Today's Message Index:
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1. 11:13 AM - Re: Super-whizzy energy management systems (johnbright)
2. 11:18 AM - Re: Super-whizzy energy management systems (blues750)
3. 11:39 AM - Re: Re: Super-whizzy energy management systems (Gilles Thesee)
4. 04:59 PM - Re: Re: Super-whizzy energy management systems (Robert L. Nuckolls, III)
5. 06:07 PM - Test (Neal George)
6. 07:02 PM - Re: AEC Logo (Stuart Hutchison)
7. 07:43 PM - Re: Test (Lyle Peterson)
Message 1
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| Subject: | Re: Super-whizzy energy management systems |
gilles(at)elixir-aircraft wrote:
> Found some schematic and installation instructions here:
>
> ... flyefii.com/media/Bus_Manager_Installation_Instructions.pdf
>
> --
> Best regards,
> Gilles
EFII has an updated Bus Manager installation instruction. I have not studied it
in detail but I see they eliminated one of the SPOFs in the fuel pump wiring,
Dwg 3B.
https://www.flyefii.com/media/Bus-Manager-Installation-Instructions-1-6-20.pdf
--------
John Bright, RV-6A, at FWF, O-360
Single batt dual alt SDS EM-5-F.
john_s_bright@yahoo.com, Newport News, Va
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496142#496142
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| Subject: | Re: Super-whizzy energy management systems |
Great discussion so far...hits close to home as I have a similar configuration
on my EAB though I have incorporated OVP and a disconnect from the PMA. Additionally,
the two EarthX batteries I have (ETX Hundred Series) are of the more
recent BMS design which does not cut off available battery energy to systems,
but does limit the charging current to the battery if the battery start receiving
too much. I think Mr Kuss brings up a valid point regarding failure of the
internal diodes, though both diodes would have to fail to prevent either battery
from providing power to the essential bus via the switch. I cannot say that
the designer of the Bus Manager failed at making a "safe system" - how robust
are the components? Is the design flawed? Obviously, highly interested in
the overall discussion. Dave
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496143#496143
Message 3
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| Subject: | Re: Super-whizzy energy management systems |
Le 30/04/2020 20:13, blues750 a crit:
> I think Mr Kuss brings up a valid point regarding failure of the internal diodes,
though both diodes would have to fail to prevent either battery from providing
power to the essential bus via the switch. I cannot say that the designer
of the Bus Manager failed at making a "safe system" - how robust are the components?
Is the design flawed?
Hi all,
Personnally I would prefer a means of disconnecting the alternator(s)
from the ship, and wire the emergency power switch direct from the
backup battery.
BTW, maybe I'm missing the obvious, but what is the point of having two
batteries if they always connect and disconnect together, albeit through
some diode array (part-count counts) ?
--
Best regards,
Gilles
http://contrails.free.fr
Message 4
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| Subject: | Re: Super-whizzy energy management systems |
>BTW, maybe I'm missing the obvious, but what is the point of having
>two batteries if they always connect and disconnect together, albeit
>through some diode array (part-count counts) ?
Do ya think? It seems that having two
batteries is an admission to lack of confidence
in the maintenance of your battery(ies)
The top dogs in SVLA batteries produce
very consistent products on highly
automated production lines. Consistency
of performance and mechanical robustness
is excellent. The weakest link in a battery's
ability to perform is chemistry. They will
only 'cycle' so many times. Further, the
chemistry can be abused in ways that does
not immediately manifest in an observable
drop in performance.
I would have much more confidence in one,
well maintained SVLA battery than in any
pair of batteries that don't get replaced
until the engine doesn't start.
This is the reason for periodic checks
for suitability for flight. This means
that a battery gets pulled BEFORE it
quits cranking the engine but after
it fails minimum capacity for battery-only
operations.
Another problem with the diode bridge -ored-
batteries, how do you know if all the diodes
are performing as intended? There's no way
to preflight all the functions of that
box.
Integrity of any power steering diode in the
Z-figures is pre-flight testable.
Bob . . .
Message 5
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Neal George
Sent from my iPhone
Message 6
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Could John Tipton please e-mail me directly about the draft AEC logo - thank you!
Mailto:stuart@stuarthutchison.com.au
V/r Stuart
> On 30 Apr 2020, at 7:54 am, jdpnm <jdp3322@gmail.com> wrote:
>
>
> Looks Good. You might want to move the 'onecction" closer to the "C"
>
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>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=496132#496132
>
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Message 7
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You passed!
On 4/30/2020 8:03 PM, Neal George wrote:
>
>
> Neal George
> Sent from my iPhone
>
>
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