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<DIV><FONT face=Arial size=2>Daniel,</FONT></DIV>
<DIV><FONT face=Arial
size=2> The
impact has two elevator servos, one in each stab half, lying on their sides. The
physical size of the opening in the stab halves may well dictate your choice of
servo. I prefer 8411's but they are too big. I may have to go with one servo and
head for a packet of creativity glue and a Sherline lathe (VBG)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Eric.</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=d77hamlett@comcast.net href="mailto:d77hamlett@comcast.net">Daniel J.
Hamlett</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> Saturday, January 08, 2005 2:24
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: elevator servo torque</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>If I am remembering correctly the Impact wants
130. oz" on the elv. I am building a Revolution Pro and that number
sticks out in my mind as what the plans called for on the elv. You can
check the composite arf web site. They have the instruction manuals
online, it will have the torque required, or at least recommended for each
surface.. Check out the link below.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><A
href="http://www.composite-arf.com/ar/Product?511000">http://www.composite-arf.com/ar/Product?511000</A></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>You should find everything that you need
here.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Another option that I did with the
Revolution. Installed a DS3421SA in each elv half. The servos
weigh .92oz each. Still lighter than 1 DS8411SA. Your control
linkage will be shorter as well, less weight there and it will be
stiffer. Over all I found that to be the simplest I could make
it.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Good luck.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dan</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=DaveL322@comcast.net href="mailto:DaveL322@comcast.net">David
Lockhart</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> Saturday, January 08, 2005 12:33
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: elevator servo
torque</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Wayne,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>The 9411sa would be fine. Swapping the
final output gear from metal to nylon with save almost a 1/2 oz total for 3
servos.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Run an unregulated 5cell pack (~1oz more
than a 4cell pack) and you will have about 20% more torque and speed.
Or, just bump up the output on your voltage regulator to 6.3v if going that
route.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV><FONT face=Arial size=2>
<DIV><BR>Dave Lockhart, Team JR</DIV>
<DIV><A href="mailto:DaveL322@comcast.net">DaveL322@comcast.net</A></DIV>
<DIV></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=falconhob@telus.net href="mailto:falconhob@telus.net">Wayne at
Bolly Props</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> Saturday, January 08, 2005
11:06 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> elevator servo torque</DIV>
<DIV><BR></DIV><!-- Converted from text/rtf format -->
<P align=left><SPAN lang=en-us><FONT face=Arial color=#000080 size=2>I’m
trying to figure out the amount of torque required for my elevator servo
(single, in a pull-pull system). I’m doing an electric Impact and
trying to save as much weight as I can. I’m considering either the
DS8411SA or the DS9411SA. Not sure if the 82 oz/in of the 9411 will
be enough? Savings of .7oz (every little bit helps) times 2 aileron
and one elevator servo makes it worth while.</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial color=#000080 size=2>There
used to be a site on the net that showed a way to calculate the required
torque, however I can’t find it.</FONT></SPAN></P>
<P align=left><SPAN lang=en-us><FONT face=Arial color=#000080 size=2>Any
first hand experience or good theories welcome!</FONT></SPAN></P>
<P align=left><SPAN lang=en-us></SPAN><A name=""><SPAN lang=en-us><FONT
face=Arial color=#000080 size=2>Wayne P.</FONT></SPAN></A><SPAN
lang=en-us></SPAN><SPAN lang=en-us></SPAN><SPAN lang=en-us></SPAN></P>
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