Return-Path: Received: from smtp10.atl.mindspring.net ([207.69.200.246]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Tue, 23 Nov 1999 18:33:36 -0500 Received: from u2kmz ([209.138.40.85]) by smtp10.atl.mindspring.net (8.9.3/8.8.5) with SMTP id SAA07513 for ; Tue, 23 Nov 1999 18:38:03 -0500 (EST) From: marklisalally@mindspring.com Message-ID: <000701bf360c$5d1f40e0$55288ad1@u2kmz> To: "lancair mail" Subject: ES stall spead and runway length Date: Tue, 23 Nov 1999 18:42:09 -0500 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Greetings all Yes, 1700 ft leaves very little margin for error for landing an ES, and that is my dilemma I have not seen a official landing spec from the factory, but I have seen it in magazine articles listed at 1000 or 2000 ft. Nobody's consistent with the spec. Im not so sure a factory landing distance would be of any value anyway, given their 50 KIAS stall speed spec. In talking the few ES pilots I have had the opportunity to speak with so far, their consensus is that it is doable with practice, and I would not consider doing it until I have many hours doing just that at my local airport.(5500ft). Be that as it may, I do not want to be pushing the envelope, so I will do what ever is necessary to lower the stall speed and landing distance. So far this will include an AOA instrument, seam gap tapes and wing cuffs. Carsten will probably hate me for this, but I have been told that the factory plans to do a wing cuff retrofit, but no date has been set as of yet. Another consideration will be vortex generators. I have not mentioned take off distance because I do not believe this to be a problem, especially with the surplus power I plan to have available. As far as the landing gear being able to cope with a grass runway I also believe this will not be a problem, given the very stout main gear, although I may consider using larger main tires and wheels. My runway is also very smooth for a grass strip. I, Like Jim Cameron also enjoy the building process, and I keep doing things to stretch the process out, For example, leading edge landing-taxi lights [est 150 hours], removable flap hinge fairings [150 hours and still counting]. At this rate, and with all the other custom ideas I have in my head I should have plenty of time to sort out my landing distance problem. Mark Lally {once and only once, ES builder} >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html Builders' Bookstore: http://www.buildersbooks.com/lancair >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>