<html><body>
<DIV>Sorry for the multiple incomplete posts-</DIV>
<DIV>Ron Lockhart</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: ronlock@comcast.net <BR>
<DIV>Since were still guessing at cause of pull to top in knife edge,</DIV>
<DIV>Here is my Suspect -</DIV>
<DIV>Stab is on bottom of fuse- true with this design?</DIV>
<DIV>When rudder is applied, air pressure builds at intersection of fuse & Fin, </DIV>
<DIV>with the top of the stab. Pressure on top of stab creates a nose up condition. There is no equivalent pressure on bottom, cause there is little or no fuse and fin.</DIV>
<DIV> </DIV>
<DIV>If that is the cause, adding a strake to bottom might improve it.</DIV>
<DIV> </DIV>
<DIV>Later, Ron Lockhart</DIV>
<DIV> </DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: "John Ferrell" <johnferrell@earthlink.net> <BR><BR>> My Guess: <BR>> The sum of the drag vectors is well above the vertical CG. You MIGHT be able <BR>> to help the condition with really big wheels generating some drag down low. <BR>> Its anybody's guess what the turbulance might trigger. <BR>> <BR>> The wing is not lifting in knife edge, but it is still draggin'. <BR>> <BR>> John Ferrell <BR>> http://DixieNC.US <BR>> <BR>> ----- Original Message ----- <BR>> From: "John Pavlick" <JPAVLICK@IDSENG.COM><BR>> To: "NSRCA Discussion" <NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> Sent: Friday, January 27, 2006 11:31 PM <BR>> Subject: [NSRCA-discussion] Trimming question <BR>> <BR>> <BR>> > Ok here's a good one. The owner of the L.H.S. asked me what I thought <BR>> > about <BR>&g! t; > this and I couldn't come up with a good answer. He has a Hangar 9 Ugly <BR>> > Stik - the real big one. I can't remember exactly what it's called. Guess <BR>> > it <BR>> > has a gas motor in it. It's big. He says he has it trimmed so it will fly <BR>> > inverted with just a very slight bit of down elevator (almost none). Ok, <BR>> > so <BR>> > it's not nose heavy, maybe even a little tail heavy. Now, when he flies it <BR>> > knife edge (either side) it pulls severely to the canopy. I mean like it <BR>> > will fly a complete circle. It needs almost 3/4 down elevator to fly <BR>> > straight. It's beyond a mix - fix. He also says that it has a bit of roll <BR>> > couple when flying level (not knife edge) but it doesn't pitch severely up <BR>> > or down under these conditions. Any thoughts? I guess you can rule out <BR>> > C.G. <BR>> > because if anything it should pull to the belly considerin! g how it's <BR>> > trimmed <BR>> > to fly level up
right an d inverted. I haven't flown it so I can't add too <BR>> > much more. He builds OK so I don't think there's anything way out of <BR>> > alignment, but again I haven't seen it yet so maybe there is. What should <BR>> > I <BR>> > look for if I get my hands on it to try and help him? <BR>> > <BR>> > John Pavlick <BR>> > http://www.idseng.com <BR>> > <BR>> > -- <BR>> > No virus found in this outgoing message. <BR>> > Checked by AVG Free Edition. <BR>> > Version: 7.1.375 / Virus Database: 267.14.23/243 - Release Date: 1/27/06 <BR>> > <BR>> > _______________________________________________ <BR>> > NSRCA-discussion mailing list <BR>> > NSRCA-discussion@lists.nsrca.org <BR>> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion <BR>> > <BR>> <BR>> <BR>> _______________________________________________ <BR>> NSRCA-discussion mailing list <BR>> NSRCA-discussion! @lists.nsrca.org <BR>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion </BLOCKQUOTE></BLOCKQUOTE></body></html>