<div>Absolutely no mixes...none required for straight flight on hot days.</div> <div> </div> <div><BR><BR><B><I>Rex LESHER <trexlesh@msn.com></I></B> wrote:</div> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="MSHTML 6.00.2900.2963" name=GENERATOR><!--[gte IE 5]><?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> <DIV> <DIV>Just curious.... what radio are you using? Do you have mixes set up for roll coupling? If so, do you have the trims set to "active" in the mixes? If not, this could be the reason for the pitching. Without active trim in the mixes, all offset will be based from the original servo position in setup, not from the current flying position after the trim was moved.</DIV> <DIV> </DIV> <DIV>Rex</DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid;
MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="FONT: 10pt arial"><B>From:</B> <A title=mailto:Tom.Koenig@actewagl.com.au href="mailto:Tom.Koenig@actewagl.com.au">Koenig, Tom</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=mailto:nsrca-discussion@lists.nsrca.org href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, September 11, 2006 2:42 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Trimming question.</DIV> <DIV><BR></DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff>All-Dean,</FONT></SPAN></DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff>I think you could be onto something there. I like to fly on the edge of nose heavy, and
I could sympathize with Colin. My Synergy exhibits almost the same tendencies. It is not a heavy plane at 4.7 kg, but the CG is forward. Hmmmmmmm-you boys have me thinking again. I notice it biggest when travelling as every field I go to is at lower altitude. The biggest and costliest time was during the Trans Tasman comp in New Zealand-it was like flying through soup!</FONT></SPAN></DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff>I have always assumed it was an air density thing. I have experienced exactly what Colin describes.</FONT></SPAN></DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV> <DIV><SPAN class=573513321-11092006><FONT face="Comic Sans MS" color=#0000ff>Tom</FONT></SPAN></DIV> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>Dean Pappas<BR><B>Sent:</B> Tuesday, 12 September 2006 3:36 AM<BR><B>To:</B> NSRCA Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] Trimming question.<BR><BR></FONT></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>Hi Colin,</FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>By any chance, is your plane relatively heavy, have a particularly high wing loading, propped to fly very slowly, or set up relatively nose-heavy?</FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>The reason I ask is that back in the late eighties, I clipped the wings of one of my early Turnaround designs </FONT></SPAN><SPAN class=571581117-11092006><FONT face=Arial size=2>in order to fly faster.</FONT></SPAN></DIV> <DIV><SPAN
class=571581117-11092006><SPAN class=571581117-11092006><FONT face=Arial size=2>This was back when we were in the middle of a wild overcorrection from flying slow and small in this country to flying fast, fast, fast! Then things started to settle down.</FONT></SPAN></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>Actually, I clipped it twice, once from 68" span to 64" and then to 60. I should have left the plane at 64" span. When I made the second clip, the plane developed </FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>almost the same </FONT></SPAN><SPAN class=571581117-11092006><FONT face=Arial size=2>symptom you described. It pulled to the canopy in the vertical down line when the elevator was trimmed for a hot day.</FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>It also looked like it flew droopy-drawered (tail low) on hot days. I moved the CG back until the
elevators looked like they were in exactly the same spot, and lived with what little was left.</FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>There was no suitable electronic fix back then, with either a Futaba PCM 512 or a JR PCM9.</FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>My hypothesis is that the sensitivity to air density happens when the plane requires lots of "up" trim to fly. What do the elevators look like when trimmed on a hot day?</FONT></SPAN></DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=571581117-11092006><FONT face=Arial size=2>later,</FONT></SPAN></DIV> <div><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT face="Times New Roman">Kodeos Communications</FONT> <BR><FONT face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT face="Times New
Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT face="Times New Roman">d.pappas@kodeos.com</FONT> </div> <BLOCKQUOTE> <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>colin chariandy<BR><B>Sent:</B> Monday, September 11, 2006 9:53 AM<BR><B>To:</B> NSRCA Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] Trimming question.<BR><BR></FONT></DIV> <DIV>No, I'm using the MK bellcrank.</DIV> <DIV> </DIV> <DIV>If the problem was only related to the length of the pushrods, then when I re-trim the knife edge performance should return to normal. Thats not the case. The plane pushes to the bottom in the cold and is dead straight on hot days.</DIV> <DIV> </DIV>
<DIV>Colin.<BR><BR><B><I>Lance Van Nostrand <patterndude@comcast.net></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="MSHTML 6.00.2900.2963" name=GENERATOR> <STYLE></STYLE> <DIV><FONT face=Arial size=2>My guess is you have the deps system. carbon fiber does not have as much shrinkage as the rest of your plane.</FONT></DIV> <DIV><FONT face=Arial size=2>--Lance</FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=mailto:cchariandy@yahoo.ca href="mailto:cchariandy@yahoo.ca">colin chariandy</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A title=mailto:nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, September 10, 2006 11:09 PM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Trimming question.</DIV> <DIV><BR></DIV> <DIV>I noticed recently that I need to add a bit of down trim as the air temperature drops....maybe as much as 4 beebs going from 30+ days to 15C. That upsets the knife edge trim on the aircraft. </DIV> <DIV> </DIV> <DIV>Is that normal, or do I have something set a bit marginally, like CG or wing incidence?</DIV> <DIV> </DIV> <DIV>Do you guys typically have a "cold weather set-up" ?</DIV> <DIV> </DIV> <DIV>Colin.</DIV> <DIV> <HR SIZE=1> <A title=http://us.rd.yahoo.com/evt=40705/*http://mrd.mail.yahoo.com/try_beta?.intl=ca href="http://us.rd.yahoo.com/evt=40705/*http://mrd.mail.yahoo.com/try_beta?.intl=ca"><B>All new Yahoo! Mail - </B></A> <HR SIZE=1> Get a sneak peak at messages
with a handy reading pane. <DIV> <HR> <DIV></DIV>_______________________________________________<BR>NSRCA-discussion mailing list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</DIV></DIV></BLOCKQUOTE>_______________________________________________<BR>NSRCA-discussion mailing list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE><BR> <div> <HR SIZE=1> <A title=http://us.rd.yahoo.com/evt=40705/*http://mrd.mail.yahoo.com/try_beta?.intl=ca href="http://us.rd.yahoo.com/evt=40705/*http://mrd.mail.yahoo.com/try_beta?.intl=ca"><B>All new Yahoo! Mail </B></A> <HR SIZE=1> Get news delivered. Enjoy RSS feeds right on your Mail page.</BLOCKQUOTE> <TABLE> <TBODY> <TR> <TD bgColor=#ffffff><FONT color=#000000>************************************************************************<BR>*PLEASE NOTE* This email and any attachments may<BR>be confidential. If received in
error, please delete all <BR>copies and advise the sender. The reproduction or <BR>dissemination of this email or its attachments is <BR>prohibited without the consent of the sender.<BR><BR>WARNING RE VIRUSES: Our computer systems sweep<BR>outgoing email to guard against viruses, but no warranty <BR>is given that this email or its attachments are virus free. <BR>Before opening or using attachments, please check for <BR>viruses. Our liability is limited to the re-supply of any <BR>affected attachments.<BR><BR>Any views expressed in this message are those of the <BR>individual sender, except where the sender expressly,<BR>and with authority, states them to be the views of the <BR>organisation.<BR>************************************************************************<BR></FONT></TD></TR></TBODY></TABLE>_______________________________________________<BR>NSRCA-discussion mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE></DIV>_______________________________________________<BR>NSRCA-discussion mailing list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE><BR><p> 
<hr size=1><a href="http://us.rd.yahoo.com/evt=40705/*http://mrd.mail.yahoo.com/try_beta?.intl=ca"><b>All new Yahoo! Mail </b></a>
<hr size=1>Get news delivered. Enjoy RSS feeds right on your Mail page.