Carlos,
You've probably thought of this but ... could you not move the 2nd battery
backwards into the tail? Too much W&B shift?
regards,
Dave
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com]On Behalf Of Carlos
Trigo
Sent: August 29, 2008 12:17 PM
To: aeroelectric-list@matronics.com
Subject: RE: Avionics Back-Up Power
> >
> >Since I had to put some weight in the tail of my RV-9A, I decided to
> >install a battery as back-up power to some avionics, the EFIS, the COMM
> >Radio and the Transponder.
> >
> >
> >My GRT EFIS has 2 power inputs, which are internally controlled (EFIS
uses
> >the electrons from the highest source), so this is easy to wire.
> >
> >However, the Radio (SL-30) and the Transponder (GTX-330) only have 1
power
> >input, therefore the question:
> >
> >
> > - How should I wire power, both from Main Battery and Back-Up
Battery,
> > to the COMM Radio and the Transponder?
>
> How big a battery is it? How many batteries does the airplane
> carry already . . . in other words do you already have an
> AUX battery?
>
> Bob . . .
I don't know exactly, because I still don't know the exact weight I need
for W & B, but I am planning for a battery around 10Ah
I do have 2 other batteries, Main and AUX, since my engine is an
electron-dependant Subaru.
Carlos
