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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m running a Hacker Q60, HV80 ESC, and 21x 14 prop.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The motor quickly reaches 5900+ rpm but quickly drops to 5700-5800 or less after a few seconds.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I tried a Jeti Mezon with similar results.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I tried a new Himax with similar results.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Only think left is the batteries.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> NSRCA-discussion [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Chris Moon via NSRCA-discussion<br><b>Sent:</b> Sunday, June 07, 2015 11:12 AM<br><b>To:</b> Stuart Chale; General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Battery Resistance<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>IR numbers of 6-7 per cell mean the packs are pretty much done for our purposes. A good new 25C pack should have IR numbers around 2-3 and a 35C pack around 1.8-2.2 or so. Essentially with an IR of 6 you have a battery that will perform like a 10C or 15C battery which will limit the top power output and will run hotter doing so.<br><br>Chris<o:p></o:p></p><div><p class=MsoNormal>On 6/7/2015 11:04 AM, Stuart Chale via NSRCA-discussion wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'>2 possibilities.<br>1) packs are worn out replace and fly (most likely)<br>2) Motor is messed up rotor demagnetized if Neu or Hacker etc. Generally current is much higher than expected and hotter after a flight. <br><br>If you fly with another pattern pilot with similar battery setup/connectors you could always borrow a good battery for a flight.<o:p></o:p></p><div><p class=MsoNormal>On 6/7/2015 10:55 AM, Ron Hansen via NSRCA-discussion wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The packs are less than adequate on some or most of the advanced maneuvers.</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>They are also getting more and more difficult to charge to close to 100%. Actually I can’t really get then to 98%.</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:atwooddon@aol.com">atwooddon@aol.com</a> [<a href="mailto:atwooddon@aol.com">mailto:atwooddon@aol.com</a>] <br><b>Sent:</b> Sunday, June 07, 2015 10:35 AM<br><b>To:</b> <a href="mailto:rcpilot@wowway.com">rcpilot@wowway.com</a>; <a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br><b>Subject:</b> Re: [NSRCA-discussion] Battery Resistance</span><o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Ron, what is the pack temperature when you are measuring the resistance? Temperature has a big impact on the measurement.<br><br>Also, how are you measuring the resistance? <br><br>If those are the resistance values (6 per cell) at 70F measured with an iCharger, FMA charger or Giles dedicated meter, then the pack is starting to get 'tired'. However, if they get you thru your sequence and isn't too hot at the end, go ahead and use them until they don't perform adequately.<br><br>Another thing that can kinda sneak up on you is lipo packs gradually loose capacity over time. If you fly the same sequence each time and the voltage at the end gets lower and lower, the packs are probably loosing total capacity.<br><br>Don</span><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----Original Message-----<br>From: Ron Hansen via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>To: NSCRA Discussion List <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>Sent: Sun, Jun 7, 2015 7:24 am<br>Subject: [NSRCA-discussion] Battery Resistance</span><o:p></o:p></p><div id="AOLMsgPart_1.2_8709ee0a-ecfa-427d-903e-fb7a1b6d2a5a"><div><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>How do I know when it is time to replace my batteries.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The total resistance in my 5 cell Zippy Compacts is 30 – 33 milli ohms (about 6 per cell).</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks</span><o:p></o:p></p></div></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br><br>__________ Information from ESET Smart Security, version of virus signature database 11748 (20150607) __________ <br><br>The message was checked by ESET Smart Security. <br><br><a href="http://www.eset.com" target="_blank">http://www.eset.com</a> </span><o:p></o:p></p></div></div><div id="AOLMsgPart_2_12cd000a-bcc0-4df0-b64f-8336f6193f52"><pre style='background:white'><tt>_______________________________________________</tt><o:p></o:p></pre><pre style='background:white'><tt>NSRCA-discussion mailing</tt><o:p></o:p></pre><pre style='background:white'><tt>list</tt><o:p></o:p></pre><pre style='background:white'><tt><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a></tt><o:p></o:p></pre><pre style='background:white'><tt><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></tt><o:p></o:p></pre></div></div><p class=MsoNormal><br><br>__________ Information from ESET Smart Security, version of virus signature database 11748 (20150607) __________<br><br>The message was checked by ESET Smart Security.<br><br><a href="http://www.eset.com">http://www.eset.com</a><o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>NSRCA-discussion mailing list<o:p></o:p></pre><pre><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><o:p></o:p></pre><pre><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></pre></blockquote><p class=MsoNormal style='margin-bottom:12.0pt'><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>NSRCA-discussion mailing list<o:p></o:p></pre><pre><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><o:p></o:p></pre><pre><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></pre></blockquote><p class=MsoNormal><br><br><br>__________ Information from ESET Smart Security, version of virus signature database 11748 (20150607) __________<br><br>The message was checked by ESET Smart Security.<br><br><a href="http://www.eset.com">http://www.eset.com</a><br><br><br>__________ Information from ESET Smart Security, version of virus signature database 11748 (20150607) __________<br><br>The message was checked by ESET Smart Security.<br><br><a href="http://www.eset.com">http://www.eset.com</a><o:p></o:p></p><p class=MsoNormal><span style='color:windowtext'><br><br>__________ Information from ESET Smart Security, version of virus signature database 11748 (20150607) __________<br><br>The message was checked by ESET Smart Security.<br><br><a href="http://www.eset.com">http://www.eset.com</a><o:p></o:p></span></p></div></body></html>