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<font size=3>And about 6 more things to break or go awry in the middle of
a flight. So long, KISS!!<br><br>
At 07:34 PM 3/1/2010, you wrote:<br>
<blockquote type=cite class=cite cite="">That's a good idea. I
imagine it would take a little modification to the rule to specify how a
system like this could be applied. This could be put together
external to the speed controller and function automatically through
active voltage sensing. Eventually the ESC mfgs could go a step
further an just integrate this right into the controller. Slick,
simple concept Jim!<br><br>
Ed<br><br>
--------------------------------------------------<br>
From: "James Oddino" <joddino@socal.rr.com><br>
Sent: Monday, March 01, 2010 7:15 PM<br>
To: "General pattern discussion"
<nsrca-discussion@lists.nsrca.org><br>
Subject: Re: [NSRCA-discussion] Max volts<br><br>
<blockquote type=cite class=cite cite="">I have the functional concept
that solves the rules problem. Picture a 10S pack positive lead
wired to the common of a switch with two poles, a piece of wire connected
from one pole to a pole on a second two pole switch with its common
connected to the ESC. Between the other two poles we place our 11th
cell. When the 10S pack is above 37.5 volts the 11th cell is
bypassed and when it is below, like it will be during vertical maneuvers
late in flight, the 11th cell is put in series to boost the voltage to up
to 41.7 volts. At no time is the voltage over the spec.<br><br>
Having said that, I believe the 10S system provides adequate power with
the right motor at all times of flight even if the voltage drops to 35
volts.<br><br>
Jim<br><br>
<br>
On Mar 1, 2010, at 8:59 AM, Bob Kane wrote:<br><br>
<blockquote type=cite class=cite cite="">Going higher and regulating down
would be against the rules, the max volts is still limited to
42.56.<br><br>
Bob Kane<br>
getterflash@yahoo.com<br><br>
<br>
--- On Mon, 3/1/10, krishlan fitzsimmons
<homeremodeling2003@yahoo.com> wrote:<br><br>
<blockquote type=cite class=cite cite="">From: krishlan fitzsimmons
<homeremodeling2003@yahoo.com><br>
Subject: Re: [NSRCA-discussion] Max volts<br>
To: chad@f3acanada.org, "General pattern discussion"
<nsrca-discussion@lists.nsrca.org><br>
Date: Monday, March 1, 2010, 9:54 AM<br><br>
Couldn't we go to a higher voltage and<br>
regulate it back down? A contstant 42.56v would be nice!<br><br>
Chris<br><br>
<br><br>
<br><br>
<br><br>
<br><br>
From: Chad<br>
Northeast <chad@f3acanada.org><br>
To:<br>
nsrca-discussion@lists.nsrca.org<br>
Sent: Sun,<br>
February 28, 2010 8:48:48 PM<br>
Subject: Re:<br>
[NSRCA-discussion] Max volts<br><br>
You would be at about 50% capacity at 3.85 ish volts/cell<br>
(resting open circuit), so unless you up the capacity you<br>
will have a pretty restricted flight time.<br><br>
Chad<br><br>
On 10-02-28 9:25 PM, Ron Van Putte wrote:<br>
<blockquote type=cite class=cite cite="">That stirs a wild thought in my
brain. Fully</blockquote>charged packs don't stay at 4.2 volts per
cell very<br>
long. On the other hand, once the initial charge<br>
voltage is burned off by a constant load, the voltage loss<br>
curve "flattens out". What if you put fully<br>
charged 6S and a 5S packs in series and "burn them<br>
down" to 3.869 volts per cell (a total of 42.56<br>
volts for an 11-cell pack) so they were legal for<br>
use. Would the voltage of this depleted 11S pack be<br>
higher than a fully charged 10S pack at the end of a typical<br>
flight? If the end-of-flight voltage might be<br>
significantly higher for the 11S pack vice a 10S pack, it<br>
would be worth investigating, even considering the extra<br>
weight of the additional cell. Come on you electronic<br>
gurus, show me where I'm wrong.<br>
<blockquote type=cite class=cite cite=""><br>
Ron Van Putte<br><br>
On Feb 28, 2010, at 10:00 PM, James Oddino wrote:<br><br>
<blockquote type=cite class=cite cite="">What comes after ...? Does
it specify a load</blockquote></blockquote>or any other conditions?
Is it measured during the<br>
noise test and have a minimum value?<br>
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite=""><br>
Just stirring the pot, Jim O<br><br>
<br>
On Feb 28, 2010, at 5:21 PM, John Fuqua wrote:<br><br>
<blockquote type=cite class=cite cite="">No its not (assuming we are
talking RC</blockquote></blockquote></blockquote>Aerobatics). Try
page RCA-2 para 4.1<br>
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">which</blockquote></blockquote>
</blockquote>states "Electrically-powered model aircraft are<br>
limited to a maximum<br>
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">of 42.56 volts.."<br><br>
-----Original Message-----<br>
From: nsrca-discussion-bounces@lists.nsrca.org<br>
[<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" eudora="autourl">
mailto:nsrca-discussion-bounces@lists.nsrca.org</a>]</blockquote>
</blockquote></blockquote>On Behalf Of Ron Van Putte<br>
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">Sent: Sunday, February 28, 2010
7:07 PM<br>
To: General pattern discussion<br>
Subject: Re: [NSRCA-discussion] Max volts<br><br>
It's in the general rules, not in the
R/C</blockquote></blockquote></blockquote>section.<br>
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite=""><br><br>
On Feb 28, 2010, at 6:50 PM, Jim Quinn wrote:<br><br>
<blockquote type=cite class=cite cite="">Where can I find the
rule</blockquote></blockquote></blockquote></blockquote>for max
volts?<br>
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite="">
<blockquote type=cite class=cite cite=""><br>
</blockquote></blockquote></blockquote></blockquote>
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<b><i>--></font><font face="Arial, Helvetica" size=3 color="#800000">
There are only two types of aircraft -- fighters and targets.<br><br>
</i></b></font><font size=3>Phil Spelt, Past President, Knox County Radio
Control Society, Inc.<br>
URL:
<a href="http://www.kcrctn.com/" eudora="autourl">
http://www.kcrctn.com<br>
</a>AMA--1294, Scientific Leader Member, SPA--177<br>
My URL:
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http://mywebpages.comcast.net/~chuenkan/<br>
</a> (865) 435-1476 v (865) 604-0541
c </font></body>
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