<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Cool. I like simple stuff like that. </DIV>
<DIV> </DIV>
<DIV>John Pavlick<BR><BR>--- On <B>Fri, 8/29/08, Ron Van Putte <I><vanputte@cox.net></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid">From: Ron Van Putte <vanputte@cox.net><BR>Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?<BR>To: "General pattern discussion" <nsrca-discussion@lists.nsrca.org><BR>Date: Friday, August 29, 2008, 4:51 PM<BR><BR><PRE>A friend was putting Lipos into his airplane and I noticed he took
one of those plastic tags, like are used to seal of the ends of the
bags covering loaves of bread, off the positive lead of the battery.
I asked him what that was all about. He explained that he put the
tags on the battery leads after he'd charged the batteries. If he
didn't find a plastic tag, the battery wasn't charged. That way he
only needs one ammo can to keep Lipos in.
Ron VP
On Aug 29, 2008, at 11:33 AM, John Pavlick wrote:
> I use a really simple method to avoid this problem. I have 2 cases
> for my batteries. One is the "charged and ready" case and the
other
> is the "I just flew these" case. Battereis come OUT of the
charged
> and ready case and go INTO the plane. When you land, the batteries
> come OUT of the plane and go INTO the other case. The logic for
> charging is opposite that of flying. As long as you don't put the
> batteries in the wrong case, it works. You have to develop a habit
> but it's not too difficult. Works for me and it costs nothing.
>
> John Pavlick
>
> --- On Fri, 8/29/08, James Oddino <joddino@socal.rr.com> wrote:
> From: James Oddino <joddino@socal.rr.com>
> Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?
> To: "General pattern discussion"
<nsrca-discussion@lists.nsrca.org>
> Date: Friday, August 29, 2008, 4:22 PM
>
> Hi Gordon,
>
> 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.
>
> Jim
>
>
> On Aug 29, 2008, at 6:16 AM, Gordon Anderson wrote:
>
>> Jim,
>>
>> 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.
>>
>> --Gordon
>>
>> From: nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-
>> discussion-bounces@lists.nsrca.org] On Behalf Of James Oddino
>> Sent: Thursday, August 28, 2008 4:18 PM
>> To: General pattern discussion
>> Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?
>>
>> 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.
>>
>> Jim
>>
>>
>> On Aug 28, 2008, at 3:42 PM, Derek Koopowitz wrote:
>>
>>> I bought mine from Gordon Anderson...
>>>
>>> http://www.mstar2k.com/
>>>
>>> Look for the Maestro on his page.
>>>
>>> From: nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-
>>> discussion-bounces@lists.nsrca.org] On Behalf Of Richard
Strickland
>>> Sent: Thursday, August 28, 2008 11:36 AM
>>> To: NSRCA DISCUSSION
>>> Subject: [NSRCA-discussion] FW: ESVs for flight pack lipos?
>>>
>>>
>>> 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).
>>> 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?
>>> 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?
>>>
>>> Thanks,
>>>
>>> Richard
>>>
>>> See what people are saying about Windows Live. Check out featured
>>> posts. Check It Out!
>>> Talk to your Yahoo! Friends via Windows Live Messenger. Find Out
>>> How _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion@lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion@lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>
> _______________________________________________ NSRCA-discussion
> mailing list NSRCA-discussion@lists.nsrca.org http://
> lists.nsrca.org/mailman/listinfo/nsrca-discussion
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion@lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
_______________________________________________
NSRCA-discussion mailing list
NSRCA-discussion@lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
</PRE></BLOCKQUOTE></td></tr></table>