[NSRCA-discussion] ** Klipped ** Re: Falcon F3A batteries

[George Kennie]

Yeah, I've always been confused by this too. The only reason I can see to keep
an eye on these babies is so that when they blow, it might be possible for the
LFD to arrive in time to save the last wall of the house in case it's still
standing. Let's face it, if your baby sitting the pak and it blows what are the
options for corrective action. An extinguisher is totally useless and can you
get close enough to it to throw some sand on it?
At this point I am of the opinion that a really good ballancing charger is your
best protection based on information presented at the WRAM show by FMA regarding
their Kokam Paks. These guys are stating that it is now safe to charge your paks
"in the airplane" and at a 3C rate and you should expect upwards of 400 cycles.
They are also experimenting with 10C rates which equates to all that stuff we
heard of this week about the Makita stuff. The times they are achangin' boys!
G.

Del K. Rykert wrote:

> So I take it you don't baby-sit your batteries as they are charging? I was
> under impression most feel need to keep an eye on them while charging?
> Color me further confused.
>
>                  Del
>           nsrca - 473
>
> ----- Original Message -----
> From: "Richard Strickland" <richard.s at allied-callaway.com>
> To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
> Sent: Thursday, March 30, 2006 6:02 PM
> Subject: Re: [NSRCA-discussion] Falcon F3A batteries
>
> >I would put the wings on and batteries in at the car, lug it, another set
> >of
> > batts, and the transmitter out to the flightline, fly, remove that set,
> > put
> > in the second, run the first set to the car to charge, fly, remove the
> > second set, put in the third, run the second set to the car, bitch that
> > the
> > first set wasn't quite done, fly, take the third set out, run to the car,
> > exchange the first set for the second set, install the first again and
> > fly,
> > take the airplane and trans back to the car, remove wings, load and go
> > home.
> > Several times from the time I left work and the time I got home was right
> > at
> > 2 hours total and the field is roughly 20 mins away to and from.  4 flts
> > in
> > about an hour and 15 mins. with 3 sets at 1C charge rate.  5 flts would
> > start to stretch things out.  I left the scene about the time balancing
> > started to hit stride.  At 1.5 C you could get 5-6 in 2hours or so.  No
> > field box, tools, fuel, starter, paper towels and Windex, extra trips to
> > the
> > car to get going; no clean up and hauling it all back to the car.   Of
> > course, there were more social evenings that took more time-but if I was
> > 'on
> > a mission' to practice with limited time, the guys understood.  BTW, the
> > Hackers and Master controllers did just fine temperature wise.  Things
> > seemed so reliable in that department that I had asked Hacker how long b4
> > I
> > have to do some service on the motor and gearbox-they said to send it back
> > about every 300 flts and they'd clean and regrease the gear-set, replace
> > if
> > needed(15.00), and the motor would run almost indefinitely.  With the
> > exception of installing the wings, it's like flying foamies-you do the
> > same
> > stuff-just a little bigger.  Speaking of Chip, I noticed he processed 5
> > sets
> > at the Worlds'.  Man, that's livin'!   A small red Honda may be in my
> > future....
> >
> > Richard
> >
> > -----Original Message-----
> > From: nsrca-discussion-bounces at lists.nsrca.org
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org]  On Behalf Of J.Oddino
> > Sent: Thursday, March 30, 2006 3:47 PM
> > To: NSRCA Mailing List
> > Subject: Re: [NSRCA-discussion] Falcon F3A batteries
> >
> > Richard, can you explain why you got so many more flights in a given
> > amount
> > of field time.  Less tinkering or what?  I've heard Chip make similar
> > comments.
> >
> > Jim O
> >
> >
> > ----- Original Message -----
> > From: "Richard Strickland" <richard.s at allied-callaway.com>
> > To: "'NSRCA Mailing List'" <nsrca-discussion at lists.nsrca.org>
> >
>
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