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Dual battery -CG

 
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Deems Davis



Joined: 09 Jan 2006
Posts: 925
PostPosted: Fri Nov 30, 2007 9:57 pm    Post subject: Dual battery -CG Reply with quote
Just be aware, that the -10 is already Nose Heavy, and placing another
battery fwd of the CG is probably not going to help.

Deems

Vernon Smith wrote:
[quote] Bill,

This is exactly what I was looking for or something close to it.
Originally, I was planning on two equal sized batteries behind the
luggage area, but just didn't need that kind of capacity or weight in
an Aux battery. Plus I like the idea of the shorter power leads with
it mounted near the panel.

Thanks,

Vern
do not archive

------------------------------------------------------------------------
From: billschlatterer(at)sbcglobal.net
To: rv10-list(at)matronics.com
Subject: RE: Dual battery
Date: Fri, 30 Nov 2007 20:14:10 -0600

Vern, this is in my 7 but the same concept probably works in the
10. Battery is suspended directly under the AHRS. The bus right
beside it is the Aux Bat which feeds separate switches for the
EFIS which allows it to be powered on before/while starting or in
an emergency but disconnected from the main bus. The Aux Bat also
charges from the main bus during normal operations through a D25
diode. As I remember it, the battery is a Panasonic P212 (7ah)
recommended on the AE list.

Hope this helps.

Bill S
7a finishing

------------------------------------------------------------------------
*From:* owner-rv10-list-server(at)matronics.com
[mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of
*Vernon Smith
*Sent:* Friday, November 30, 2007 10:43 AM
*To:* rv10-list(at)matronics.com
*Subject:* RE: Dual battery

Has anyone come up with a way to mount a 7ah battery up under the
insturment panel or on the backside of the firewall? One of the
smaller gel cells used in alarm systems seems like a nice backup
battery for the EFIS system.

Vern Smith (#324 doors & cabin top)


------------------------------------------------------------------------

> From: william(at)gbta.net
> To: rv10-list(at)matronics.com
> Subject: Re: Dual battery
> Date: Fri, 30 Nov 2007 08:24:58 -0600
>
>
<william(at)gbta.net>
>
> Thanks for the information and pictures on the Battery/trays.
Bob, I really
> like the looks of that accessories tray that you built. If you
get some
> pictures of it please let me know. This would be a good time to
work
> something like that into my build. As for the battery tray
dimensions, I
> think I'll probably go with PC680s. The length is 7.27" and the
width is
> 3.11". Do I need to buy the batteries and build the box to exact
dimensions
> of the 2 batteries or is it acceptable to just build the tray
maybe 1/4"
> larger on each side so that I know the batteries will fit later
on when I
> get them.
>
> Thanks again for all the input,
> Bill Britton
>
>
> ---

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planesmith(at)hotmail.com
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PostPosted: Fri Nov 30, 2007 11:40 pm    Post subject: Dual battery -CG Reply with quote
The battery up front would weigh only 5 lbs. and will hopefully be counter balanced by the main battery in the tail which will be an Odyssey PC925 weighing in about 3 lbs heaver than the OEM Concord. Also my planned panel is stock Van's and fairly sparse. However, if it need to go in the tail for CG it can go in the tail.

Vern



> Date: Fri, 30 Nov 2007 22:57:21 -0700
[quote] From: deemsdavis(at)cox.net
To: rv10-list(at)matronics.com
Subject: Re: Dual battery -CG

--> RV10-List message posted by: Deems Davis <deemsdavis(at)cox.net>

Just be aware, that the -10 is already Nose Heavy, and placing another
battery fwd of the CG is probably not going to help.

Deems

Vernon Smith wrote:
> Bill,
>
> This is exactly what I was looking for or something close to it.
> Originally, I was planning on two equal sized batteries behind the
> luggage area, but just didn't need that kind of capacity or weight in
> an Aux battery. Plus I like the idea of the shorter power leads with
> it mounted near the panel.
>
> Thanks,
>
> Vern
> do not archive
>
> ------------------------------------------------------------------------
> From: billschlatterer(at)sbcglobal.net
> To: rv10-list(at)matronics.com
> Subject: RE: Dual battery
> Date: Fri, 30 Nov 2007 20:14:10 -0600
>
> Vern, this is in my 7 but the same concept probably works in the
> 10. Battery is suspended directly under the AHRS. The bus right
> beside it is the Aux Bat which feeds separate switches for the
> EFIS which allows it to be powered on before/while starting or in
> an emergency but disconnected from the main bus. The Aux Bat also
> charges from the main bus during normal operations through a D25
> diode. As I remember it, the battery is a Panasonic P212 (7ah)
> recommended on the AE list.
>
> Hope this helps.
>
> Bill S
> 7a finishing
>
> ------------------------------------------------------------------------
> *From:* owner-rv10-list-server(at)matronics.com
> [mailto:owner-rv10-list-server(at)matronics.com] *On Behalf Of
> *Vernon Smith
> *Sent:* Friday, November 30, 2007 10:43 AM
> *To:* rv10-list(at)matronics.com
> *Subject:* RE: Dual battery
>
> Has anyone come up with a way to mount a 7ah battery up under the
> insturment panel or on the backside of the firewall? One of the
> smaller gel cells used in alarm systems seems like a nice backup
> battery for the EFIS system.
>
> Vern Smith (#324 doors & cabin top)
>
>
>
>
> ------------------------------------------------------------------------
>
> > From: william(at)gbta.net
> > To: rv10-list(at)matronics.com
> > Subject: Re: Dual battery
> > Date: Fri, 30 Nov 2007 08:24:58 -0600
> >
> > --> RV10-List message posted by: "Bill & Tami Britton"
> <william(at)gbta.net>
> >
> > Thanks for the information and pictures on the Battery/trays.
> Bob, I really
> > like the looks of that accessories tray that you built. If you
> get some
> > pictures of it please let me know. This would be a good time to
> work
> > something like that into my build. As for the battery tray
> dimensions, I
> > think I'll probably go with PC680s. The length is 7.27" and the
> width is
> > 3.11". Do I need to buy the batteries and build the box to exact
> dimensions
> > of the 2 batteries or is it acceptable to just build the tray
> maybe 1/4"
> > larger on each side so that I know the batteries will fit later
> on when I
> > get them.
> >
> > Thanks again for all the input,
> > Bill Britton
> >
> >
> > ---

- The Matronics RV10-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List
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