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<DIV><FONT face=Arial color=#0000ff size=4>How old are the NiMh batteries...
People have found the have a steep drop off when going bad..</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=4></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=4>scott</FONT></DIV>
<BLOCKQUOTE
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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=vicenterc@comcast.net
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> ; <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=fhhuber@clearwire.com
href="mailto:fhhuber@clearwire.com">Fred Huber</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 06, 2006 10:19
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Lost
Abbra</DIV>
<DIV><BR></DIV>
<DIV>Fred,</DIV>
<DIV> </DIV>
<DIV>Usually I called pilot (and/or mechanic) error until I find the cause of
the crash. I haven't been in this position in a very long
time. I tend to agree with you since it was clear that I didn't have
control. However, the radio is working even after such a
crash. There was a comment at the field that NiMh batteries
can cause this problem. I will check the battery as much as
possible (cycle increasing the current draws) but not sure if
the test will be valid.</DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV> </DIV>
<DIV>Vicente "Vince" Bortone </DIV>
<DIV> </DIV>
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Original message -------------- <BR>From: "Fred Huber"
<fhhuber@clearwire.com> <BR>
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<DIV><FONT size=2>In that case... it may have gone to lock out just as it
was finishing the snap... rather than your control input to get out of the
rotation, the surfaces go to neutral, it over-rotates and then plays lawn
dart.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>No response at all its very easy to thing failsafe
lockout. Since the engine was already at the failsafe setting,
you don't have that indicator to confirm (or refute) the
lockout.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>I wouldn't call it pilot error when the control input
attempts you made simply had no effect...</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=vicenterc@comcast.net
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 06, 2006 7:15
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Lost
Abbra</DIV>
<DIV><BR></DIV>
<DIV>I am wrong below in regard the fail safe in regard the fail
safe. The fail safe is programmed to cut the engine and set the
control surfaces at neutral. </DIV>
<DIV> </DIV>
<DIV>Vicente "Vince" Bortone</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: <A
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A> <BR>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Yes, yesterday afternoon
I lost my Abbra. I was doing the 45 degree down with
snap. After the snap, I could not control the plane. This is
my recollection of events:<o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"> <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">1. I over rotated the
snap for a kittle more than 90 degrees. It was clear to me at
that early stage that something was going wrong. I snapped to the
right. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">2. My friend Charlie was
calling for me. He also noticed and said something to put it
back in position. I told him that the plane was not
responding. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">3. First reaction was to
give full left to get it back upright. The ailerons did not
respond. When I realized that, I tried to take it out of the dive
by given down elevator since was pracically in inverted position.
It did not respond. It that aptitude everything goes very
fast. Finally, I tried to give up elevator but was already too
late. I am aware that I applied these control input. <SPAN
style="mso-spacerun: yes"> </SPAN>It was clear to me that there was
no reaction. <SPAN style="mso-spacerun: yes"> </SPAN>I was able to
realize that I didn't have control and I could not avoid the
crash. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">4. I did not have time to
do anything with rudder and throttle. Throttle was at idle.
<o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">5. When we checked the
crash site. One aileron servo was buzzing hard. I disconnected the
servo. Therefore, my first impression that the battery flew off
and it got disconnected with the force of the snap was not
valid.<o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">6. I took the plane home
as it came from the crash.<SPAN style="mso-spacerun: yes">
</SPAN>I disconnected only the ailerons servos. <SPAN
style="mso-spacerun: yes"> </SPAN>I checked the radio and
everything is working fine. Only two servos are not working.
The throttle servo that was practically destroyed in the crash and one
aileron servo that the gears were stripped.<SPAN
style="mso-spacerun: yes"> </SPAN>I believe that this was caused
by the force of the impact. <SPAN
style="mso-spacerun: yes"> </SPAN>There was not evidence of flutter
in the ailerons before the crash or structural damage after coming out
of the snap.</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">7.<SPAN
style="mso-spacerun: yes"> </SPAN>I believe that the plane was
well over stall speed after the snap. <SPAN
style="mso-spacerun: yes"> </SPAN>Therefore, the plane was not in
stalled condition.<SPAN style="mso-spacerun: yes"> </SPAN>However,
I could be wrong.<o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">7. I use JR all
around with digital servos. PCM receiver with fail safe programmed
to cut engine and leave the servos in the last commanded position.
<o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">8. I use 2300 mah NiMh
battery (4 cells AA Sanyo). I checked the battery voltage and was
at 5.15 volts after the crash. Discharged the battery and gave
1540 mah using 250mah rate. I am planning to cycle the battery
with higher loads. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">9. It was very hot
day. The plane was sitting in the sun and it was second fly of the
day around 2:00 PM. Easily was close to 100 oF. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"> <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">At this point, I have to
admit that has to be pilot error since I have not been able to find a
definitive cause of the crash. It is clear that the snap initiated
some kind of failure. Other pilots think that the NiMh battery
gave up at high currents during the snap and caused the crash. I
have been flying this type of battery for two years now with no
problems. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"> <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">I am informing this to
the group since I would like to have your feedback. <SPAN
style="mso-spacerun: yes"> </SPAN>If someone had a similar problem
and found the cause of the crash, please let me know. I am going
back to my backup plane (the old hydeout). I have a brand new
Abbra so need to put it together. <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"> <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Thanks and have a nice
day,<o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"> <o:p></o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Vicente
Bortone<o:p></o:p></P></DIV></BLOCKQUOTE>
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