Today's Message Index:
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1. 07:07 AM - Re: IBBS backup battery vs backup alt? (user9253)
2. 07:07 AM - Re: IBBS backup battery vs backup alt? (Robert L. Nuckolls, III)
3. 07:42 AM - Re: Figure Z-13/20 all electric airplane with 20 amp E-bus (Robert L. Nuckolls, III)
4. 07:58 AM - Re: IBBS backup battery vs backup alt? (Andy)
5. 08:07 AM - Re: IBBS backup battery vs backup alt? (Andy)
6. 08:08 AM - Re: Figure Z-13/20 all electric airplane with 20 amp E-bus (Andy)
7. 09:16 AM - Re: IBBS backup battery vs backup alt? (Robert L. Nuckolls, III)
8. 09:17 AM - Re: Figure Z-13/20 all electric airplane with 20 amp E-bus (Robert L. Nuckolls, III)
9. 09:40 AM - Re: Figure Z-13/20 all electric airplane with 20 amp E-bus (Andy)
Message 1
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Subject: | Re: IBBS backup battery vs backup alt? |
Many alternators will continue to operate after the battery has been disconnected.
Testing on the ground will determine if your alternators behave this way.
Chances are that the pilot will be unaware of a master contactor failure, because
the alternator and electrical loads will continue to operate normally.
The pilot might not realize the master contactor has failed until the next attempt
to start the engine.
Dual alternators are desirable for those who wish to continue flying for an extended
time period after the main alternator fails. For many pilots, a second
alternator is unnecessary weight, cost, and complexity. The aircraft battery
will supply electrical power until landing.
An avionics backup battery is not required because the aircraft battery provides
backup power through the E-Bus circuit.
In the event of a fire or an imminent crash, the pilot should have the ability
to shut off all electrical power as close to the source as possible. A long
wire from the battery to the aux alternator does not meet this requirement.
Joe
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=394198#394198
Message 2
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Subject: | Re: IBBS backup battery vs backup alt? |
At 08:19 PM 2/12/2013, you wrote:
>
>Rv7 aircraft with a 2 screen G3X-single electronic ignition-Audio
>panel-GTN650-transponder-TruTrak Gemini-G3X auto pilot.
>
>DiagramZ-12 if the master relay fails then the aux alt doesn't
>charge the system?
Correct. Z-12 was crafted for adding aux alternator
to airplanes already configured with a legacy architecture.
This is how the SD-20 has been ADDED to hundreds of
type certificated aircraft.
> Can the B lead from the aux alt connect at the + side of the
> master relay to charge the system and supply aux alt power to batt
> bus and e-bus?
>
>Diagram Z-11 with a IBBS battery backup for G3X versus Z-12?
>
>Price wise it's not much more for the single batt dual alt, how to
>supply uninterrupted power to the G3X if a electrical system failure
>occurs without IBBS backup battery?
Have you already purchased an SD-20? This alternator
is way too big as standby for 99% of OBAM aircaft.
Figure Z-13/8 was crafted as a two-layer system
that is lighter, less expensive and addresses your
concerns.
Bob . . .
Message 3
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Subject: | Re: Figure Z-13/20 all electric airplane with 20 |
amp E-bus
At 09:19 PM 2/12/2013, you wrote:
>
>In order to keep uninterrupted power to the E-bus in figureZ-13/20,
>you operate the system with the E-bus/alt master switch in the
>middle (on) or top (on on)?
Z-13/20 was withdrawn from the website after
I became personally dissatisfied with the
idea. Z-13/8 is my personal choice for
an inexpensive, lightweight, robust and
very reliable 2-alternator installation
for light aircraft.
If you already have an SD-20 and are inclined
to incorporate Z-13/20 . . . it will probably
perform as advertised.
Bob . . .
Message 4
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Subject: | Re: IBBS backup battery vs backup alt? |
Thanks for the replies! I haven't purchased either yet but am trying to decide
between the Z diagram with the SD8 dynamo and using an avionics buss with a relay
and a IBBS battery backup.
Still trying to figure out how to wire the G3X system to the Zdiagram to allow
uninterrupted power.
Sent from my iPhone
On Feb 13, 2013, at 9:07 AM, "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
wrote:
>
> At 08:19 PM 2/12/2013, you wrote:
>>
>> Rv7 aircraft with a 2 screen G3X-single electronic ignition-Audio panel-GTN650-transponder-TruTrak
Gemini-G3X auto pilot.
>>
>> DiagramZ-12 if the master relay fails then the aux alt doesn't charge the system?
>
> Correct. Z-12 was crafted for adding aux alternator
> to airplanes already configured with a legacy architecture.
> This is how the SD-20 has been ADDED to hundreds of
> type certificated aircraft.
>
>> Can the B lead from the aux alt connect at the + side of the master relay to
charge the system and supply aux alt power to batt bus and e-bus?
>>
>> Diagram Z-11 with a IBBS battery backup for G3X versus Z-12?
