<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">F3A is 42.56v<div><br></div><div><img src="cid:331EB149-07FF-4558-906C-50907B239922-L0-001"><br><br><div dir="ltr">Jas iP</div><div dir="ltr"><br><blockquote type="cite">On Jun 13, 2020, at 8:50 AM, Tjpritchett via NSRCA-discussion <nsrca-discussion@lists.nsrca.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8">This year the rules have changed. 45 volts is the limit. It was written to allow HV packs. Here’s the amendment in the 2020 AMA comp regs.....<div><br></div><div><div>4.1. Propulsion source limitations</div><div>Any suitable propulsion source may be used except those requiring solid expendable propellants, gaseous fuels (at room temperature and atmospheric pressure) or liquefied gaseous fuels. Electrically-powered model aircraft are limited to a maximum of 45.0 volts for the propulsion circuit, measured prior to flight while the competitor is in the ready box. A tolerance of 1% will be allowed for possible inconsistencies in measurement instruments and measurement operator error for battery voltage. A CD may waive all or some of the requirements for voltage measurement if not practical.</div><br><div id="AppleMailSignature">Sent from my iPhone</div><div><br>On Jun 13, 2020, at 8:46 AM, mups53 via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> wrote:<br><br></div><div><span></span></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><div dir="auto">At the Nats last year it was 42.999999. In Masters.</div><div dir="auto">Mike</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div id="composer_signature" dir="auto"><div style="font-size:85%;color:#575757" dir="auto">Sent from my Verizon, Samsung Galaxy smartphone</div></div><div dir="auto"><br></div><div><br></div><div style="font-size:100%;color:#000000" dir="auto"><!-- originalMessage --><div>-------- Original message --------</div><div>From: Jas S via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> </div><div>Date: 6/13/20 6:37 AM (GMT-06:00) </div><div>To: General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> </div><div>Subject: Re: [NSRCA-discussion] HV pack question about Nats voltage checks. </div><div><br></div></div>I believe F3A is still at 4.25v or 4.28v? It’s still early so I may be off <br><br><div dir="ltr">Jas iP</div><div dir="ltr"><br><blockquote type="cite">On Jun 13, 2020, at 12:19 AM, Joe Lachowski via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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<p class="MsoNormal">Battery checks on the flight line are really a waste of time. I did the checks at the 2011 Worlds in Muncie. A random cell count is all that is needed just to make sure no one is using 11 or higher cell count packs. HV packs are now legal
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:nsrca-discussion@lists.nsrca.org">mups53 via NSRCA-discussion</a><br>
<b>Sent: </b>Friday, June 12, 2020 8:21 PM<br>
<b>To: </b><a href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</a><br>
<b>Subject: </b>[NSRCA-discussion] HV pack question about Nats voltage checks.</p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">So here it goes.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">This has been wearing on me since the Nats last year.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> Let me start by saying that I market the 5S HV packs. A 10S pack is capable of charging to 43.5 volts. The rules say the legal limit is 42.99 volts. Capacity increases on the 5100 10S in the
neighborhood of 500 mAh with the added volt. That's consistent and quantifiable on my Power Lab chargers. So the added capacity is significant. In my case needed because I had a weight issue and was using the lighter 5100 packs instead of the 5800 packs I
normally like in competition.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> So here's the issue. At the Nats HV pack users were identified and voltage checked before each flight. Non HV pack users no check needed. The ID process was to look at the label on the packs.
So I have labels for our packs that say they are HV. I also have labels laying around that don't say HV. Albeit they say Gator Power packs instead of Power Unlimited HV. Anyone could easily dupe the system by putting a false label on an HV pack if that's the
only criteria in place.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> In fairness I believe all packs should get checked on the ready box. Every single fliers packs or don't check any. Or we could use an honor system which by all means I and I hope others would
adhere to thus eliminating the need to check.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> I hope to hear opinions on this and that it changes how it's being handled now.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Thanks, Mike Mueller </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;color:#575757">Sent from my Verizon, Samsung Galaxy smartphone<o:p></o:p></span></p>
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