Today's Message Index:
----------------------
1. 09:26 AM - Re: Rear battery earthing structure (Kent Ogden)
2. 10:11 AM - Re: Rear battery earthing structure (Robert L. Nuckolls, III)
3. 10:23 AM - Re: Re: A brown-out alternative? (Robert L. Nuckolls, III)
4. 10:55 AM - Re: Rear battery earthing structure (Carlos Trigo)
5. 12:32 PM - Re: Rear battery earthing structure (John Tipton)
6. 12:43 PM - Menzimer Aircraft Components 6 A Servo Wiring Diagram Needed (George Nielsen)
7. 03:01 PM - Re: A brown-out alternative? (Eric Page)
Message 1
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Subject: | Re: Rear battery earthing structure |
Bill,
Can I ask where you got the battery busses from in this picture?
http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
Thanks . . .
Kent
>>> Bill Watson <Mauledriver@nc.rr.com> 10/8/2018 4:18 PM >>>
> On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:
At 05:46 PM 10/7/2018, you wrote:
<nwparkinson@btopenworld.com>
( mailto:nwparkinson@btopenworld.com)
Hi Everybody.
Im building an RV8 with a rear battery location.
Can I please have some advice on the earthing structure . Can I just
earth the battery to the structure in the rear , then take it the common
earth at the panel ? Or is it worth running some asw2 cable to earth the
panel , or the engine ??
Ground battery locally
http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
(
http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg)
http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg
(
http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg)
(
http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg)
Install ground bus on firewall.
http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf
(
http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf)
(
http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf)
http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg
( http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg)
Run braided-flat-wire
from crankcase to firewall ground stud.
http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg
(
http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Straps.jpg)
I will have some rear avionics equipment , should I run the earth from
the panel to these ? Or just tap of the structure locally ?
What kind of avionics? Anything with audio or digital
signal leads?
Bob . . .
To OP: I have an RV10 with a 2 rear batteries, a ground bus on firewall
and a braided flat wire from crankcase to firewall ground stud. No
problems (7 years flying)
In addition I have a variety of boxes installed in rear including
Navworx ADSB, strobe unit, Magnetometers (sic), and ELT. I followed the
installation instructions as Bob suggested. No problems.
( https://www.avast.com/antivirus) This email has been checked for
viruses by Avast antivirus software.
www.avast.com
( https://www.avast.com/antivirus)
( #DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2)
Message 2
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Subject: | Re: Rear battery earthing structure |
At 10:04 AM 10/12/2018, you wrote:
>Bill,
>
>Can I ask where you got the battery busses from in this picture?
>
><http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg>http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>
>Thanks . . .
One source of many
https://tinyurl.com/y9sbdo9t
Bob . . .
Message 3
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Subject: | Re: A brown-out alternative? |
At 12:40 AM 10/12/2018, you wrote:
>
>
>Bob Nuckolls wrote:
> > I wired it as shown so that in the milliseconds after start
> switch closure until the contactor closes, the converter has time
> to come up and shoulder the load.
>
>
>That makes perfect sense. My suggestion would have caused the DC/DC
>converter to start up as the bus voltage was sagging, losing the
>time advantage inherent in your schematic.
Good work. Now my concern is that when the starter button
is released, does the boost disappear too soon? i.e. before
the starter contactor releases and unloads the battery?
If this is a demonstrated concern, power to the dc/dc
converter might be simply conditioned with a relay thusly:
Emacs!
The S704 relay will have its own drop-out
characteristic which can be crafted to be
LONGER than the starter contactor. If the diode
alone doesn't offer a suitable delay, replace
it with a capacitor . . . no need to 'tailor'
it to any close tolerance . . . 100mS of
dropout delay would not be out of line.
Bob . . .
Message 4
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Subject: | Re: Rear battery earthing structure |
Kent
I=99m not Bill, but I know that SteinAir has these.
Best
Carlos
Enviado do meu iPhone
No dia 12/10/2018, =C3-s 16:04, Kent Ogden <ogdenk@upstate.edu> escreveu:
> Bill,
>
> Can I ask where you got the battery busses from in this picture?
>
> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>
> Thanks . . .
>
> Kent
> >>> Bill Watson <Mauledriver@nc.rr.com> 10/8/2018 4:18 PM >>>
> >
>> On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:
>> At 05:46 PM 10/7/2018, you wrote:
>>
penworld.com>
>>>
>>> Hi Everybody.
>>> I=C3=A2=82=AC=84=A2m building an RV8 with a rear battery location.
>>> Can I please have some advice on the earthing structure . Can I just ear
th the battery to the structure in the rear , then take it the common earth a
t the panel ? Or is it worth running some asw2 cable to earth the panel , or
the engine ??
