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<DIV><FONT face=Arial color=#0000ff size=2>Hi Gray. </FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2> </FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2>I now fly Stylus and when I used to
Fly Kraft had a similar case where elevator functioned was weak or none and
ailerons and throttle did work but very sluggish. Plane kinda controlled crashed
as I had enough juice after no other input as it crossed threshold to effect a
slight flair. Airborne had 1 dead and 1 weak cell of 4 cell pack. Granted
was FM modulation. Was told the assignment in receiver was elevator was after
other servos thus why it appeared other servos were working when elev only
barely worked at threshold. So I would have to guess batteries from what I
have experienced. </FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2> </FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2> Del </FONT></DIV>
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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 title=gfowler@raytheon.com href="mailto:gfowler@raytheon.com">Gray E
Fowler</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 02, 2008 10:01
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Ideas on
radio beserkness-cause of crash??</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>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></FONT><BR><FONT face=sans-serif size=2><BR><BR><BR>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 face=sans-serif size=1><B><A
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A></B>
</FONT><BR><FONT face=sans-serif size=1>Sent by:
nsrca-discussion-bounces@lists.nsrca.org</FONT>
<P><FONT face=sans-serif size=1>09/02/2008 08:44 AM</FONT>
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<DIV align=center><FONT face=sans-serif size=1>Please respond
to<BR>General pattern discussion
<nsrca-discussion@lists.nsrca.org></FONT></DIV></TR></TBODY></TABLE><BR></P>
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<DIV align=right><FONT face=sans-serif size=1>To</FONT></DIV>
<TD><FONT face=sans-serif size=1>General pattern discussion
<nsrca-discussion@lists.nsrca.org></FONT>
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<TD>
<DIV align=right><FONT face=sans-serif size=1>cc</FONT></DIV>
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<DIV align=right><FONT face=sans-serif size=1>Subject</FONT></DIV>
<TD><FONT face=sans-serif size=1>Re: [NSRCA-discussion] Ideas on
radio beserkness-cause of crash??</FONT></TR></TBODY></TABLE><BR>
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<TD></TR></TBODY></TABLE><BR></TR></TBODY></TABLE><BR><BR><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 face=sans-serif
size=2><BR>Guys</FONT><FONT size=3> <BR></FONT><FONT face=sans-serif
size=2><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> <BR><BR></FONT><FONT
face=sans-serif size=2><BR>Plane was new had about 10 flights on
it.</FONT><FONT size=3> <BR></FONT><FONT face=sans-serif size=2><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 face=sans-serif size=2><BR>New
switch</FONT><FONT size=3> </FONT><FONT face=sans-serif
size=2><BR>Transmitter-1999 Stylus, never been serviced, never had
problems</FONT><FONT size=3> <BR></FONT><FONT face=sans-serif
size=2><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 face=sans-serif size=2><BR>Thanks
guys....<BR><BR><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>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</FONT></TT>
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