[NSRCA-discussion] FW: ESVs for flight pack lipos?

Fri Aug 29 10:57:24 AKDT 2008

Maybe someone needs to have Coors make a label for your batteries. . . when
they're charged and ready to fly it turns the color of the Rocky Mountains.
. .

On Fri, Aug 29, 2008 at 12:27 PM, Anthony Romano <anthonyr105 at hotmail.com>wrote:

> Packs come off charger and get a rubber band over them. When the go in the
> plane rubber band comes off. Same concept less bread.
>
>
>
> ------------------------------
> > From: vanputte at cox.net
> > Date: Fri, 29 Aug 2008 11:51:25 -0500
> > To: nsrca-discussion at lists.nsrca.org
> > Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?
> >
> > 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 at socal.rr.com> wrote:
> > > From: James Oddino <joddino at socal.rr.com>
> > > Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?
> > > To: "General pattern discussion" <nsrca-discussion at 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 at lists.nsrca.org [mailto:nsrca-
> > >> discussion-bounces at 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 at lists.nsrca.org [mailto:nsrca-
> > >>> discussion-bounces at 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 at lists.nsrca.org
> > >>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
> > >>
> > >> _______________________________________________
> > >> NSRCA-discussion mailing list
> > >> NSRCA-discussion at lists.nsrca.org
> > >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
> > >
> > > _______________________________________________ NSRCA-discussion
> > > mailing list NSRCA-discussion at lists.nsrca.org http://
> > > lists.nsrca.org/mailman/listinfo/nsrca-discussion
> > > _______________________________________________
> > > NSRCA-discussion mailing list
> > > NSRCA-discussion at lists.nsrca.org
> > > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
> >
> > _______________________________________________
> > NSRCA-discussion mailing list
> > NSRCA-discussion at lists.nsrca.org
> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>
> ------------------------------
> Talk to your Yahoo! Friends via Windows Live Messenger. Find Out How<http://www.windowslive.com/explore/messenger?ocid=TXT_TAGLM_WL_messenger_yahoo_082008>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>

-- 

Keith Hoard
Collierville, TN
khoard at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.nsrca.org/pipermail/nsrca-discussion/attachments/20080829/69ae3069/attachment.html>