Today's Message Index:
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1. 07:31 AM - Aft Battery (Dan Beadle)
2. 03:47 PM - Re: Aft Battery (Searle, Alan)
3. 04:05 PM - Re: Aft Battery (MLWynn@aol.com)
4. 06:32 PM - Re: Aft Battery (Richard McBride)
Message 1
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--> RV8-List message posted by: "Dan Beadle" <Dan.Beadle@hq.InclineSoftworks.com>
I am going to mount the battery in my RV8 aft of the baggage area. Vans
wiring kit suggests airframe grounding. Bob Knuckles Z Diagrams
recommend a separate (but heavy) ground cable from the battery to the
engine mount. =20
=20
I am considering a separate ground run. I am also considering a
separate ground for accessories (strobes, Nav, landing lights, pitot,
etc.)=20
=20
Is this worth the extra weight? What are other builders doing?=20
=20
I was burned by the lack of a ground run in my StormScope installation
in another airplane, but don't intend to have one in this airplane. So
am I being overly cautious at the expense of precious payload?
Message 2
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--> RV8-List message posted by: "Searle, Alan" <searle@mansfield.net.au>
Hi Dan,
On my almost completed RV8,I have the rear battery and have run a separate
ground cable to the firewall. My suggestion is to do the same, especially
if you intend to use a 17 AH battery like the oddessy.
Cheers ..... Alan Searle ..... Australia.
Dan Beadle writes:
> --> RV8-List message posted by: "Dan Beadle" <Dan.Beadle@hq.InclineSoftworks.com>
>
> I am going to mount the battery in my RV8 aft of the baggage area. Vans
> wiring kit suggests airframe grounding. Bob Knuckles Z Diagrams
> recommend a separate (but heavy) ground cable from the battery to the
> engine mount. =20
>
> =20
>
> I am considering a separate ground run. I am also considering a
> separate ground for accessories (strobes, Nav, landing lights, pitot,
> etc.)=20
>
> =20
>
> Is this worth the extra weight? What are other builders doing?=20
>
> =20
>
> I was burned by the lack of a ground run in my StormScope installation
> in another airplane, but don't intend to have one in this airplane. So
> am I being overly cautious at the expense of precious payload?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Message 3
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--> RV8-List message posted by: MLWynn@aol.com
Hey, Alan
What do you suppose the weight penalty is for the cable runs? I am building
an RV 8, was planning to use dual batteries and am trying to figure out
where to put them. I understand that RV 8's have a tendency to be nose heavy,
especially with a CS prop. It certainly looks like running a ground to the
engine would be a good idea. I suppose if you put both batteries behind the
back seat you could run one big ground and two hot lines. Just curious about
the weight penalty involved.
Regards.
Michael Wynn
RV 8 Wings (tanks)
San Ramon, CA
Message 4
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--> RV8-List message posted by: "Richard McBride" <rickrv8@msn.com>
I designed my electrical system in my -8 based upon Bob's =
recommendations. I am using two Odyssey batteries mounted in the back =
primary for the dual electronic ignition. Contrary to Bob's advice to =
ground at the firewall, I grounded both batteries to the nearby =
longerons. Operationally, the electrical system has worked fine and I =
have experienced no noise in the communication radios or other avionics.
Rick McBride=20
----- Original Message -----=20
From: MLWynn@aol.com<mailto:MLWynn@aol.com>=20
To: rv8-list@matronics.com<mailto:rv8-list@matronics.com>=20
Sent: Friday, May 26, 2006 7:04 PM
Subject: Re: RV8-List: Aft Battery
--> RV8-List message posted by: MLWynn@aol.com<mailto:MLWynn@aol.com>
Hey, Alan
=20
What do you suppose the weight penalty is for the cable runs? I am =
building=20
an RV 8, was planning to use dual batteries and am trying to figure =
out =20
where to put them. I understand that RV 8's have a tendency to be =
nose heavy,=20
especially with a CS prop. It certainly looks like running a ground =
to the=20
engine would be a good idea. I suppose if you put both batteries =
behind the=20
back seat you could run one big ground and two hot lines. Just =
curious about=20
the weight penalty involved.
=20
Regards.
=20
Michael Wynn
RV 8 Wings (tanks)
San Ramon, CA
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