Return-Path: Sender: (Marvin Kaye) To: lml Date: Thu, 11 Sep 2003 20:23:42 -0400 Message-ID: X-Original-Return-Path: Received: from [199.185.220.223] (HELO priv-edtnes15-hme0.telusplanet.net) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2576478 for lml@lancaironline.net; Thu, 11 Sep 2003 19:54:18 -0400 Received: from GLLAPTOP ([142.179.201.236]) by priv-edtnes15-hme0.telusplanet.net (InterMail vM.5.01.05.17 201-253-122-126-117-20021021) with SMTP id <20030911235418.BEWJ7549.priv-edtnes15-hme0.telusplanet.net@GLLAPTOP> for ; Thu, 11 Sep 2003 17:54:18 -0600 X-Original-Message-ID: <00e701c378c0$35c34730$3e01a8c0@doctorseyecare.ab.ca> From: "Gerry Leinweber" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: LIVP flying. X-Original-Date: Thu, 11 Sep 2003 17:55:42 -0600 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 6.00.2800.1158 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Bill mentioned again that he experiences stiff ailerons when flying at cruise. He refers to using gap tape to try and fix this. I have little knowledge about this, but will relate again our experiences with stiff ailerons. We had stiff ailerons which caused lots of problems with getting our STec55 working properly, but found our problem was that as the cabin pressurized, it deformed just enough to increase the pressure on the fore and aft hinge of the control rod. Bud Clarke of AirRyder (Helena, Montana) worked with us when he was up for a visit and together we got the problem defeated. Bottom line, unless there is sufficient play in your control rods, when pressuriztion occurs, the cabin will bulge out slightly and THIS COULD be the cause of the stiff ailerons in many of our planes. I was told over and over that the stiff controls were due to the high speed of flight, and with no objective manner of measuring how stiff stiff really is, I suggest the following test. Fly your IV-P at 8K - 10K first without the door seal inflated, and pressurization rate to the lowest to ensure there is no pressurization. PSI on your pressure guage should read Zero. Feel the controls at various speeds (say down to 120 from 200 KIAS with 10 KIAS intervals) and then when going slow, inflate your door, turn up the pressurization rate control, (you want at least a PSI of 2.0 and hopefully more) and increase speed by 10 KIAS intervals, making a turn each way at each interval. Rate the stick force required (make sure you use the same place on the stick to avoid experimental error) and if at one point the controls get a lot stiffer, I would suggest you consider calling Bud Clarke to help you get your problem fixed. That is what worked for us, and while we did a number of other small adjustments, none of them were as dramatic as loosening the controls so they did not bind as the cabin pressurized. Gerry Leinweber C-GLFP 150 Hours and happy with my AutoPilot now