X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 23 Aug 2005 10:48:30 -0400 Message-ID: X-Original-Return-Path: Received: from smtp104.sbc.mail.mud.yahoo.com ([68.142.198.203] verified) by logan.com (CommuniGate Pro SMTP 5.0c1) with SMTP id 678930 for lml@lancaironline.net; Tue, 23 Aug 2005 10:32:31 -0400 Received-SPF: none receiver=logan.com; client-ip=68.142.198.203; envelope-from=skiplong@videocomm.com Received: (qmail 47762 invoked from network); 23 Aug 2005 14:31:47 -0000 Received: from unknown (HELO dell600m) (skiplong@sbcglobal.net@63.205.65.255 with login) by smtp104.sbc.mail.mud.yahoo.com with SMTP; 23 Aug 2005 14:31:46 -0000 From: "Skip Long" X-Original-To: "Lancair Mailing List" Subject: LNC4 S-tec 55X altitude hold X-Original-Date: Tue, 23 Aug 2005 07:31:46 -0700 X-Mailer: Microsoft Office Outlook, Build 11.0.6353 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Thread-index: AcWn72Oj3g9Ff3nqRhqSqWMHe4hsQA== X-Original-Message-ID: During today's phase 1 flight I started checking the autopilot, an S-Tec 55x. When altitude hold is engaged the aircraft starts to porpoise. Acts like the pitch servo is making a larger correction then is necessary for the sensitive pitch of a IV. Has anyone had this problem? Skip Skip Long N47SL, HWD (650) 578-9167 FAX 576-9153 mailto:skiplong@videocomm.com