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All Electric RV ?

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fastpilotrv8

Joined: 28 Dec 2006
Posts: 21
Location: Chicago Area

Posted: Mon Feb 12, 2007 7:19 am Post subject: All Electric RV ?

All Electric RV which way to go?

  

 I have and all electric panel, so my question is do I install a 

  

 A. Second Alternator (12 Amp B&C) using  existing battery

 B. Backup battery only with a switch

 C. Second Alternator  and a Backup Battery

  

 I am already have been using an Ex-Bus for 4 years, (which has a specific 5  amp circuit for charging a aux battery). My battery is in the tail due to  weight and balance.  Back up plan also includes a TruTrac ADI with backup  battery/GPS, hand held Garmin 195, and a hand held I-Com hand held radio.   I do fly IFR.

  

 So where I need opinions & experiances  on which method do I use  ?

 Who can tell me where to get some wiring diagrams (other than Bob  Knuckols) and the parts ?

  

 Dane Sheahen

 N838RV RV8a

  

  [quote][b]

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ronlee(at)pcisys.net
Guest

Posted: Mon Feb 12, 2007 7:55 am Post subject: All Electric RV ?

 	  Quote: 	
		  Since you fly IFR I suspect that dual alternator and battery is your best bet.


	


If you only have one battery and two alternators would you continue flying

if the battery  died?  Likewise, if you have two batteries and the one 

alternator

dies would you continue flying or land?



Ron Lee

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kahuna

Joined: 02 Feb 2007
Posts: 93

Posted: Mon Feb 12, 2007 10:17 am Post subject: All Electric RV ?

There are as many opinions on this as there are ideas.  

My 2 cents after owning 2 all electric RV’s for over 2k hours.  

     Batteries      don’t fail. More than 1 is not necessary  
Alternators      do fail. I have lost ~6, including one IMC. Never needed 2 though.   
I      have plenty of juice in my battery to get me to my destination or some      other suitable location  
Your      far more likely to have a device fail than “the system”  
too      complex means too much trouble, complexity, weight, & headache  
If      you cant find what your looking for with all of Bobs diagrams, Im not sure      where you would. You can easily make subtle changes to any one of those to      suit your needs.   
Best      to write down all your failure modes that are in the realm of possibility      and see if your system supports them, including multiples of them.   

   

Its gong to be very hard to provide you advice without knowing your mission objectives. I fly IFR is really not enough. Do you do mostly punch throughs and let downs? Do you generally NEED to get somewhere regardless of weather? Are you more cautious and conservative, or more liberal on your decisions? Are your minimums minimums, or well above that? Have you actually killed your system in flight, fired up the battery backup, and tried to fly to a suitable location under the hood? Have you considered all your likely failure modes and worked em through?  

   

Just some random thoughts for you.  

Mike  

   

   

   

   

         

  

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of FASTPILOTRV8(at)aol.com

 Sent: Monday, February 12, 2007 10:19 AM

 To: rv-list(at)matronics.com

 Subject: All Electric RV ?  

  

     

All Electric RV which way to go?  

    

   

    

I have and all electric panel, so my question is do I install a   

    

   

    

A. Second Alternator (12 Amp B&C) using existing battery  

    

B. Backup battery only with a switch  

    

C. Second Alternator  and a Backup Battery  

    

   

    

I am already have been using an Ex-Bus for 4 years, (which has a specific 5 amp circuit for charging a aux battery). My battery is in the tail due to weight and balance.  Back up plan also includes a TruTrac ADI with backup battery/GPS, hand held Garmin 195, and a hand held I-Com hand held radio.  I do fly IFR.  

    

   

    

So where I need opinions & experiances  on which method do I use ?  

    

Who can tell me where to get some wiring diagrams (other than Bob Knuckols) and the parts ?  

    

   

    

Dane Sheahen  

    

N838RV RV8a  

    

   

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      [quote][b]

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dan(at)rvproject.com
Guest

Posted: Mon Feb 12, 2007 4:44 pm Post subject: All Electric RV ?

None of the above (or below as the case may be).  How much  truly "in the solid soup" IFR flying do you really plan to do?  How  much soup time have you logged in the past 1-2 years?  How many of those  flights was a MUST scenario and not a MIGHT scenario (where you HAD to be  somewhere).  Be honest.

  

 Unless your engine depends on electrons flowing for the fan to keep turning  (i.e. dual electronic ignition without backup such as LASAR or P-Mag), I'm a big  proponent of KISS.  And that means one battery, one HIGH QUALITY  alternator, done deal.

 

Hey, you mentioned the word "opinions" so that's where I'm coming from  here.

  

 do not archive

 )_( Dan

 RV-7 N714D (1200 hours)

 www.rvproject.com

 www.weathermeister.com

  

 [quote]   ---

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