjacent components. I believe that design work of the origi= nal engineers can occasionally be improved, but that this should always be = undertaken with the presumption that there are always unintended, and somet= imes unexpected, consequences. My recommendation would be to remove the afo= rementioned chicken plates and patch the holes... Bob --_000_41361035E6613244A377D5AC3BF5EFDD4A85A841CH1PRD0710MB367_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Fred wro= te:<= o:p>

 

Henry Shultz in Adelaide asked me= to post the attached picture.  He asks:

 

This picture is from a fast build= and the owner spent 2 weeks at the factory building but did no more before he sold it. They have added chicken plates along the sides of the exhaust = tunnels.

 

Is this something we should be doing w= ith our older LIVP kit?

 

Not being a pressurized guy (I'm much = more relaxed these days), I could not help.   Anybody have any gu= idance?

 =

&nb= sp;

Fred,

&nb= sp;

 I = completed my 1999 Lancair IV-P kit in 2008 and am reasonably sure there was no SB or other instruction to add chicken plates in this area posted durin= g that period. The fuselage is well rounded in that area, removing one of t= he principal reasons for installing them—to prevent peel-type separat= ion of components where the pressure vessel had  square (as opposed to cu= rving) joints. My IV-P has about 900 flight hours without chicken plates in= this location, and I’ve had no difficulties with cracking/peeling in= this area (or any other for that matter).

M= y opinion is that this is an example of an “improvement” that i= s not. At the minimum this adds unnecessary weight, and although I don̵= 7;t see it, could add stress on adjacent components. I believe that design wor= k of the original engineers can occasionally be improved, but that this sho= uld always be undertaken with the presumption that there are always uninten= ded, and sometimes unexpected, consequences. My recommendation would be to remove the aforementioned chicken plates and= patch the holes…

<= br> Bob

 

 

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