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<DIV><FONT face=Arial size=2>MOST Excellent, Keith. Rational,
understandable, and mathematically-proven. Thanks for sharing
that.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>BTW - my offset horns DO have "Ackerman", but one
side of ONE elev. half had 1/16" LESS Ackerman, and it was costing almost a
degree difference at full deflection.</FONT></DIV>
<DIV><BR>Bob Pastorello<BR>NSRCA 199 AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=tkeithb@comcast.net href="mailto:tkeithb@comcast.net">Keith Black</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, November 26, 2004 11:53
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Elev. Pull pull
Question</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>In addition to the height of the control horn we
must also considered where the control horn "pivot point" is in relation to
the hinge line, not where the control horn is physically located on the
control surface. In other words, your control horn has a hole where the clevis
connects to it. This clevis rotates in the control horn as it's pulled back
and forth. If this rotation point on one elevator half is at a different point
from the other elevator half then the throws will not bee the
same.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Here is an EXCELLENT article on what is know as
the Ackerman effect and how this applies to our pull-pull setups. For me,
understanding this was instrumental in getting a real grasp on pull-pull
systems.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><A
href="http://members.cox.net/bdfelice/Ackerman/ackerman.htm">http://members.cox.net/bdfelice/Ackerman/ackerman.htm</A></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=geobet@gis.net href="mailto:geobet@gis.net">George Kennie</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, November 26, 2004 11:21
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Elev. Pull pull
Question</DIV>
<DIV><BR></DIV>Bob, <BR>That sounds backward to me. If the bolt on the
further traveling half is further forward, then it should be going
over-center sooner generating less linear travel than the half on the other
side. My bet is on the inboard hinge slot not centered (low) on that side.
On mine I had some off center hinge slots. <BR>Georgie
<P>Daniel J. Hamlett wrote:
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<FONT face=Arial><FONT size=-1>Yes</FONT></FONT>
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<DIV style="FONT: 10pt arial">----- Original Message -----</DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob
Pastorello</A></DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, November 26, 2004
9:38 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Elev. Pull pull
Question</DIV> <FONT face=Arial><FONT size=-1>Yep. Same
distance OUT from surface. However, just checking things - again -
the elevator that is travelling too far also has the control takeoff
about 1/16" further FORWARD relative to the hinge line than the other
half.</FONT></FONT><FONT face=Arial><FONT size=-1>
Could this do it?</FONT></FONT>
<P>Bob Pastorello <BR>NSRCA 199 AMA 46373 <BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A> <BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A>
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<DIV style="FONT: 10pt arial">----- Original Message -----</DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=tph1@bellsouth.net href="mailto:tph1@bellsouth.net">Tom
Hinton</A></DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, November 26, 2004
8:07 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Elev. Pull pull
Question</DIV> <FONT face=Arial><FONT size=-1>Are both the horns
on the bottom the same distance from the surface, same amount of
threads?</FONT></FONT>
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<DIV style="FONT: 10pt arial">----- Original Message -----</DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob
Pastorello</A></DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">NSRCA</A></DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, November 26, 2004
8:58 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Elev. Pull pull
Question</DIV> <FONT face=Arial><FONT size=-1>May seem obvious,
but I could use some help here....setting up my Excelleron, centers
are okay, cable tensions are pretty close, centering is good.
Up elevator is fine, on Down elevator, ONE elevator moves farther,
but they track together except at the endpoint, as close as I can
tell.</FONT></FONT> <FONT face=Arial><FONT size=-1>Anyone have
suggestions on how I'd fine tune this out...??</FONT></FONT><FONT
face=Arial><FONT size=-1>Hope everyone had a great
T-day!!</FONT></FONT>
<P><FONT face=Arial><FONT size=-1>Bob Pastorello</FONT></FONT>
<BR><FONT face=Arial><FONT size=-1>NSRCA 199 AMA
46373</FONT></FONT> <BR><FONT face=Arial><FONT size=-1><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A></FONT></FONT>
<BR><FONT face=Arial><FONT size=-1><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></FONT></FONT><FONT
face=Arial><FONT
size=-1> </FONT></FONT> </P></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE>
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