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<p class=MsoNormal><font size=2 color=navy face=Arial id="role_document"><span
style='font-size:10.0pt;font-family:Arial;color:navy'>“Wiping”
contacts are always preferred…</span></font></p>
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10.0pt;font-family:Arial;color:navy'> </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
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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>AtwoodDon@aol.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, February 09, 2009
11:33 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
nsrca-discussion@lists.nsrca.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
Arming Plug/Receptacle Problem</span></font></p>
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style='font-size:12.0pt'> </span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Ron,
you are right that the Dean's connectors are less prone to loosing contact due
to wear because of the way the contacts work. The tips of the plug may
wear due to spark, but the mating surfaces do not. I have hundreds of
flights using my Deans arming plug with no issues. Tips show errosion due
to sparks but the mating surfaces show none of the erossion.</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>The is
supposedly a way to allow the capacitors of the ESC to charge slowly by using a
resistor in the circuit to pass current more slowly to charge the
capacitors. I have not done this but if you do a search in RCU or RCG,
you will probably find the info. I have also heard there is a
recommendation to not do this because the ESC may power up with less than
minimum required voltage and the logic may not work correctly. Like I
said, I have not done this, just passing on what I have heard.</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Don</span></font></p>
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<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>In a
message dated 2/9/2009 8:09:26 A.M. Pacific Standard Time, vanputte@cox.net
writes:</span></font></p>
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<blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 3.0pt;
margin-left:3.0pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>I have
a problem which I am sure many other E-powered airplane owners <br>
have that I'd like to solve. I use an arming plug to connect the
two <br>
5S Lipo packs to the ESC. On initial contact of the arming plug
with <br>
the receptacle, there's a big spark thrown. Eventually the contacts
<br>
on the arming plug and receptacle get burned to the point where the <br>
electrical contact is very bad. Yesterday I had to land my airplane
<br>
deadstick because (I think) the ESC saw what it thought was low <br>
voltage out of the battery that was actually due to the burned arming <br>
plug/receptacle contacts. BTW, I am using high-amp Anderson Power <br>
Pole connectors, which are probably more susceptible to having the <br>
contacts burned than would Deans Ultra connectors.<br>
<br>
I have thought about putting a BIG capacitor in parallel with the <br>
arming plug, that would damp the initial current surge which causes <br>
the spark. The capacitor could be removed before flight.
However, <br>
I'm wondering if there's a more elegant solution.<br>
<br>
Ron Van Putte<br>
<br>
_______________________________________________<br>
NSRCA-discussion mailing list<br>
NSRCA-discussion@lists.nsrca.org<br>
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</span></font></p>
</blockquote>
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