<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2900.2769" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Paul,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>as mentioned above expo is Negative to soften the
middle on Futaba and Positive on JR...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Since you said it is speed sensitive....What
servos? It could be a case of not enough servo...When you at full power
the ailerons are not as effective so they could be blowing back. Also look at
the aileron linkage. If you have a slightly marginal servo but a poor mechanical
advantage on the linkage it will act the same way. You would then be playing
with expo to get the full power roll rate (which is experiencing blow back)
setup and the result is when the surface is not under as much load your expo is
not high enough.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>To know for sure about servo need the following
answers.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What servo? Torque? Digital? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>When was the pot last serviced (number of
flights)?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What is your ATV (travel adjust set at for each
aileron servo? (100%? 70%? 138%) give me both ends of each servo.</FONT></DIV>
<DIV><FONT face=Arial size=2>What deflection do you have when on "high rate at
100%" Need Right aileron up and down, left aileron up and down. If
your High rate is less than 100% what is it?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What is your dual rate value you are actually
flying on (70%)</FONT></DIV>
<DIV><FONT face=Arial size=2>What deflection are you flying with as your dual
rate or low rate? Again right aileron up and down, and left aileron up and
down.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What is your expo value (45%, -45% ect....)
Also what radio are you using?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Once we get these numbers we can determine where to
go. This may lead us down another path where we Might need some more
numbers like:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Distance from hinge line to the aileron horn clevis
pivot point?</FONT></DIV>
<DIV><FONT face=Arial size=2>Distance from Servo wheel connection point to the
center of the servo wheel?</FONT></DIV>
<DIV><FONT face=Arial size=2>Differential setting in the radio?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Get back with me and we can help you out...There
are lots of things that can have an effect...but Making sure the linkage is good
is the first step. Once we confirm it has a good linkage whether that means we
change it up a bit or it is already as good as it can be we'll look into other
things. Sometimes a non-straight hinge line meaning aerodynamically curved can
make the ailerons speed sensitive. CG can sometimes make this happen too. Maybe
something is flexing in the model when it is under high power conditions....like
a wing adjuster/anti rotation pin. Maybe there is some loose covering or a
damaged shape to the airfoil like the covering iron got hot and melted the foam
below the balsa skin....</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So many things to look at that we need to start
somewhere. Since the ailerons are the effected culprit lets start with their
linkage and radio setup.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Troy Newman</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
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=paul.horan@sbcglobal.net
href="mailto:paul.horan@sbcglobal.net">paul</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> Sunday, December 04, 2005 4:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Excess Aileron sensitivity
around neutral</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2> I have a Meridian with a
frustrating characteristic, the ailerons are excessively sensitive around
neutral.</FONT></DIV>
<DIV><FONT face=Arial size=2>I'm the second owner of this plane but the first
owner said he had the same problem. Aileron authority at full throttle
is not excessive - in fact it slightly on the mild side.
</FONT></DIV>
<DIV><FONT face=Arial size=2>Any ideas ?</FONT></DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV><FONT face=Arial size=2>Paul</FONT></DIV>
<DIV><FONT face=Arial size=2>NSRCA 3606</FONT></DIV></BLOCKQUOTE></BODY></HTML>