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<DIV><FONT face=Arial size=2>Eric:</FONT></DIV>
<DIV><FONT face=Arial size=2>Yeah, it could be alright in that
application. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ed</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=pattern4u@comcast.net href="mailto:pattern4u@comcast.net">Grow
Pattern</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, February 13, 2006 1:43
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Direct
Servo Drive</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Ed,</FONT></DIV>
<DIV><FONT face=Arial size=2> The 3-D throw
set-up's could benefit from this 1-1 hook-up. I have seen some
pretty extreme R,E and A throws used in that type of flying.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Apart from the aesthetics, there is the question
of how many of them would you fit to a control surface and the weight of the
apparatus?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I have done 1-1 servo connection on racing
gliders with all moving wings. It was crap. Needed very small movements of the
wing and the best possible resolution available. The 15 degree aileron set-up
would need a very tight servo indeed.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>E.</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=johnferrell@earthlink.net
href="mailto:johnferrell@earthlink.net">John Ferrell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, February 13, 2006 1:30
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Direct
Servo Drive</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>If that can be worthy of a patent, the inmates
are in charge of the asylum!</FONT></DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></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=bob@toprudder.com href="mailto:bob@toprudder.com">Bob
Richards</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, February 13, 2006 9:08
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Direct Servo Drive</DIV>
<DIV><BR></DIV>
<DIV>My feeling exactly.</DIV>
<DIV> </DIV>
<DIV>Bob R.</DIV>
<DIV><BR><BR><B><I>Ed Alt <<A
href="mailto:ed_alt@hotmail.com">ed_alt@hotmail.com</A>></I></B>
wrote:</DIV>
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<DIV><FONT face=Arial size=2>Never have seen it before, but I guess the
main question I have concerns the potential for loss of effective torque
transmitted to the control surface. I see that they claim it's
better due to no losses. That would be true in the sense that you
don't lose that little bit in the linkage friction etc., but if you only
want, say, 25 degrees of surface throw each direction, it would appear
that you would have to limit the servo travel to 25 degrees as
well. If that's true, then you have less mechanical advantage for
a given degree of movement for the surface, since you would normally
have a servo traveling about doub! le that distance. The control
surface speed would be quicker, assuming the load is handled without any
blowback or slowdown of movement due to the effectively lower torque
transmitted while moving. Maybe I'm not seeing it right, but it
looks like it might not be such a good thing to use, unless you were
already planning on having something close to a 1:1 correspondence of
degrees of servo arm movement to degrees of surface travel.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ed</FONT></DIV>
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