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<DIV><FONT face=Arial size=2>How much offset could an offset have if an offset
had no Ackerman?</FONT></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=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 12:28
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Elev. Pull pull
Question</DIV>
<DIV><BR></DIV>
<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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