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<DIV><FONT face=Arial size=2>Regarding placing servos in the stab, the location
I was planning on placing my RX (just behind the wing tube) would require about
44 inches of servo extension between the RX and each stab servo. What
problems/risks does it present in having extensions this long? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The only extensions longer than 36" that my local
hobby shop sells are 48", but these have a built in filter. I really don't want
to use a filter unless absolutely necessary, it will add weight. Is it really
necessary to filter runs longer than 36"? What other considerations should be
made with long runs?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any input would be appreciated.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV><FONT face=Arial size=2>Keith</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=jrmmorton@earthlink.net
href="mailto:jrmmorton@earthlink.net">Morton</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> Friday, March 21, 2003 11:35
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Dual Elevator Servos</DIV>
<DIV><BR></DIV>Keith,<BR><BR>I have been very happy with 2 digital
programmable MCV2 micro servos mounted on their sides inside the stab of my
Viper 202. I originally had the MCV2 superflat (11 mm) servos which worked
fine, but I liked the quicker speed and power of the micros, and they
were still only about 1 oz each. I like the short positive nearly frictionless
connection to each elevator half (MK ball bearing clevis). They have held up
very well and I had no problem matching the throws. I didn't even use the
programming feature, I just plugged each servo into a different channel and
mechanically matched them as close as possible. One possible advantage could
be that you could have each servo work independently with ailerons if you
wanted to. I do that on my fun fly plane and it works great (I am thinking for
a multi-purpose AA plane).<BR>I mount the servos on their sides to a light ply
and balsa sandwiched rectangular plate. I use the outer balsa layer to exactly
match the curve of the airfoil. I then cut a hollow plywood rectangle that
will support the servo in the stab. The width of the plywood rectangle
(donut) is such that 1/2 will be under the balsa stab sheeting and 1/2
is used to support the servo plate, the center is cut out for the servo. I
then use a router to create a box for the servo and mounting plate into the
foam core before sheeting in the stab. Glue in the plywood rectangle and sheet
the stab normally. I then drill a hole in each corner to attach the servo
plate. I later added an access hatch in the bottom of the fuselage to
help fish the servo wires and extensions. Send me a message and I will e-mail
pictures if you like.<BR><BR>Ray Morton<BR><BR>Keith Black wrote:<BR>
<BLOCKQUOTE type="cite"><PRE wrap="">putting servos in the stab halves
</PRE></BLOCKQUOTE><PRE wrap=""><!---->
This is exactly what I had initially considered on my Aries so my removable
stab would be easier to remove. Essentially they would be like small main
wings.
However all the feedback that I received seemed to indicate that this was a
bad idea due to extra weight, possible differences in throw over time, etc.
I'd like to hear pros and cons from others that use used this technique.
Thanks,
Keith</PRE></BLOCKQUOTE></BODY></HTML>