Return-Path: Sender: (Marvin Kaye) To: lml Date: Tue, 04 Jun 2002 09:56:18 -0400 Message-ID: X-Original-Return-Path: Received: from smtp.comcast.net ([24.153.64.2] verified) by logan.com (CommuniGate Pro SMTP 4.0b2) with ESMTP id 1281642 for lml@lancaironline.net; Tue, 04 Jun 2002 08:33:30 -0400 Received: from cp172883-b.arlngt01.va.comcast.net (pcp735631pcs.arlngt01.va.comcast.net [68.50.58.204]) by mtaout06.icomcast.net (iPlanet Messaging Server 5.1 HotFix 0.8 (built May 13 2002)) with SMTP id <0GX600E6PLEOJP@mtaout06.icomcast.net> for lml@lancaironline.net; Tue, 04 Jun 2002 08:30:24 -0400 (EDT) X-Original-Date: Tue, 04 Jun 2002 08:29:25 -0400 From: Bob Pastusek Subject: [LML] Compass mounting In-reply-to: X-Original-To: Lancair Mailing List Reply-to: rpastusek@htii.com X-Original-Message-id: <00d101c20bc3$7674f5a0$6501a8c0@cp172883-b.arlngt01.va.comcast.net> MIME-version: 1.0 X-MIMEOLE: Produced By Microsoft MimeOLE V4.72.2106.4 X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT Importance: Normal X-Priority: 3 (Normal) X-MSMail-priority: Normal Gary Wolfe asked: Has anyone mounted the compass on the windshield of the IV-P? ... Will the pressurization be a problem? We're at about 85% on our two Lancair IV-P's, so can't speak from experience, but my practical engineering sense says don't attach anything to the windshield. Jim White and I calculated the load on the windshield at greater than 5,000 pounds when fully pressurized, plus an uncomputed additional load due to the wind over the surface. The air load should "push on" the window near the base, but "pull" on it near the top. My unsubstantiated opinion is that if you lose the windshield, you'll likely lose the airplane. Bob Pastusek ############################################################# For archives see the LML website: http://www.lancaironline.net/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair