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<font face="Arial"> Dave, there could also be some owies on the fingers
of the person creating the arcing. Don't ask how I know... ;-{(</font><br>
<pre class="moz-signature" cols="72">_____
Phil Spelt, KCRC Emeritus, Secretary
AMA 1294 Scientific Leader Member
SPA L-18, Board Member
(865)435-1476v, (865)604-0541c</pre>
<br>
On 2/25/2015 8:09 PM, Dave Lockhart via NSRCA-discussion wrote:
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<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">There
is no harm to the batteries or ESC from the spark. There can be some
erosion on the connectors from the arcing. Most connectors suffer the
erosion on the ends of the connectors, and not on the mating
surfaces….in which case, the erosion really doesn’t cause a problem.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Anti-spark
arming circuits that are in the primary power delivery pathway are a
potential point of failure. Much better to use a secondary parallel
pathway to absorb the spark and charge the caps, and then plug in the
primary leads, and then disconnect the secondary ones.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Dave<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";">From:</span></b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";">
NSRCA-discussion [<a class="moz-txt-link-freetext" href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>] <b>On
Behalf Of </b>learn2turn via NSRCA-discussion<br>
<b>Sent:</b> Sunday, February 22, 2015 4:22 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br>
<b>Subject:</b> Re: [NSRCA-discussion] arm/disarm 10S<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div id="yui_3_16_0_1_1424639803759_3162">
<p class="MsoNormal"
style="background: white none repeat scroll 0% 0%; -moz-background-clip: border; -moz-background-origin: padding; -moz-background-inline-policy: continuous;"><span
style="font-size: 9pt; font-family: helveticaneue; color: black;">Regarding
an arming system, I don't fly 10S but from what I understand when you
are up around 8-10S it is a bad idea to connect the batteries
directly. The caps on the front-end of the ESC can instantly draw a
huge surge of current for a short time. The arming systems for that
sized pack usually have a button with a resister in series. You hit
the button for a few seconds and that lets the caps charge up slowly.
Then you plug the full-current connector in.<o:p></o:p></span></p>
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style="font-size: 9pt; font-family: helveticaneue; color: black;"><o:p> </o:p></span></p>
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<p class="MsoNormal"
style="background: white none repeat scroll 0% 0%; -moz-background-clip: border; -moz-background-origin: padding; -moz-background-inline-policy: continuous;"><span
style="font-size: 9pt; font-family: helveticaneue; color: black;">-Ken<o:p></o:p></span></p>
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