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<DIV><FONT face=Arial size=2>Jim, cool idea, maybe you can build into it the
capacitor idea you had a while back to stop that nasty POP when we plug
in.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Keith</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=joddino@socal.rr.com href="mailto:joddino@socal.rr.com">James
Oddino</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, August 29, 2008 11:22
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] FW: ESVs
for flight pack lipos?</DIV>
<DIV><BR></DIV>Hi Gordon,
<DIV><BR></DIV>
<DIV>I suspected that. I was thinking of building a gadget that lit up
an LED if the voltage was over 41 or so. It could be very inexpensive
and could save a set of expensive batteries. I have seen more than one
guy take off with batteries they thought they had charged. They found
out only when the voltage had dropped too low. I almost did it once but
I had an Eagle Tree TM system and checked the voltage before I took off.
I don't always use the ET so it would be nice to have another painless
way to know the packs are charged.</DIV>
<DIV><BR></DIV>
<DIV>Jim </DIV>
<DIV><BR></DIV>
<DIV><BR>
<DIV>
<DIV>On Aug 29, 2008, at 6:16 AM, Gordon Anderson wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite">
<DIV
style="WORD-WRAP: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space">
<DIV dir=ltr align=left><SPAN class=937321313-29082008><FONT
face="Comic Sans MS" color=#0000ff>Jim,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=937321313-29082008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=937321313-29082008><FONT
face="Comic Sans MS" color=#0000ff>The maestro will not accept a 42 volt
input. It was designed as a flight pack testing system and includes a
programmable battery load. It will calculate and display the packs internal
resistance as well. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=937321313-29082008><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=937321313-29082008><FONT
face="Comic Sans MS" color=#0000ff>--Gordon</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org [<A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>]
<B>On Behalf Of </B>James Oddino<BR><B>Sent:</B> Thursday, August 28, 2008
4:18 PM<BR><B>To:</B> General pattern discussion<BR><B>Subject:</B> Re:
[NSRCA-discussion] FW: ESVs for flight pack lipos?<BR></FONT><BR></DIV>
<DIV></DIV>What is the voltage range? I'd like to have a unit that
would stay in the plane and tell me that my 42 volt battery is charged when
I plug it in.
<DIV><BR></DIV>
<DIV>Jim</DIV>
<DIV><BR></DIV>
<DIV><BR>
<DIV>
<DIV>On Aug 28, 2008, at 3:42 PM, Derek Koopowitz wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite"><SPAN class=Apple-style-span
style="WORD-SPACING: 0px; FONT: 18px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0">
<DIV class=hmmessage style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
<DIV dir=ltr align=left><SPAN class=343253922-28082008><FONT face=Arial
color=#0000ff>I bought mine from Gordon Anderson...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=343253922-28082008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=343253922-28082008><FONT face=Arial
color=#0000ff><A
href="http://www.mstar2k.com/">http://www.mstar2k.com/</A></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=343253922-28082008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=343253922-28082008><FONT face=Arial
color=#0000ff>Look for the Maestro on his page.</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma><B>From:</B><SPAN
class=Apple-converted-space> </SPAN><A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A><SPAN
class=Apple-converted-space> </SPAN>[<A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</A>]<SPAN
class=Apple-converted-space> </SPAN><B>On Behalf Of<SPAN
class=Apple-converted-space> </SPAN></B>Richard
Strickland<BR><B>Sent:</B><SPAN
class=Apple-converted-space> </SPAN>Thursday, August 28, 2008 11:36
AM<BR><B>To:</B><SPAN class=Apple-converted-space> </SPAN>NSRCA
DISCUSSION<BR><B>Subject:</B><SPAN
class=Apple-converted-space> </SPAN>[NSRCA-discussion] FW: ESVs for
flight pack lipos?<BR></FONT><BR></DIV>
<DIV></DIV><BR>I'm switching some of my stuff to 2 cell lipos into a
regulator (learned the hard way that you separate the regulator on the
OTHER side of the switch from the battery--but that's another
story).<BR>The question(s): What is a good, relatively small ESV that has
a load to check the lipos? What voltage do you let them get down to before
no go?<BR>My 30 year old SO (Ye Olde ESV) ranges just miss that
middle ground. I've got a voltmeter--but it's not loaded. On a 1200
pack(still lighter than 4 nicads WITH reg.) on four flights, the drop
was from 8.4 down to 8.25V. I'm going to a 780 on another airplane
and my understanding guys are getting up to 7-8 flights on that size
pack. But how do you check
them?<BR> <BR>Thanks,<BR> <BR>Richard<BR><BR>
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