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Yes, exactly! the 30V setting was back in Pro Lite V1 days and I
kept it based on the theory that you can feel the performance drop
before you get to critical voltage anyways and can decide to land
before it sags too far vs hitting LVC and letting the controller
decide to cut off motor power temporarily as a hint . In the end, I
would rather puff a $300 pack then crash a $3000 plane should a hard
LVC happen at the wrong place/time. But I agree completely that a
32V LVC setting is adequate now with higher C batteries.<br>
<br>
Chris<br>
<br>
On 6/9/2011 9:36 PM, Dave Lockhart wrote:
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<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">Agree with the “insensitive” setting…tho with
pattern I never had an issue with “normal”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">30 volts is very low for the current day high C
lipos – not going to be much left if the lipo gets down to
30V. If you actually had the low voltage cutoff kick in at
30V, expect you’ve done some serious damage to the lipo.
Back in the day of 13C lipos, on a really cold day, with a
very aggressive setup (ie, 20C peaks), voltage dropping to
30V under load at the end of a flight could happen, but
still not likely.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">I’ve crept up the LVC setting on my pattern stuff
to 3.2v per cell….still low for the modern lipos, but might
kick in at 95% discharged instead of 99% discharged.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><br>
Dave<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family:
"Calibri","sans-serif"; color: rgb(31,
73, 125);"><o:p> </o:p></span></p>
<div>
<div style="border-right: medium none; border-width: 1pt
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padding: 3pt 0in 0in;">
<p class="MsoNormal"><b><span style="font-size: 10pt;
font-family:
"Tahoma","sans-serif"; color:
windowtext;">From:</span></b><span style="font-size:
10pt; font-family:
"Tahoma","sans-serif"; color:
windowtext;"> <a class="moz-txt-link-abbreviated" href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</a>
[<a class="moz-txt-link-freetext" href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>] <b>On
Behalf Of </b>Chris<br>
<b>Sent:</b> Thursday, June 09, 2011 5:05 PM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] E-deadstick,
trouble-shooting.<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">A Castle Tech told me that we want to set
the current limiting to "insensitive" to avoid any false cut
outs caused my momentary voltage drops. Along with that, you
should hard set the cell count via the min voltage to 30V for
a 10S setup. This has worked for lots and lots of us for many
years with the Castle controllers.<br>
<br>
Chris<br>
<br>
On 6/9/2011 10:57 AM, Vicente "Vince" Bortone wrote: <o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-bottom: 12pt;"><span
style="font-family:
"Arial","sans-serif";">I don't recall
how CC call it. There is a setting for current slope or
ramp. If you have it too sensitive the controller could
shot down when you power up the plane in long vertical
maneuvers. I didn't follow all the e-mails but this
happen to me one time with a CC controller. <br>
<br>
Vicente "Vince" Bortone<br>
<br>
----- Original Message -----<br>
From: "colin chariandy" <a moz-do-not-send="true"
href="mailto:cchariandy@yahoo.ca"><cchariandy@yahoo.ca></a><br>
To: "General pattern discussion" <a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org"><nsrca-discussion@lists.nsrca.org></a><br>
Sent: Thursday, June 9, 2011 9:41:55 AM<br>
Subject: Re: [NSRCA-discussion] E-deadstick,
trouble-shooting.<o:p></o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span style="font-family:
"Arial","sans-serif";">The
losses(heat) is not only dependent on current (I2R)
but also Mosfet switching losses. V(in) is a factor in
the equations.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:
"Arial","sans-serif";"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:
"Arial","sans-serif";">Colin<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-family:
"Arial","sans-serif";"><o:p> </o:p></span></p>
<div>
<div class="MsoNormal" style="text-align: center;"
align="center"><span style="font-size: 10pt;
font-family:
"Tahoma","sans-serif";">
<hr width="100%" align="center" size="1"></span></div>
<p class="MsoNormal"><b><span style="font-size: 10pt;
font-family:
"Tahoma","sans-serif";">From:</span></b><span
style="font-size: 10pt; font-family:
"Tahoma","sans-serif";"> Keith
Hoard <a moz-do-not-send="true"
href="mailto:khoard@gmail.com"><khoard@gmail.com></a><br>
<b>To:</b> General pattern discussion <a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org"><nsrca-discussion@lists.nsrca.org></a><br>
<b>Sent:</b> Thu, June 9, 2011 9:53:21 AM<br>
<b>Subject:</b> Re: [NSRCA-discussion] E-deadstick,
trouble-shooting.<br>
</span><span style="font-size: 10pt; font-family:
"Arial","sans-serif";"><br>
FWIW - I have the CC Ice HV 80 in an Integral, and
the data logger<br>
typically shows the temp rising to around 140-150F
(60-80 amp draw)<br>
and hovering there for the entire flight. Castle
tech support says<br>
that their controllers don't start throttling back
the juice until the<br>
internal temp reaches over 200F.<br>
<br>
