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Hi Keith:
<br> Had the
same problem when I started flying my first Nova 2+2.
<br> I ask
the JR rep. at Toledo, and he claimed he used extensions up to 60" with
no filter. Up to that point I was having the extra long extensions made
special.
<br> The one
thing you do have to do, regardless, is twist the wires, or you'll loose
range. An easy way to do this is, clamp one end on your bench, and twist
the other. ( approx. 1 turn, per 3". ) Clamp the other end, and run a heat
gun over it to set the twists.
<br>
Have a buddy who's very particular and neat, who was having trouble with
range in his first 30% ??????. Checked his ext., and sure enough, straight
as an arrow down the inside of the fuse. Took them out ,twisted them, and
he went flying. ( something I would like to do right now, but we got 5"
of the white stuff last night.)
<br>
Hope this helps, Gord
<p>Keith Black wrote:
<blockquote TYPE=CITE><style></style>
<font face="Arial"><font size=-1>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></font> <font face="Arial"><font size=-1>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></font> <font face="Arial"><font size=-1>Any input would
be appreciated.</font></font> <font face="Arial"><font size=-1>Thanks,</font></font><font face="Arial"><font size=-1>Keith</font></font>
<blockquote dir=ltr
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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 href="mailto:jrmmorton@earthlink.net" title="jrmmorton@earthlink.net">Morton</a></div>
<div style="FONT: 10pt arial"><b>To:</b> <a href="mailto:discussion@nsrca.org" title="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>
Keith,
<p>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.
<p>Ray Morton
<p>Keith Black wrote:
<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>
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