Return-Path: Received: from mtiwmhc23.worldnet.att.net ([204.127.131.48]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Sat, 29 Apr 2000 23:06:51 -0400 Received: from default- ([12.74.129.29]) by mtiwmhc23.worldnet.att.net (InterMail vM.4.01.02.39 201-229-119-122) with SMTP id <20000430031237.POQJ1747.mtiwmhc23.worldnet.att.net@default-> for ; Sun, 30 Apr 2000 03:12:37 +0000 Message-ID: <002201bfb1ed$8743db80$1d814a0c@default-> Reply-To: "John Wright" From: "John Wright" To: "LML" Subject: Re: LNC IV-P window blow-out Date: Sat, 29 Apr 2000 09:13:50 -0600 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Brent, I always appreciate your posts and insights into tough problems. How did you couple the hose on your compressor to the air mixer box on your ground testing? One thing to think about is that 7.5psi in the cabin on the ground is a much smaller pressure differential than flying with a 5psi cabin pressure with an outside density altitude of 29,000'. You would probably have to pump the cabin pressure up higher than 7.5psi to really simulate flying in the flight levels. John Wright iv-p Colorado Springs -----Original Message----- From: Brent Regan To: Lancair List Date: Thursday, April 27, 2000 10:15 AM Subject: Re: LNC IV-P window blow-out >I have a little advice for IV-P builders/owners out there regarding the >cabin door window. My comments are based on my personal experience and >common sense. Unfortunately, I am an idiot so you must discount everything I >say and figure things out for yourself. > >Here we go: >The windows in the IV-P are like the skin of a balloon, tough and flexible, >but if you apply the right stress at the right place they will to the test >pressure. To any IV-P pilot out there who has done this I have one question. >Are you freaking nuts? > >FAR 23.1428 calls for proof pressure testing to 1.5 times the normal >operating pressure. This is not a requirement for the builder but I think it >is a good idea. Perform the pressure test prior to painting the a >Regards >Brent Regan > >> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>