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<DIV>John:</DIV>
<DIV>It's really the Futaba stuff behind it causing the problem. This is
the 8311's way of trying to shake the receiver out of the airplane. </DIV>
<DIV> </DIV>
<DIV>Actually, loose cables can contribute to this. The mass of the rudder
has to be stopped with minimal overshoot. You have one cable tugging
at the rudder to bring it to neutral at some velocity. If the other cable
is a bit loose, the rudder will continue on a little bit and bang then to a stop
when the cable tightens more, essentially "plucking" the slightly loose cable
and causing a larger than normal response from the servo to correct the
error. This starts the oscillation. So it might be a combo of the
tight deadband and possibly loose cables doing it. Might be a bad pot too, but I
would start with the cable.</DIV>
<DIV> </DIV>
<DIV>Ed</DIV>
<BLOCKQUOTE
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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=mailto:jpavlick@idseng.com href="mailto:jpavlick@idseng.com">John
Pavlick</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 Discussion</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, April 26, 2007 8:09
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] JR servo
question</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Since I'm a Futaba user, I'll try to be nice
about this. <VBG> I have an airplane set up with JR servos and I'm
experiencing the classic "oscillating rudder" issue. There's a JR 8311 servo
on the rudder and the cables aren't excessively tight. I remember hearing
about this a while ago but I can't remember the solution. Any help would be
appreciated.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>John Pavlick<BR><A title=http://www.idseng.com/
href="http://www.idseng.com">http://www.idseng.com</A></FONT></DIV>
<P>
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