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<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=580554102-27012005>Ed,</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=580554102-27012005> Don't think about inverted / upright / right /
left like that. It's all the same to the airplane. Upright the slip stream hits
the left side of the fin causing Left yaw. For sake of argument: Right thrust
will be used to counteract this. Inverted, the SAME THING happens. Don't think
right / left in reference to YOU, think left / right in reference to the
AIRPLANE. When inverted the slip stream hits the left side (still) of the fin -
unless the motor suddenly starts turning the opposite way. Same thrust offset
("Right") required unless the slip stream goes away in a push. Now if there's
right thrust, you need left rudder to offset the right thrust which is trying to
make the airplane yaw right in the absence of the slip stream air on the
fin. If you still want to think about it the "other" way, remember "left"
rudder when inverted will make the plane yaw to the "right" (in reference to YOU
standing there watching the plane). Now I'm getting
confused.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=580554102-27012005> If you think about what Chip described: Trim for
straight flight at full throttle, mix left at idle. Another way would be trim
straight at idle, mix right at full throttle. That's what I've been doing. Same
difference. </SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=580554102-27012005>
<P><FONT size=2>John Pavlick<BR><A href="http://www.idseng.com/"
target=_blank>http://www.idseng.com</A><BR> </FONT>
</P></SPAN></FONT></DIV>
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style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">
<DIV align=left class=OutlookMessageHeader dir=ltr><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Edward
Skorepa<BR><B>Sent:</B> Wednesday, January 26, 2005 8:15 PM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Re: Throt/ Rud<BR><BR></DIV></FONT>
<DIV><FONT face=Arial size=2>I'm confused too. I know, I know I shouldn't
argue with someone like chip but I believe the main reason we're putting right
thrust is an asymmetric vertical fin. On most conventional airplanes the area
above thrust line is much greater then area below. So, the spiraling slip
stream will hit the top portion of the vertical fin from the left
pushing tail to the right thus right thrust. When inverted, the spiraling slip
stream will hit vertical fin from the right because fin is now on the
opposite side and pushes tail to the left. To straighten the flight
path, we need now the left thrust which is already there. During inverted push
ups, why do we need to use left rudder? The spiraling slip stream misses
completely vertical fin and the right (left when inverted) thrust is causing
airplane to yaw left. If you have a big gasser, turn on smoke, do inverted
push up and watch where the smoke goes. However, Chip's approach of
fixing the inverted push ups problem is quite interesting and I'll try it on
my new bird I'm working on right now.</FONT></DIV>
<DIV><FONT face=Arial size=2>ed</FONT></DIV>
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style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:natpenton@centurytel.net" title=natpenton@centurytel.net>Nat
Penton</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
href="mailto:discussion@nsrca.org"
title=discussion@nsrca.org>discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, January 26, 2005 11:32
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Throt/ Rud</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Cameron Smith relayed comments from Chip ( from
RCU ) relating to how he uses a mix to eliminate the need for right thrust.
I know Chip knows but he left me confused. Could someone clarify what he
said?</FONT></DIV>
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