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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>As I read the literature, the dual battery
setup is designed to provide a heavier buss for more current. It does not solve
the problem of a failed battery(s). This could effectively add even more drain.
The ideal setup still seems to be dual battery packs with dual regulators, or
some other means to isolate a failed pack.</span></font></p>
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<p><b><i><font size=4 color=navy face="Brush Script MT"><span style='font-size:
13.5pt;font-family:"Brush Script MT";color:navy;font-weight:bold;font-style:
italic'>Jay </span></font></i></b><b><i><font size=4 color=navy
face="Brush Script MT"><span style='font-size:13.5pt;font-family:"Brush Script MT";
color:navy;font-weight:bold;font-style:italic'>Marshall</span></font></i></b><font
color=navy><span style='color:navy'> </span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> </span></font><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>nsrca-discussion-bounces@lists.nsrca.org</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> [mailto:</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>nsrca-discussion-bounces@lists.nsrca.org</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>] <b><span
style='font-weight:bold'>On Behalf Of </span></b>vicenterc@comcast.net<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, September 03,
2008 11:44 AM<br>
<b><span style='font-weight:bold'>To:</span></b> </span></font><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>General pattern
discussion</span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
Part 2-Its a miracle!!!</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Gray,</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Yes, high drain could have been the problem.
Since the plane is in good condition probably you can check. I think you
should consider using two batteries of your preference. I starting to use
the 9100 receiver that already has two power inputs. Check details here:</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><a
href="http://www.horizonhobby.com/Products/Default.aspx?ProdID=SPMAR9100">http://www.horizonhobby.com/Products/Default.aspx?ProdID=SPMAR9100</a></span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>--<br>
Vicente "Vince" Bortone</span></font></p>
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<blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0in 0in 0in 3.0pt;
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<p class=MsoNormal style='margin-right:0in;margin-bottom:12.0pt;margin-left:
.5in'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>--------------
Original message -------------- <br>
From: Gray E Fowler <gfowler@raytheon.com> <br>
<br>
</span></font><font size=2 face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif'>Vicente</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>The
Robbe charger has a setting for soft peak, which is to be used for NiMH. This
is what I had. I cycled twice before using this new battery..what I remember
was getting about 1300 Mah from this 1450 mah pack. I think there may be a
"high drain" problem on the plane in addition.</span></font> <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
<br>
<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radomes and Specialty Apertures<br>
Technical Staff Composites Engineering<br>
Raytheon</span></font> <br>
<br>
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<p class=MsoNormal><b><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif;font-weight:bold'>vicenterc@comcast.net</span></font></b><font
size=1 face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif'> </span></font><br>
<font size=1 face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif'>Sent
by: nsrca-discussion-bounces@lists.nsrca.org</span></font> </p>
<p><font size=1 face=sans-serif><span style='font-size:7.5pt;font-family:
sans-serif'>09/03/2008 09:42 AM</span></font> </p>
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<p class=MsoNormal align=center style='text-align:center'><font size=1
face=sans-serif><span style='font-size:7.5pt;font-family:sans-serif'>Please
respond to<br>
General pattern discussion <nsrca-discussion@lists.nsrca.org></span></font></p>
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<p class=MsoNormal><font size=1 face=sans-serif><span style='font-size:
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<p class=MsoNormal><font size=1 face=sans-serif><span style='font-size:
7.5pt;font-family:sans-serif'>Re: [NSRCA-discussion] Part 2-Its a
miracle!!!</span></font></p>
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<br>
<br>
Gray, <br>
<br>
Yes, that is good news. Clearly the battery was the problem. I had
heard that some chargers get a "false peak" and stop charging when
the battery is not really fully charged. I wonder if this was the
problem. <br>
<br>
--<br>
Vicente "Vince" Bortone <br>
<br>
-------------- Original message -------------- <br>
From: Gray E Fowler <gfowler@raytheon.com> <br>
</span></font><font size=2 face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif'><br>
Lance and I went out and found the plane right where it was supposed to be. Do
not know how I missed it the first day, so I am going to say that someone went
into the woods Monday night and moved it .</span></font> <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
What is amazing in the minimal damage the plane has considering it went
straig ht in from 200 feet, albeit at a slow speed. The horrible reverbed
cracking sound Keith and I heard was the carbon fiber wing tube breaking. Both
wings have limited leading edge damage, the stab has a golfball size divot on
the R LE, an easy to repair crack in the fuse (buckle failure) behind one wing
and a little nose ring area damage. That is all.</span></font> <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
The battery pack had broken the 3/8 bals a stic ks on impact that were bonded
into place (my battery packs are not "removeable" per say) and the
battey pack was on the ground at the nose of the plane. The plane was standing
vertical on the undamage spinner being held up by the tree branches. Once
we got home we hooked eveything up and of course it all worked fine. Knowing
that the battery pack essentially had the same charge as when the plane went
in, Lance took the battery pack home for diagnostics. Using the Robbe
charger he cycled the1450 mah &nbs p;pack down....it read 80 mah. He then
charged it and it read 1000 mah. Anthony described a NiMH "brown out"
and that is starting to make alot of sense. 6 volt packNiMH , drained
does not just die like a 4.8 volt NiCad. Also an important note is I now think
the plane was going in and out of PCM lock. When I tested PCM lock the throttle
did cut, but not to low idle. It cut to about 20% throttle (programming error),
hence the pulsing of the throttle that I exper ienced. If this diagnosis is
correct then it is a testament to using PCM as I was able to fly the plane for 45
seconds before impact...had I been closer when the problem started I may have
even been able to score a "10" FAI landing (not really-I would have
gone for the grass instead of the runway).</span></font> <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
Anyway I am sending the entire radio off for examination, try to see why the
battery was so low, and fix the plane for spring.</span></font> <br>
<br>
<FO NT fac e=sans-serif size=2>Thanks for the ideas <br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
</span></font><br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'><br>
<br>
<br>
<br>
Gray Fowler<br>
Senior Principal Chemical Engineer<br>
Radomes and Specialty Apertures<br>
Technical Staff Composites Engineering<br>
Raytheon</span></font> <tt><font size=2 face="Courier New"><span
style='font-size:10.0pt'>_______________________________________________</span></font></tt><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><br>
<tt><font face="Courier New">NSRCA-discussion mailing list</font></tt><br>
<tt><font face="Courier New">NSRCA-discussion@lists.nsrca.org</font></tt><br>
<tt><font face="Courier New">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</font></tt></span></font>
<br>
<br>
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