What I find interesting is that I have the same
controller on my<br>
Osiris (5S pack vs. 10S pack) pulling the same 80
amps, but the<br>
controller temp only rises to about 90F on the
Osiris.<br>
<br>
I haven't downloaded the data from Andersonville,
but I didn't see any<br>
power loss all weekend. I'm sure that if the system
was going to<br>
overtemp, it would have happened this last weekend.<br>
<br>
Keith Hoard<br>
Collierville, TN<br>
<a moz-do-not-send="true"
href="mailto:khoard@gmail.com" target="_blank">khoard@gmail.com</a><br>
<br>
<br>
<br>
<br>
<br>
On Thu, Jun 9, 2011 at 8:36 AM, colin chariandy <<a
moz-do-not-send="true"
href="mailto:cchariandy@yahoo.ca" target="_blank">cchariandy@yahoo.ca</a>>
wrote:<br>
> Got it....I'll add a path for air around the
controller.<br>
><br>
> Thanks<br>
> Colin.<br>
><br>
> ________________________________<br>
> From: Verne Koester <<a
moz-do-not-send="true"
href="mailto:verne@twmi.rr.com" target="_blank">verne@twmi.rr.com</a>><br>
> To: General pattern discussion <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org"
target="_blank">nsrca-discussion@lists.nsrca.org</a>><br>
> Sent: Thu, June 9, 2011 9:32:20 AM<br>
> Subject: Re: [NSRCA-discussion] E-deadstick,
trouble-shooting.<br>
><br>
> Yes. My controller is mounted immediately
behind the motor and in front of<br>
> the batteries. Air coming in the chin cowl
flows over the controller and<br>
> batteries and then goes back out the exit which
is two, 7” X 1” exit holes<br>
> in the bottom of the fuse right behind the wing
tube. I also have two small<br>
> openings in my cheek cowls that are hopefully
feeding the fan in the motor.<br>
> Some of the air from those is probably hitting
the controller and batteries<br>
> as well.<br>
><br>
><br>
><br>
> Verne Koester<br>
><br>
><br>
><br>
> From: <a moz-do-not-send="true"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org"
target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a><br>
> [mailto:<a moz-do-not-send="true"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org"
target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a>]
On Behalf Of colin<br>
> chariandy<br>
> Sent: Thursday, June 09, 2011 12:28 AM<br>
> To: General pattern discussion<br>
> Subject: Re: [NSRCA-discussion] E-deadstick,
trouble-shooting.<br>
><br>
><br>
><br>
> Mississauga, Ontario.....beat a record high
since the 50's.<br>
><br>
><br>
><br>
> Do you guys allow some air to flow from the
chin, around the speed<br>
> controller area back into the fuse?<br>
><br>
><br>
><br>
> Colin<br>
><br>
><br>
><br>
> ________________________________<br>
><br>
> From: Ron Van Putte <<a
moz-do-not-send="true"
href="mailto:vanputte@cox.net" target="_blank">vanputte@cox.net</a>><br>
> To: General pattern discussion <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org"
target="_blank">nsrca-discussion@lists.nsrca.org</a>><br>
> Sent: Wed, June 8, 2011 11:43:00 PM<br>
> Subject: Re: [NSRCA-discussion] E-deadstick,
trouble-shooting.<br>
><br>
> Wow! 34C converts to 93.2F. What part of
Canada was this in?<br>
><br>
> I agree with Keith. I run my Jeti 90 on
standoffs, using the three mounting<br>
> holes. Never had a problem, even at
Andersonville, GA last weekend, where<br>
> the temperatures were in the upper 90sF.<br>
><br>
> Ron Van Putte<br>
><br>
> On Jun 8, 2011, at 10:32 PM, Keith Hoard wrote:<br>
><br>
>> Sounds like ESC shut down for heat. Does
the Jeti have data logging?<br>
>><br>
>><br>
>><br>
>> Keith Hoard<br>
>> Collierville, TN<br>
>><br>
>> On Jun 8, 2011, at 21:57, colin chariandy
<<a moz-do-not-send="true"
href="mailto:cchariandy@yahoo.ca" target="_blank">cchariandy@yahoo.ca</a>>
wrote:<br>
>><br>
>>> Hey guys...I was out practicing tonight
when the motor lost all power in<br>
>>> the first upline of the M. Landed the
plane deadstick and could find nothing<br>
>>> diconnected so I thought the battery
was somehow open circuit. Plugged in<br>
>>> another batt and the controller armed
and ran the motor normally.<br>
>>> Re-installed the previous batt and
again all was OK. I flew the plane on<br>
>>> the same battery the failure occured
with and there were no re-occurences<br>
>>> but I was way too uncomfortable to
really concentrate.<br>
>>><br>
>>> It was 34C when I took off....the
hottest I have ever flown that plane<br>
>>> and I did have the controller velcroed
in place in the chin with foam under<br>
>>> it to prevent movement....not the
coolest set-up.<br>
>>><br>
>>> The plane is a Xigris, motor is the
30-10 evo and a Jeti 90 speed<br>
>>> controller, JR Rx.<br>
>>><br>
>>> Any trouble shooting advice? Do the
Jetis have a thermal shut down?<br>
>>><br>
>>> I did change the speed controller
mounting to use the three screws<br>
>>> instead of velcro.<br>
>>><br>
>>> Colin<br>
>>><br>
>>><br>
>>><br>
>>><br>
>>>
_______________________________________________<br>
>>> NSRCA-discussion mailing list<br>
>>> <a moz-do-not-send="true"
href="mailto:NSRCA-discussion@lists.nsrca.org"
target="_blank">NSRCA-discussion@lists.nsrca.org</a><br>
>>> <a moz-do-not-send="true"
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
>>
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>> NSRCA-discussion mailing list<br>
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<pre><o:p> </o:p></pre>
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