>>
>> Price wise it's not much more for the single batt dual alt, how to supply uninterrupted
power to the G3X if a electrical system failure occurs without IBBS
backup battery?
>
> Have you already purchased an SD-20? This alternator
> is way too big as standby for 99% of OBAM aircaft.
> Figure Z-13/8 was crafted as a two-layer system
> that is lighter, less expensive and addresses your
> concerns.
>
>
> Bob . . .
>
>
>
>
Message 5
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Subject: | Re: IBBS backup battery vs backup alt? |
I think I need a new addition of the "connection," referencing Z13/8 can provide
uninterrupted power to G3x by operating with the alt ebus feed on and G3x wired
to ebus. Essentially he ebus would always run from the Batt side of the master
relay through the alt ebus switch making it more of an always on ebus switch.
I'm mostly thinking out loud to try and understand it better. Thoughts and
advice appreciated!
Thanks
Andy
Sent from my iPhone
On Feb 13, 2013, at 9:07 AM, "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
wrote:
>
> At 08:19 PM 2/12/2013, you wrote:
>>
>> Rv7 aircraft with a 2 screen G3X-single electronic ignition-Audio panel-GTN650-transponder-TruTrak
Gemini-G3X auto pilot.
>>
>> DiagramZ-12 if the master relay fails then the aux alt doesn't charge the system?
>
> Correct. Z-12 was crafted for adding aux alternator
> to airplanes already configured with a legacy architecture.
> This is how the SD-20 has been ADDED to hundreds of
> type certificated aircraft.
>
>> Can the B lead from the aux alt connect at the + side of the master relay to
charge the system and supply aux alt power to batt bus and e-bus?
>>
>> Diagram Z-11 with a IBBS battery backup for G3X versus Z-12?
>>
>> Price wise it's not much more for the single batt dual alt, how to supply uninterrupted
power to the G3X if a electrical system failure occurs without IBBS
backup battery?
>
> Have you already purchased an SD-20? This alternator
> is way too big as standby for 99% of OBAM aircaft.
> Figure Z-13/8 was crafted as a two-layer system
> that is lighter, less expensive and addresses your
> concerns.
>
>
> Bob . . .
>
>
>
>
Message 6
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Subject: | Re: Figure Z-13/20 all electric airplane with 20 |
amp E-bus
I don't have the SD-20, and I think the SD-8 foots the bill much better.
Sent from my iPhone
On Feb 13, 2013, at 9:41 AM, "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
wrote:
>
> At 09:19 PM 2/12/2013, you wrote:
>>
>> In order to keep uninterrupted power to the E-bus in figureZ-13/20, you operate
the system with the E-bus/alt master switch in the middle (on) or top (on
on)?
>
> Z-13/20 was withdrawn from the website after
> I became personally dissatisfied with the
> idea. Z-13/8 is my personal choice for
> an inexpensive, lightweight, robust and
> very reliable 2-alternator installation
> for light aircraft.
>
> If you already have an SD-20 and are inclined
> to incorporate Z-13/20 . . . it will probably
> perform as advertised.
>
>
>
> Bob . . .
>
>
>
>
Message 7
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Subject: | Re: IBBS backup battery vs backup alt? |
At 10:06 AM 2/13/2013, you wrote:
>
>I think I need a new addition of the "connection," referencing Z13/8
>can provide uninterrupted power to G3x by operating with the alt
>ebus feed on and G3x wired to ebus. Essentially he ebus would always
>run from the Batt side of the master relay through the alt ebus
>switch making it more of an always on ebus switch. I'm mostly
>thinking out loud to try and understand it better. Thoughts and
>advice appreciated!
>Thanks
>Andy
All the latest updates are on the website at:
http://tinyurl.com/5wxzn7
Bob . . .
Message 8
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Subject: | Re: Figure Z-13/20 all electric airplane with 20 |
amp E-bus
At 10:08 AM 2/13/2013, you wrote:
>
>I don't have the SD-20, and I think the SD-8 foots the bill much better.
If I were still in the TC aircraft business
and charged with proposing the 'elegant solution'
to a light aircraft system and legacy engine (with
available drive pad) then Z-13/8 would be it.
It's a two layer system with reliability numbers
unequaled in most of the GA aviation fleet.
Bob . . .
Message 9
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Subject: | Re: Figure Z-13/20 all electric airplane with 20 |
amp E-bus
Thank you for all of your time patience and energy! The electrical system architecture
stuff is pretty cool!
Sent from my iPhone
On Feb 13, 2013, at 11:17 AM, "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
wrote:
>
> At 10:08 AM 2/13/2013, you wrote:
>>
>> I don't have the SD-20, and I think the SD-8 foots the bill much better.
>
> If I were still in the TC aircraft business
> and charged with proposing the 'elegant solution'
> to a light aircraft system and legacy engine (with
> available drive pad) then Z-13/8 would be it.
>
> It's a two layer system with reliability numbers
> unequaled in most of the GA aviation fleet.
>
>
>
> Bob . . .
>
>
>
>
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