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<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Early this
season I swapped my Futaba 9102 coreless wing servos for 9150 digitals.<span
style="mso-spacerun: yes"> </span>As Gray mentions I first added more
expo to reestablish feel.<span style="mso-spacerun: yes"> </span>With
this added expo (mushiness) when doing points and slow rolls it was difficult
to maintain a consistent roll rate.<span style="mso-spacerun: yes">
</span>By decreasing travel volume (9ZAP AFR) in addition to reducing relative expo,
roll rate became more controllable and predictable. I sense there is a relative
amount of travel volume + expo needed to overcome surface blow back with
non-digitals to achieve desired mushiness.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Switching
to digital wing servos has greatly changed the rolling characteristics for me in
a positive way.<span style="mso-spacerun: yes"> </span>Rolls are crisper,
more predictable in all air speeds and stop-start with more authority.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Glen<o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><span class=EmailStyle15><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> Gray E Fowler
[mailto:gfowler@raytheon.com]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, July 31, 2003 3:04
PM<br>
<b><span style='font-weight:bold'>To:</span></b> discussion@nsrca.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: Servo question</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'><br>
</span></font><font size=2 color=black face=sans-serif><span style='font-size:
10.0pt;font-family:sans-serif;color:black'>What I noticed when switching to
digitals was the need to add more exponential. The coreless had a built in
mushiness around center. Now I program in the amount of mushiness I want. This
probably means that once you get used to a certain mushiness you would fly as
well with or with digitals.<br>
<br>
<br>
<br>
Gray Fowler<br>
Principal Chemical Engineer<br>
Composites Engineering</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>
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