X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 01 Oct 2008 16:26:45 -0400 Message-ID: X-Original-Return-Path: Received: from smtp115.sbc.mail.re3.yahoo.com ([66.196.96.88] verified) by logan.com (CommuniGate Pro SMTP 5.2.8) with SMTP id 3195032 for lml@lancaironline.net; Wed, 01 Oct 2008 16:00:03 -0400 Received: (qmail 84142 invoked from network); 1 Oct 2008 20:00:03 -0000 Received: from unknown (HELO ?192.168.1.64?) (lorn@69.208.116.4 with plain) by smtp115.sbc.mail.re3.yahoo.com with SMTP; 1 Oct 2008 20:00:02 -0000 X-YMail-OSG: RNaEypkVM1mxLAb4tGn2DclV9mGa5Umj4YMzj4h_BSrIMqjVvwJRIDm8HbVmN4W3RmGEEawMPNAncKHJodD_NtuMx2Z68JsYgXFddoDUgCyLeAfawjWMsGNTinDq9IFZCJKsHXJkcq5I92mmvqzVfRFTEapwLqPTxfTjCKLrw3va.g6H3g-- X-Yahoo-Newman-Property: ymail-3 X-Original-Message-Id: <503D713C-DDB2-46EE-B95C-BF1EF37B4800@dynacomm.us> From: Lorn H Olsen X-Original-To: Lancair List Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Apple Message framework v929.2) Subject: Re: Small tail vs. large tail X-Original-Date: Wed, 1 Oct 2008 15:59:59 -0400 X-Mailer: Apple Mail (2.929.2) Mark & Scott, My empty CG is 22.3". With a 150# pilot and 8 gal in the header I =20 would be at 24.5". My fore and aft CG limits are 24.9" and 30.6". With my harmonic dampener, Aero Composites prop, me (250#), 20# of =20 tools up front, 5 more in back and full header. I get: 25.7". I land =20 like this some times but can only use 25=B0 of flap. No wonder I don't =20= have enough elevator. Loaded up a lot to 1,900#, my CG is 29.5" and thats pretty far back. Lorn > From: Sky2high@aol.com > Date: September 30, 2008 10:47:55 AM GMT-04:00 > > Mark, > > Even more interrrrresting........ > > What is your empty weight CG? Mine is 20.8" Also, with a 150# =20 > pilot and 8 gal in the header my CG would be out of the forward =20 > envelope at 23.4"" (12% MAC). BTW, I have a 12# harmonic damper on =20= > the flywheel along with the heaviest Hartzell prop. > > What is your flap setting for these landings? Moving the flaps up =20 > somewhat can change the pitch authority and I wonder if you have =20 > tried using the flaps to assist in elevator authority. > >> Scott >> >> In a message dated 9/29/2008 12:14:46 P.M. Central Daylight Time, = mjrav@comcast.net=20 >> writes: >> I suppose I qualify at 150 lbs. >> Std 360, battery in the footwell, Hartzel CS prop. >> >> Generally, I make a point to NOT have all fuel in the header on a =20 >> lightweight landing. Having it 1/4 to 1/2 full is safe enough. >> What happens is that I run out of aft stick travel in the flare and =20= >> will have a hard landing if I'm not very close to wheels down. >> The further foreward the CG, the faster the landing speed must be. =20= >> Mostly, it's just hard on the tires. >> . >> . >> Mark Ravinski >> 360 1447 hrs 1077 of it mine.