Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Fri, 12 Nov 2004 08:22:18 -0500 Message-ID: X-Original-Return-Path: Received: from [65.32.5.131] (HELO ms-smtp-01.tampabay.rr.com) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 528554 for lml@lancaironline.net; Thu, 11 Nov 2004 21:31:17 -0500 Received-SPF: none receiver=logan.com; client-ip=65.32.5.131; envelope-from=ckohler1@cfl.rr.com Received: from 34025820001 (255.204.202.68.cfl.rr.com [68.202.204.255]) by ms-smtp-01.tampabay.rr.com (8.12.10/8.12.7) with SMTP id iAC2UhlN002661 for ; Thu, 11 Nov 2004 21:30:44 -0500 (EST) X-Original-Message-ID: <000601c4c85f$c63f6bf0$6401a8c0@34025820001> From: "Charlie Kohler" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Engine Runups X-Original-Date: Thu, 11 Nov 2004 21:31:54 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Virus-Scanned: Symantec AntiVirus Scan Engine Dan Schaefer says; "Better than just using chocks, it's common practice (at least where I did my first run-ups) to tie the mains to some sort of anchor - like a car or whatever - with a couple of lengths of stout rope." Just a(nother) word of warning-- if the ropes are tied to the landing gear by the tire area--an extreme amount of stress is placed on the main landing gear actuator and --if hydraulic pressure is not available (ie circuit breaker pulled) -- the lock pin that holds the landing gear in the down position can/will be sheared. Best situation-- is to perform 1700 rpm leak runs with cowling off and a full set of chocks. If OK, Fully cowl the engine and after determining the brakes (if high-energy brakes used--make sure they are broken in--3--30 knots stops) and steering etc. are all normal. Then do a full power engine check on a long runway. 5000 feet or more is plenty of runway for a IV if power is added promptly and the run is aborted at 80 knots. You will achieve 80 knots by approximately 1500 feet. (Or less) Extend the speed brakes/no flaps. Take an observer-- to record data and all the engine fuel pressure/fuel flow-oil pressure/temperature . etc. etc.. Have copilot concentrate on engine instruments--you concentrate on airspeed , and outside the cockpit. Do not fly! It will be tempting. Charlie K.