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Hi Ed:<br>
That was my first thought that I activated or changed some mixing, but
I could not find any difference by moving switches and went in and
checked all of my mix settings. I think now that it must have been
bumped or jarred somehow to change the pot setting or else cause some
mechanical change in the pressed together parts. I just assumed though
that if you hit the elevator hard enough, the first thing to fail would
be one of the tiny plastic servo gear teeth but that might not be
true. Anyways, the servo is on its way to Horizon now and I hope they
can find and report what is out of tolerance with the servo now.<br>
<br>
Chris<br>
<br>
Ed Alt wrote:
<blockquote cite="mid:BAY135-W269EBC7EF4144882A4F617E89A0@phx.gbl"
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</style>Chris:<br>
Any chance that you didn't disable the lever/knob/switch associated
with the aux channel that you mix the elevator into for the 2nd
elevator servo?<br>
<br>
Ed<br>
<br>
<br>
<br>
<br>
<hr id="EC_stopSpelling">
<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:cjm767driver@hotmail.com">cjm767driver@hotmail.com</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br>
Date: Sat, 5 Jul 2008 12:47:55 -0500<br>
Subject: [NSRCA-discussion] Servo question<br>
<br>
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Ok, here is a brain teaser for you experts.<br>
<br>
On Sunday 2 weeks ago I went out flying maybe 4-5 flights. All was <br>
fine. When I got to the flying site on Friday for the Lake City <br>
contest, I made a practice flight and the plane was climbing like mad. <br>
I got it down and found that 1 of the elevator halves was about 3/8" up
<br>
from the other. Before the flight, I checked the operation of the <br>
elevators and they were moving correctly but I don't remember <br>
specifically if I paid any attention to if they were centered <br>
perfectly. Now, nothing was changed between the the last time I flew <br>
and this flight. The transmitter was on the right model. The linkage <br>
had not slipped, nor had the control horn bent. The control surface <br>
showed no sign of trauma from a severe bump possibly causing a stripped
<br>
gear. The servo (JR 3421sa) was functioning 100% normally it was just <br>
the center had changed on it's own. I removed the servo arm (alum - not
<br>
stripped either) and moved it one spline and adjusted the sub trim <br>
slightly and flew a few test flights and the contest with no problems. <br>
Now at home, I removed the servo to send it back and inspected it and <br>
found nothing abnormal. The gears all look fine. Here is what I have <br>
eliminated:<br>
<br>
servo arm - not stripped<br>
servo gears - not stripped<br>
pushrod and linkage - no play and not slipped on the clevis threads<br>
transmitter - correct model selected and could not be elevator pot in <br>
transmitter since it did not affect the other elevator servo's centering<br>
<br>
I am sending it back for a check up but just was wondering if anyone
has <br>
had any similar experience ever or if they have any possible causes.<br>
<br>
Thanks<br>
<br>
Chris<br>
<br>
<br>
<br>
<br>
<br>
<br>
<hr>
<br>
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