<br><font size=2 face="sans-serif">Tx battery totally fine 10.3 volts at
crash...new pack was cycled and tested. I do not understand a low battery
failure...From what I have seen with batteries either you got it or you
do not. <br>
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Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radomes and Specialty Apertures<br>
Technical Staff Composites Engineering<br>
Raytheon</font>
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<td width=40%><font size=1 face="sans-serif"><b>vicenterc@comcast.net</b>
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<br><font size=1 face="sans-serif">Sent by: nsrca-discussion-bounces@lists.nsrca.org</font>
<p><font size=1 face="sans-serif">09/02/2008 08:44 AM</font>
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<div align=center><font size=1 face="sans-serif">Please respond to<br>
General pattern discussion <nsrca-discussion@lists.nsrca.org></font></div></table>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">General pattern discussion <nsrca-discussion@lists.nsrca.org></font>
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<div align=right><font size=1 face="sans-serif">cc</font></div>
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<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">Re: [NSRCA-discussion] Ideas on radio
beserkness-cause of crash??</font></table>
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<br><font size=3>Gray,</font>
<br><font size=3> </font>
<br><font size=3>Sorry about your lost. It think the biggest chance
of failure were those parts that were new. I think there is a good
chance that you have infant battery failure. I know that the chances
are low but it could happen. I assume tha you checked the TX battery
and it is OK. </font>
<br><font size=3> </font>
<br><font size=3>--<br>
Vicente "Vince" Bortone</font>
<br><font size=3> </font>
<br><font size=3>-------------- Original message -------------- <br>
From: Gray E Fowler <gfowler@raytheon.com> <br>
</font><font size=2 face="sans-serif"><br>
Guys</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Yesterday on my 4th flight of the day my PCM Stylus went nuts. PCM program
was set for idle throttle and about 5-6 clicks(trim wise) of up elevator-all
other surfaces neutral, and this was tested as such by turning off the
transmitter. As I passed by center I noticed that I could not gain
altitude and the the throttle started going from idle to high...then ailerons
started oscillating small left-right deflections. I cut the throttle to
the kill position but the engine persisted up-down bursts. I was able to
do a 180 degree turn with aileron coming back to center...never losing
altitude, but unable to change the altitude,elevator seemed unresponsive.
As I passed by center again I was losing more and mo re con trol. The plane
flew over the wooded area south of the field at about 200 feet high, I
could not turn and the ailerons rolled the plane upside down and it went
straight down into the trees. This whole episode last about 45 seconds.
Cannot find the plane, and remnants of Gustav are headed my way.</font><font size=3>
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Plane was new had about 10 flights on it.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
New battery..NiMH 5 cell pack -no regulator (ran 5 cell packs for years,
no regulator) <br>
Reciever-1999 Stylus PCM-never crashed, wrapped in foam</font><font size=3>
</font><font size=2 face="sans-serif"><br>
New switch</font><font size=3> </font><font size=2 face="sans-serif"><br>
Transmitter-1999 Stylus, never been serviced, never had problems</font><font size=3>
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</font><font size=2 face="sans-serif"><b><br>
What would cause a PCM receiver to do such a thing?</b> If I had and intermittent
signal, once the receiver did get a signal the only two throttle signals
should have been i dle (P CM hold) and off (transmitter). I am going
to send the transmitter in just to get checked.</font><font size=3> <br>
</font><font size=2 face="sans-serif"><br>
Thanks guys....<br>
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<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radomes and Specialty Apertures<br>
Technical Staff Composites Engineering<br>
Raytheon</font><font size=3> </font><tt><font size=2>_______________________________________________<br>
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NSRCA-discussion@lists.nsrca.org<br>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</font></tt>
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