X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 07 Jul 2009 15:25:39 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-scoter.atl.sa.earthlink.net ([209.86.89.67] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3748010 for lml@lancaironline.net; Tue, 07 Jul 2009 12:39:42 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.67; envelope-from=leighton@teleport.com DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=teleport.com; b=bhzXggUWwTR9/EUZMzOuYg+R9PJPOGS2qyREielmGhzjKiCuFkGeSiK40kynMT++; h=Received:Message-ID:From:To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [67.189.97.236] (helo=leighton495c8e) by elasmtp-scoter.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1MODhD-0008Or-2H for lml@lancaironline.net; Tue, 07 Jul 2009 12:39:07 -0400 X-Original-Message-ID: <4D5CAF78C17B47A0BE2CD5E62A2B5907@leighton495c8e> From: "Leighton Mangels" X-Original-To: "Lancair Mail list" Subject: Simplistic gear up solution X-Original-Date: Tue, 7 Jul 2009 09:39:01 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_001A_01C9FEE6.C228B270" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-ELNK-Trace: ea0fe3d44b30ba0fc355332e9c4b49d599594df05feb3df1e0a4f2db172ba91119d2e04847544395350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 67.189.97.236 This is a multi-part message in MIME format. ------=_NextPart_000_001A_01C9FEE6.C228B270 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I like Randy's 5 criteria for problem solving and have a slight = variation to his washing machine switches. We've used an adjustable = pressure switch from Omega Industries (Omega.com) successfully for a = gear safety switch and it could also be used to activate an aural and/or = visual warning if the gear is up and the airspeed gets too low by wiring = it in series through the gear switch. It's part #PSW21A and is less = than $40. It comes with normally open and normally closed contacts and = could function as both "squat switch" and gear-not-down warning trigger. = That would require the gear warning to be approximately the same speed = as the gear safety feature which some might consider too low. If so, = using a second switch would solve that problem. I usually adjust the = switch to trip at about 4" H2O which is about 80 knots. That might be = lower than desired for a gear warning. Your call. The only downside I = see is that it would be cool to be able to tell people I have washing = machine parts in my plane. Leighton Mangels ------=_NextPart_000_001A_01C9FEE6.C228B270 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I like Randy's 5 criteria for problem = solving and=20 have a slight variation to his washing machine switches.  We've = used an=20 adjustable pressure switch from Omega Industries=20 (Omega.com)  successfully for a gear safety switch and it = could also=20 be used to activate an aural and/or visual warning if the gear is up and = the=20 airspeed gets too low by wiring it in series through the gear = switch.  It's=20 part #PSW21A and is less than $40.  It comes with normally open and = normally closed contacts and could function as both "squat switch" and=20 gear-not-down warning trigger.  That would require the gear warning = to be=20 approximately the same speed as the gear safety feature which some might = consider too low.  If so, using a second switch would solve that=20 problem.  I usually adjust the switch to trip at about 4" H2O which = is=20 about 80 knots.  That might be lower than desired for a gear = warning. =20 Your call.  The only downside I see is that it would be cool to be = able to=20 tell people I have washing machine parts in my plane.
 
Leighton Mangels
 
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