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sam(at)fr8dog.net
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 Posted: Wed May 30, 2007 9:02 am Post subject: Extra battery |
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I'm looking to put a second battery in my RV for backup, in case of alternator failure, but also to pickup clearances at busy airports, prior to engine start. I have already wired the panel but, wondered if I could just use a diode in the power line coming off the buss so the aux battery could be charged, but not power the whole system, when I'm using the radio for clearances. See crude diagram below.
Thanks,
Sam Marlow
[img]cid:part1.07030806.08080701(at)fr8dog.net[/img]
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nuckollsr(at)cox.net
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| Posted: Wed May 30, 2007 11:03 am Post subject: Extra battery |
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That will work.
Bob . . .
At 01:00 PM 5/30/2007 -0400, you wrote:
| Quote: | I'm looking to put a second battery in my RV for backup, in case of
alternator failure, but also to pickup clearances at busy airports, prior
to engine start. I have already wired the panel but, wondered if I could
just use a diode in the power line coming off the buss so the aux battery
could be charged, but not power the whole system, when I'm using the radio
for clearances. See crude diagram below.
Thanks,
Sam Marlow
Aux Battery 1.jpg
|
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nuckollsr(at)cox.net
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| Posted: Wed May 30, 2007 11:07 am Post subject: Extra battery |
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Opps . . . hit the send button too soon.
That will work . . . but why an "extra battery"?
Obviously, you're depending on the power on/off switch in the 430 to absolutely
drop battery drain to zero . . . but assuming it does, why not just tie this
radio to the battery bus . . . or e-bus?
Alternator failure is one of the conditions that find tolerable by design
in the z-figures. I.e, failure tolerance is a design goal and should not
require the extra ordinary weight, wiring, diode or maintenance costs of
the approach you're proposing.
Bob. . .
At 01:00 PM 5/30/2007 -0400, you wrote:
| Quote: | I'm looking to put a second battery in my RV for backup, in case of
alternator failure, but also to pickup clearances at busy airports, prior
to engine start. I have already wired the panel but, wondered if I could
just use a diode in the power line coming off the buss so the aux battery
could be charged, but not power the whole system, when I'm using the radio
for clearances. See crude diagram below.
Thanks,
Sam Marlow
Aux Battery 1.jpg
incoming mail is certified Virus Free.
Checked by AVG.
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Bob . . .
----------------------------------------
( "Physics is like sex: sure, it may )
( give some practical results, but )
( that's not why we do it." )
( )
( Richard P. Feynman )
----------------------------------------
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sam.marlow
Joined: 25 Feb 2006
Posts: 99
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| Posted: Wed May 30, 2007 3:04 pm Post subject: Extra battery |
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Well, I wanted some sort of backup battery also. An e-buss would serve me better, but my panel is complete,I'm not wanting to redesign the electrical system. So I guess I'll live with what I have. But next airplane........ that's a different story. Thanks, for your help, I've learned a lot from your post.
Sam Marlow
---- "Robert L. Nuckolls wrote:
| Quote: | Opps . . . hit the send button too soon.
That will work . . . but why an "extra battery"?
Obviously, you're depending on the power on/off switch in the 430 to absolutely
drop battery drain to zero . . . but assuming it does, why not just tie this
radio to the battery bus . . . or e-bus?
Alternator failure is one of the conditions that find tolerable by design
in the z-figures. I.e, failure tolerance is a design goal and should not
require the extra ordinary weight, wiring, diode or maintenance costs of
the approach you're proposing.
Bob. . .
At 01:00 PM 5/30/2007 -0400, you wrote:
>I'm looking to put a second battery in my RV for backup, in case of
>alternator failure, but also to pickup clearances at busy airports, prior
>to engine start. I have already wired the panel but, wondered if I could
>just use a diode in the power line coming off the buss so the aux battery
>could be charged, but not power the whole system, when I'm using the radio
>for clearances. See crude diagram below.
>Thanks,
>Sam Marlow
>
>Aux Battery 1.jpg
>
>
>incoming mail is certified Virus Free.
>Checked by AVG.
Bob . . .
----------------------------------------
( "Physics is like sex: sure, it may )
( give some practical results, but )
( that's not why we do it." )
( )
( Richard P. Feynman )
----------------------------------------
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