X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 03 Dec 2005 13:33:02 -0500 Message-ID: X-Original-Return-Path: Received: from msa1-gh.centurytel.net ([209.206.160.251] verified) by logan.com (CommuniGate Pro SMTP 5.0.3) with ESMTP id 861895 for lml@lancaironline.net; Sat, 03 Dec 2005 12:50:52 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.206.160.251; envelope-from=rsmiley@centurytel.net Received: from DOWNSTAIRS (d31-222.rb.gh.centurytel.net [69.29.222.222]) by msa1-gh.centurytel.net (8.13.4/8.13.4) with SMTP id jB3Ho2dF002180 for ; Sat, 3 Dec 2005 11:50:02 -0600 X-Original-Message-ID: <001e01c5f831$fec35fb0$927dfea9@DOWNSTAIRS> From: "Bob Smiley" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Dead landing gear X-Original-Date: Sat, 3 Dec 2005 09:50:05 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 >".. maybe I'm a bit confused, but isn't the purpose of the > > squat switch to prevent activation of the landing gear > > retraction while the airplane is on the ground? I > would > expect the gear to operate normally when on the jacks > -- > just as it would in the air." The squat switches we normally use are operated upon the principle of air pressure on a diaphram to close the circuit for activation. No airspeed below about 80 mph breaks the circuit hence the gear will not operate. A plane on the jacks is going nowhere hence open circuit. Bob Smiley N94RJ