[NSRCA-discussion] HV pack question about Nats voltage checks.

[Vicente Bortone]

On Sat, Jun 13, 2020 at 10:58 AM Derek Koopowitz <derekkoopowitz at gmail.com>
wrote:

> F3C are already using 12s batteries.
>
>  I know .  You touch those open leads by mistake and could kill you.  Of
> course I understand that in our application the chances that happens  are
> very low
>
Vicente “Vince” Bortone

*From: *NSRCA-discussion <nsrca-discussion-bounces at lists.nsrca.org> on
> behalf of NSRCA List <nsrca-discussion at lists.nsrca.org>
> *Reply-To: *Vicente Bortone <vincebrc at gmail.com>, NSRCA List <
> nsrca-discussion at lists.nsrca.org>
> *Date: *Saturday, June 13, 2020 at 8:45 AM
> *To: *NSRCA List <nsrca-discussion at lists.nsrca.org>, <davel322 at comcast.net
> >
> *Subject: *Re: [NSRCA-discussion] HV pack question about Nats voltage
> checks.
>
>
>
> Something that I learned in a company safety meeting.  When electrician
> are working with DC voltages over 50 volts it requires special safety
> measures and equipment.  This is probably a reason why FAI-F3a does not
> want to go 12 S.
>
>
>
> I could check with safety manager if someone would like more detailed
> information
>
>
>
> Vicente “Vince” Bortone
>
>
>
> On Sat, Jun 13, 2020 at 8:03 AM davel322--- via NSRCA-discussion <
> nsrca-discussion at lists.nsrca.org> wrote:
>
> FAI was 42.56 last time I checked.
>
>
>
> 2011 at the WC, HV packs were not available.
>
>
>
> Nonetheless, standard packs can be charged to a higher voltage (not
> recommended of course), so I think the point Mike is making is quite valid
> for F3A.  For AMA, counting cells as Joe stated would seem sufficient.
>
>
>
> Regards,
>
>
> Dave
>
>
>
> *From:* NSRCA-discussion <nsrca-discussion-bounces at lists.nsrca.org> *On
> Behalf Of *Jas S via NSRCA-discussion
> *Sent:* Saturday, June 13, 2020 7:37 AM
> *To:* General pattern discussion <nsrca-discussion at lists.nsrca.org>
> *Subject:* Re: [NSRCA-discussion] HV pack question about Nats voltage
> checks.
>
>
>
> I believe F3A is still at 4.25v or 4.28v? It’s still early so I may be off
>
> Jas iP
>
>
>
> On Jun 13, 2020, at 12:19 AM, Joe Lachowski via NSRCA-discussion <
> nsrca-discussion at lists.nsrca.org> wrote:
>
> 
>
> Battery checks on the flight line are really a waste of time. I did the
> checks at the 2011 Worlds in Muncie. A random cell count is all that is
> needed just to make sure no one is using 11 or higher cell count packs. HV
> packs are now legal too.
>
>
>
>
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
>
>
> *From: *mups53 via NSRCA-discussion <nsrca-discussion at lists.nsrca.org>
> *Sent: *Friday, June 12, 2020 8:21 PM
> *To: *General pattern discussion <nsrca-discussion at lists.nsrca.org>
> *Subject: *[NSRCA-discussion] HV pack question about Nats voltage checks.
>
>
>
>
>
> So here it goes.
>
> This has been wearing on me since the Nats last year.
>
>  Let me start by saying that I market the 5S HV packs. A 10S pack is
> capable of charging to 43.5 volts. The rules say the legal limit is 42.99
> volts. Capacity increases on the 5100 10S in the neighborhood of 500 mAh
> with the added volt. That's consistent and quantifiable on my Power Lab
> chargers. So the added capacity is significant. In my case needed because I
> had a weight issue and was using the lighter 5100 packs instead of the 5800
> packs I normally like in competition.
>
>  So here's the issue. At the Nats HV pack users were identified and
> voltage checked before each flight. Non HV pack users no check needed. The
> ID process was to look at the label on the packs. So I have labels for our
> packs that say they are HV. I also have labels laying around that don't say
> HV. Albeit they say Gator Power packs instead of Power Unlimited HV. Anyone
> could easily dupe the system by putting a false label on an HV pack if
> that's the only criteria in place.
>
>  In fairness I believe all packs should get checked on the ready box.
> Every single fliers packs or don't check any. Or we could use an honor
> system which by all means I and I hope others would adhere to thus
> eliminating the need to check.
>
>  I hope to hear opinions on this and that it changes how it's being
> handled now.
>
>
>
> Thanks, Mike Mueller
>
>
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
>
>
>
>
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> --
>
> Vicente "Vince" Bortone
>
> _______________________________________________ NSRCA-discussion mailing
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-- 
Vicente "Vince" Bortone
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