Today's Message Index:
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1. 11:18 AM - Re: Re: RV10 primary elec sys wiring (Richard Gurley)
2. 12:27 PM - Re: Re: RV10 primary elec sys wiring (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: RV10 primary elec sys wiring |
Bob -
For an RV 10 with a rear battery, I would like a rear ground bus in addition
to a firewall ground bus. Is it OK to run a negative wire from the battery
to the rear ground bus and then forward to the firewall ground buss?
Thank you
Dick
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: Saturday, July 25, 2020 9:54 PM
Subject: AeroElectric-List: Re: RV10 primary elec sys wiring
At 09:57 AM 7/23/2020, you wrote:
Good day Dear Mr.Nuckolls,
First, i really happy that i've met your book and web site with plenty of
extra useful information.I am aircraft maintenance engineer (mostly Boeing
type rated), have practical and theoretical skills. but realized that need
some more theoretical researches for better elec system knowledge.
Those fundamentals will serve you well in your
new aviation endeavors. Your sense of craftsmanship
and knowledge of 'how the other guys do it' will
be useful.
Recently friend of mine asked me to help with his RV-10 electrical and
avionics hookup. Most of works are done except all wiring work. I spent many
hours doing research and stuck...we have perhaps unusual config with one
regular battery(RG-25XC)with Batteryminder charging kit BM-AIK2A, just one
primary alternator Plane Power 99-1012 with built-in voltage regulator
(unfortunately) and small cmart backup battery TCW IBBA-12v-6AH. Ignition -
Champion slick magnetos (6393 and 6350) , lefthand one with SS1001 booster.
You don't mention how this airplane will be used.
Day VFR, Day/Nite VFR, 'hard' IFR, extended flight
over unfriendly terrain? What avionics are anticipated?
Which devices will exploit the back-up battery?
Despite I am professional avionic I am really stuck and frustrated in
myself...
You've come to the right place. I've taken the liberty
of signing you up as a participant on the AeroElectric-List.
We are a 'members only' consortium of aviation enthusiasts with
broad range of experience and skills. We strive for elegant
solutions based on good science.
When you receive the invitation to join us, just respond in
the affirmative and you'll be 'plugged in' to one of the
most comprehensive electrical/avionics communities on the
'net'.
Could you please, advise where can i find help with backbone elec system
architecture and etc...guys want to fly in couple of months))))
We're pleased to help. Tell us more about the project.
At firsts blush, your architecture requirements may
be exceedingly simple. Stand alone magnetos. Simple
one battery/one alternator configuration not unlike
hundreds of thousands of type certificated aircraft
that have flown successfully for a century. The
greatest difference will be the lack of an 'avionics
bus' and associated master switch. That concept was
hatched with poor understanding of then-brand-new
solid state avionics. The value of the avionics master
was limited from the beginning then and has no
value today.
Based on what we know now, your shared details may
prompt further suggestions. I've posted a 'first
pass on an architecture we're evolving here
on the AeroElectric-List. It shows an endurance
bus (common to single alternator designs), battery
bus and a brown-out booster. You may not need
any of these things we'll help you figure it out.
See: https://tinyurl.com/y6ku7lbh
Thank you again for your great work and support of aviation community!
You're most welcome my friend . . . it's what we do
here.
Bob . . .
Message 2
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| Subject: | Re: RV10 primary elec sys wiring |
At 01:13 PM 8/14/2020, you wrote:
>Bob '
>
>For an RV 10 with a rear battery, I would like a
>rear ground bus in addition to a firewall ground
>bus. Is it OK to run a negative wire from the
>battery to the rear ground bus and then forward to the firewall ground
buss?
>
>Thank you
>
>Dick
Not necessary. Ground batteries locally to structure
https://tinyurl.com/n9rgrg8
https://tinyurl.com/y5c8qejs
https://tinyurl.com/y3chtcmh
Add some ground studs to any fabricated
brackets utilized in grounding batteries
to accommodate aft grounds.
Install firewall ground bus normally.
Be sure to included crankcase to thru-
bolt braided strap or 2AWG welding
cable.
Bob . . .
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