[NSRCA-discussion] E-deadstick, trouble-shooting.

Thu Jun 9 17:36:25 AKDT 2011

Agree with the “insensitive” setting…tho with pattern I never had an issue with “normal”.

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.

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.

Regards,

Dave

From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Chris
Sent: Thursday, June 09, 2011 5:05 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] E-deadstick, trouble-shooting.

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.

Chris

On 6/9/2011 10:57 AM, Vicente "Vince" Bortone wrote: 

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.  

Vicente "Vince" Bortone

----- Original Message -----
From: "colin chariandy"  <mailto:cchariandy at yahoo.ca> <cchariandy at yahoo.ca>
To: "General pattern discussion"  <mailto:nsrca-discussion at lists.nsrca.org> <nsrca-discussion at lists.nsrca.org>
Sent: Thursday, June 9, 2011 9:41:55 AM
Subject: Re: [NSRCA-discussion] E-deadstick, trouble-shooting.

The losses(heat) is not only dependent on current (I2R) but also Mosfet switching losses. V(in) is a factor in the equations.

Colin

  _____  

From: Keith Hoard  <mailto:khoard at gmail.com> <khoard at gmail.com>
To: General pattern discussion  <mailto:nsrca-discussion at lists.nsrca.org> <nsrca-discussion at lists.nsrca.org>
Sent: Thu, June 9, 2011 9:53:21 AM
Subject: Re: [NSRCA-discussion] E-deadstick, trouble-shooting.

FWIW - I have the CC Ice HV 80 in an Integral, and the data logger
typically shows the temp rising to around 140-150F (60-80 amp draw)
and hovering there for the entire flight.  Castle tech support says
that their controllers don't start throttling back the juice until the
internal temp reaches over 200F.

What I find interesting is that I have the same controller on my
Osiris (5S pack vs. 10S pack) pulling the same 80 amps, but the
controller temp only rises to about 90F on the Osiris.

I haven't downloaded the data from Andersonville, but I didn't see any
power loss all weekend.  I'm sure that if the system was going to
overtemp, it would have happened this last weekend.

Keith Hoard
Collierville, TN
khoard at gmail.com

On Thu, Jun 9, 2011 at 8:36 AM, colin chariandy <cchariandy at yahoo.ca> wrote:
> Got it....I'll add a path for air around the controller.
>
> Thanks
> Colin.
>
> ________________________________
> From: Verne Koester <verne at twmi.rr.com>
> To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
> Sent: Thu, June 9, 2011 9:32:20 AM
> Subject: Re: [NSRCA-discussion] E-deadstick, trouble-shooting.
>
> Yes. My controller is mounted immediately behind the motor and in front of
> the batteries. Air coming in the chin cowl flows over the controller and
> batteries and then goes back out the exit which is two, 7” X 1” exit holes
> in the bottom of the fuse right behind the wing tube. I also have two small
> openings in my cheek cowls that are hopefully feeding the fan in the motor.
> Some of the air from those is probably hitting the controller and batteries
> as well.
>
>
>
> Verne Koester
>
>
>
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of colin
> chariandy
> Sent: Thursday, June 09, 2011 12:28 AM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] E-deadstick, trouble-shooting.
>
>
>
> Mississauga, Ontario.....beat a record high since the 50's.
>
>
>
> Do you guys allow some air to flow from the chin, around the speed
> controller area back into the fuse?
>
>
>
> Colin
>
>
>
> ________________________________
>
> From: Ron Van Putte <vanputte at cox.net>
> To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
> Sent: Wed, June 8, 2011 11:43:00 PM
> Subject: Re: [NSRCA-discussion] E-deadstick, trouble-shooting.
>
> Wow!  34C converts to 93.2F.  What part of Canada was this in?
>
> I agree with Keith.  I run my Jeti 90 on standoffs, using the three mounting
> holes.  Never had a problem, even at Andersonville, GA last weekend, where
> the temperatures were in the upper 90sF.
>
> Ron Van Putte
>
> On Jun 8, 2011, at 10:32 PM, Keith Hoard wrote:
>
>> Sounds like ESC shut down for heat.  Does the Jeti have data logging?
>>
>>
>>
>> Keith Hoard
>> Collierville, TN
>>
>> On Jun 8, 2011, at 21:57, colin chariandy <cchariandy at yahoo.ca> wrote:
>>
>>> Hey guys...I was out practicing tonight when the motor lost all power in
>>> the first upline of the M. Landed the plane deadstick and could find nothing
>>> diconnected so I thought the battery was somehow open circuit. Plugged in
>>> another batt and the controller armed and ran the motor normally.
>>> Re-installed the previous batt and again all was OK.  I flew the plane on
>>> the same battery the failure occured with and there were no re-occurences
>>> but I was way too uncomfortable to really concentrate.
>>>
>>> It was 34C when I took off....the hottest I have ever flown that plane
>>> and I did have the controller velcroed in place in the chin with foam under
>>> it to prevent movement....not the coolest set-up.
>>>
>>> The plane is a Xigris, motor is the 30-10 evo and a Jeti 90 speed
>>> controller, JR Rx.
>>>
>>> Any trouble shooting advice? Do the Jetis have a thermal shut down?
>>>
>>> I did change the speed controller mounting to use the three screws
>>> instead of velcro.
>>>
>>> Colin
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
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