>>
>> Ground battery locally
>> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>>
>> =C2=B6
>> http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg
>>
>> Install ground bus on firewall.
>> http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf
>>
>> http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg
>> Run braided-flat-wire
>> from crankcase to firewall ground stud.
>> http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Stra
ps.jpg
>>
>>> I will have some rear avionics equipment , should I run the earth from t
he panel to these ? Or just tap of the structure locally ?
>>
>> What kind of avionics? Anything with audio or digital
>> signal leads?
>> Bob . . .
> To OP: I have an RV10 with a 2 rear batteries, a ground bus on firewall an
d a braided flat wire from crankcase to firewall ground stud. No problems (7
years flying)
> In addition I have a variety of boxes installed in rear including Navworx A
DSB, strobe unit, Magnetometers (sic), and ELT. I followed the installation i
nstructions as Bob suggested. No problems.
>
>
> <IMAGE.png>
> This email has been checked for viruses by Avast antivirus software.
> www.avast.com
>
Message 5
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Subject: | Re: Rear battery earthing structure |
http://www.bandc.aero/fuseholder6-slot.aspx
John
Sent from my iPad
----x--O--x----
> On 12 Oct 2018, at 6:52 pm, Carlos Trigo <trigo@mail.telepac.pt> wrote:
>
> Kent
>
> I=99m not Bill, but I know that SteinAir has these.
>
> Best
> Carlos
>
> Enviado do meu iPhone
>
> No dia 12/10/2018, =C3-s 16:04, Kent Ogden <ogdenk@upstate.edu> escreveu
:
>
>> Bill,
>>
>> Can I ask where you got the battery busses from in this picture?
>>
>> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>>
>> Thanks . . .
>>
>> Kent
>> >>> Bill Watson <Mauledriver@nc.rr.com> 10/8/2018 4:18 PM >>>
>> >
>>> On 10/7/2018 7:22 PM, Robert L. Nuckolls, III wrote:
>>> At 05:46 PM 10/7/2018, you wrote:
>>>
openworld.com>
>>>>
>>>> Hi Everybody.
>>>> I=C3=A2=82=AC=84=A2m building an RV8 with a rear battery location
.
>>>> Can I please have some advice on the earthing structure . Can I just ea
rth the battery to the structure in the rear , then take it the common earth
at the panel ? Or is it worth running some asw2 cable to earth the panel , o
r the engine ??
>>>
>>> Ground battery locally
>>> http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg
>>>
>>> =C2=B6
>>> http://aeroelectric.com/Pictures/Grounding/Local_Battery_Grounds_1.jpg
>>>
>>> Install ground bus on firewall.
>>> http://aeroelectric.com/Pictures/Grounding/Forest_of_Tabs_Ground_Kit.pdf
>>>
>>> http://aeroelectric.com/Pictures/Grounding/gnd_bus.jpg
>>> Run braided-flat-wire
>>> from crankcase to firewall ground stud.
>>> http://aeroelectric.com/Pictures/Grounding/Braided%20Copper%20Bond%20Str
aps.jpg
>>>
>>>> I will have some rear avionics equipment , should I run the earth from t
he panel to these ? Or just tap of the structure locally ?
>>>
>>> What kind of avionics? Anything with audio or digital
>>> signal leads?
>>> Bob . . .
>> To OP: I have an RV10 with a 2 rear batteries, a ground bus on firewall a
nd a braided flat wire from crankcase to firewall ground stud. No problems (
7 years flying)
>> In addition I have a variety of boxes installed in rear including Navworx
ADSB, strobe unit, Magnetometers (sic), and ELT. I followed the installatio
n instructions as Bob suggested. No problems.
>>
>>
>> <IMAGE.png>
>> This email has been checked for viruses by Avast antivirus software.
>> www.avast.com
>>
Message 6
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Subject: | Menzimer Aircraft Components 6 A Servo Wiring Diagram |
Needed
If you know where I can obtain a wiring diagram for a 6 A servo by
Menzimer Aircraft Components of Vista, California please let me know.
Thank you.
George Nielsen
Avid Flyer I-6640
The Hague, the Netherlands
Message 7
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Subject: | Re: A brown-out alternative? |
Bob Nuckolls wrote:
> Now my concern is that when the starter button is released, does the boost disappear
too soon? i.e. before the starter contactor releases and unloads the battery?
The circuit does delay shut-off of the boost converter.
Press start button: boost converter powers on immediately, then after ~100mS delay,
engine starter spins.
Release start button: engine starter stops immediately, then after ~100mS delay,
boost converter shuts off.
The starter-on and booster-off delays are easily customized by adjusting the values
of R4 and R5, respectively.
However, your last drawing is certainly a simpler, lower-parts-count solution!
Ah well, I still enjoyed thinking it through...
Eric
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=483793#483793
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