<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Not if it was a switching regulator. </DIV>
<DIV> </DIV>
<DIV>John Pavlick<BR><BR>--- On <B>Mon, 3/1/10, Jay Marshall <I><lightfoot@sc.rr.com></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From: Jay Marshall <lightfoot@sc.rr.com><BR>Subject: Re: [NSRCA-discussion] Max volts<BR>To: "'General pattern discussion'" <nsrca-discussion@lists.nsrca.org><BR>Date: Monday, March 1, 2010, 10:33 AM<BR><BR>
<DIV class=plainMail>The motor current x voltage drop in the regulator = wasted heat<BR><BR>Jay Marshall<BR><BR>-----Original Message-----<BR>From: <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" ymailto="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A><BR>[mailto:<A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" ymailto="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A>] On Behalf Of Ron Van Putte<BR>Sent: Monday, March 01, 2010 10:30 AM<BR>To: General pattern discussion<BR>Subject: Re: [NSRCA-discussion] Max volts<BR><BR>Never thought of that, but wouldn't the energy to regulate down the <BR>42.56 volts just be dumped as heat?<BR><BR>Ron<BR><BR>On Mar 1, 2010, at 8:54 AM, krishlan fitzsimmons wrote:<BR><BR>> Couldn't we go to a higher voltage and regulate it back
down? A <BR>> contstant 42.56v would be nice!<BR>><BR>> Chris<BR>><BR>><BR>><BR>><BR>><BR>> From: Chad Northeast <<A href="http://us.mc805.mail.yahoo.com/mc/compose?to=chad@f3acanada.org" ymailto="mailto:chad@f3acanada.org">chad@f3acanada.org</A>><BR>> To: <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion@lists.nsrca.org" ymailto="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</A><BR>> Sent: Sun, February 28, 2010 8:48:48 PM<BR>> Subject: Re: [NSRCA-discussion] Max volts<BR>><BR>> You would be at about 50% capacity at 3.85 ish volts/cell (resting <BR>> open circuit), so unless you up the capacity you will have a pretty <BR>> restricted flight time.<BR>><BR>> Chad<BR>><BR>> On 10-02-28 9:25 PM, Ron Van Putte wrote:<BR>> > That stirs a wild thought in my brain. Fully charged packs don't <BR>> stay at 4.2
volts per cell very long. On the other hand, once the <BR>> initial charge voltage is burned off by a constant load, the <BR>> voltage loss curve "flattens out". What if you put fully charged <BR>> 6S and a 5S packs in series and "burn them down" to 3.869 volts per <BR>> cell (a total of 42.56 volts for an 11-cell pack) so they were <BR>> legal for use. Would the voltage of this depleted 11S pack be <BR>> higher than a fully charged 10S pack at the end of a typical <BR>> flight? If the end-of-flight voltage might be significantly higher <BR>> for the 11S pack vice a 10S pack, it would be worth investigating, <BR>> even considering the extra weight of the additional cell. Come on <BR>> you electronic gurus, show me where I'm wrong.<BR>> ><BR>> > Ron Van Putte<BR>> ><BR>> > On Feb 28, 2010, at 10:00 PM, James
Oddino wrote:<BR>> ><BR>> >> What comes after ...? Does it specify a load or any other <BR>> conditions? Is it measured during the noise test and have a <BR>> minimum value?<BR>> >><BR>> >> Just stirring the pot, Jim O<BR>> >><BR>> >><BR>> >> On Feb 28, 2010, at 5:21 PM, John Fuqua wrote:<BR>> >><BR>> >>> No its not (assuming we are talking RC Aerobatics). Try page <BR>> RCA-2 para 4.1<BR>> >>> which states "Electrically-powered model aircraft are limited <BR>> to a maximum<BR>> >>> of 42.56 volts.."<BR>> >>><BR>> >>> -----Original Message-----<BR>> >>> From: <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" ymailto="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A><BR>>
>>> [mailto:<A href="http://us.mc805.mail.yahoo.com/mc/compose?to=nsrca-discussion-bounces@lists.nsrca.org" ymailto="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A>] On Behalf Of <BR>> Ron Van Putte<BR>> >>> Sent: Sunday, February 28, 2010 7:07 PM<BR>> >>> To: General pattern discussion<BR>> >>> Subject: Re: [NSRCA-discussion] Max volts<BR>> >>><BR>> >>> It's in the general rules, not in the R/C section.<BR>> >>><BR>> >>><BR>> >>> On Feb 28, 2010, at 6:50 PM, Jim Quinn wrote:<BR>> >>><BR>> >>>> Where can I find the rule for max volts?<BR>> >>>><BR>> >>>> _______________________________________________<BR>> >>>> NSRCA-discussion mailing list<BR>> >>>> <A
href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" ymailto="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><BR>> >>><BR>> >>> _______________________________________________<BR>> >>> NSRCA-discussion mailing list<BR>> >>> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" ymailto="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><BR>> >>><BR>> >>> _______________________________________________<BR>> >>> NSRCA-discussion
mailing list<BR>> >>> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" ymailto="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><BR>> >><BR>> >> _______________________________________________<BR>> >> NSRCA-discussion mailing list<BR>> >> <A href="http://us.mc805.mail.yahoo.com/mc/compose?to=NSRCA-discussion@lists.nsrca.org" ymailto="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><BR>> ><BR>> > _______________________________________________<BR>> > NSRCA-discussion mailing
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