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I don't think I would have flown it without changing the servo :) Not
that brave.<br>
Stu<br>
<br>
chris moon wrote:
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</style>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>
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