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</o:shapelayout></xml><![endif]--></head><body 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'>Peter,<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'>HV servos on unregulated 2S lipo is akin to std servos on unregulated 4s/5s Nixx.<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'>Using a regulator is a separate issue…..the real purpose of the regulator is to provide constant voltage to the servos regardless of the operational voltage range.<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'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><br>Dave<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'><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><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"'> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Peter Vogel<br><b>Sent:</b> Monday, January 23, 2012 5:56 PM<br><b>To:</b> General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Main battery redundant lead for receiver<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Ah. Now that's a good idea + point. And then, in my case, where I'm running HV, I don't even need a reg. That would provide true power redundancy for almost no weight penalty, though it does run the risk of yanking your RX out if your main battery ejects, or, even if it doesn't yank the Rx (which is held in by 6 servo leads after all, it could yank the redundant battery lead loose and the main system battery is of course yanking itself, so you are left with no radio...<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Scott, how do you come up with 20g savings? What size Rx battery are you running? My TP 1350's weigh 76g, even 900's are in the 60+g range.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Peter+<o:p></o:p></p><div><p class=MsoNormal>On Mon, Jan 23, 2012 at 2:51 PM, Keith Hoard <<a href="mailto:khoard@gmail.com">khoard@gmail.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Only tap off two cells of your main pack. You can then use a regular regulator (as opposed to a non-regular regulator). <span class=hoenzb><span style='color:#888888'><o:p></o:p></span></span></p><div><p class=MsoNormal><span style='color:#888888'>Keith Hoard</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#888888'>Collierville, TN<o:p></o:p></span></p></div></div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>On Jan 23, 2012, at 16:49, Peter Vogel <<a href="mailto:vogel.peter@gmail.com" target="_blank">vogel.peter@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>And, of course, with a non-switching BEC off a 10s or even a 5s pack you would have massive heat issues as it tries to step down the voltage from 18.5 volts to 7.2 or 6 volts, depending on whether you are running an HV or standard voltage setup, so the regulator would probably need a fan or heat sink of some sort, which likely negates any weight savings from not running with a second battery.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Peter+<o:p></o:p></p><div><p class=MsoNormal>On Mon, Jan 23, 2012 at 2:30 PM, Scott McHarg <<a href="mailto:scmcharg@gmail.com" target="_blank">scmcharg@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal>You have to be careful using the BEC, especially from CC because it is a switching regulator which cannot be run in parallel. It's really best not to use the BEC and set up a truly separate system.<br><br>Scott<o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Jan 23, 2012 at 4:28 PM, George Kennie <<a href="mailto:geobet4evr@gmail.com" target="_blank">geobet4evr@gmail.com</a>> wrote:<o:p></o:p></p><div><p class=MsoNormal>Could a CC BEC also be used instead of a reg.? I don't know how much curent is passed by a reg. <o:p></o:p></p></div><div><p class=MsoNormal>Sounds good cause it's a bummer trying to solder an extra lead to the Deans.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>G.<o:p></o:p></p></div><div><div><div><p class=MsoNormal>On Mon, Jan 23, 2012 at 5:09 PM, Scott McHarg <<a href="mailto:scmcharg@gmail.com" target="_blank">scmcharg@gmail.com</a>> wrote:<o:p></o:p></p></div></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Guys,<br> Chris Moon just e-mailed me about some leads that were done at the factory. These leads run off your balance leads to a voltage regulator and allow your main battery pack to be utilized as a redundant receiver battery. It is NOT meant to be a primary but it will save 20+ grams if you're running 2 rx batteries. You still have to run the 2nd regulator for true redundancy but you eliminate the 2nd battery. These leads are factory made and eliminate the need to make them yourself with the concern about plugging in to the wrong cell. I know in my article, I was pretty much against doing this as a backup but, with Chris having this made at the factory, he has all but eliminated making a mistake by tying to the wrong cell. I have the link that I'll e-mail you off-list or you can just go to his website. I don't want to break the NSRCA list rules by advertising for him even though he advertises with the NSRCA. The leads are only $3.99 each and are found under the Connectors/Adapters listing.<br><br>Thank,<br>Scott<span style='color:#888888'><br clear=all><br>-- <br></span><b><span style='font-size:13.5pt;font-family:"Comic Sans MS";color:#3333FF'>Scott A. McHarg</span></b><span style='color:#888888'><br><br></span><o:p></o:p></p></div></div><p class=MsoNormal>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p></blockquote></div><p class=MsoNormal><br><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p></div></div><p class=MsoNormal><span style='color:#888888'>-- <br></span><b><span style='font-size:13.5pt;font-family:"Comic Sans MS";color:#3333FF'>Scott A. McHarg</span></b><span style='color:#888888'><br><br></span><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><p class=MsoNormal>Director, Fixed Wing Flight Training<o:p></o:p></p></div><div><p class=MsoNormal>Santa Clara County Model Aircraft Skypark<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p></o:p></p></div></div></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org" target="_blank">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p></div></blockquote></div></div></div><p class=MsoNormal><br>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><p class=MsoNormal>Director, Fixed Wing Flight Training<o:p></o:p></p></div><div><p class=MsoNormal>Santa Clara County Model Aircraft Skypark<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><img border=0 id="_x0000_i1025" src="http://farm8.staticflickr.com/7163/6513778381_5569cc985d_m.jpg"><o:p></o:p></p></div></div></div></body></html>