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battery wiring

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peterc(at)pipcom.com
Guest

Posted: Tue Feb 27, 2007 12:58 pm Post subject: battery wiring

In my 912 powered Rans, the battery is going just  behind the firewall with the starter solenoid and manual master actually mounted  right on the battery terminals.You have suggested a brass bolt thru the firewall  to connect the ground cable from the battery and from engine ground. Might it be  preferable if I ran the ground straight thru the firewall to the engine  then had maybe a #10 wire from the battery to the firewall for the rest of the  frame grounding? 

 Thanks

 Peter

   [quote][b]

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Gilles.Thesee(at)ac-greno
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Posted: Tue Feb 27, 2007 1:09 pm Post subject: battery wiring

Peter C a écrit :

 	  Quote: 	
		   In my 912 powered Rans, the battery is going just behind the firewall 

 with the starter solenoid and manual master actually mounted right on 

 the battery terminals.You have suggested a brass bolt thru the 

 firewall to connect the ground cable from the battery and from engine 

 ground. Might it be preferable if I ran the ground straight thru the 

 firewall to the engine then had maybe a #10 wire from the battery to 

 the firewall for the rest of the frame grounding? 


	


Peter,



What advantage do you see in building a fireproof FWL pass-through for 

your big wire, vs just drilling for your ground bolt ?

What exactly do you call "frame grounding" ?

Remember that all the grounds from your aircraft system should be 

connected to the same point, and the ground stud and bus provide just 

what is needed.

You may wish to see figure Z16, which was designed for the Rotax.



Regards,

Gilles

http://contrails.free.fr

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peterc(at)pipcom.com
Guest

Posted: Tue Feb 27, 2007 4:05 pm Post subject: battery wiring

Gilles my thinking was to address maximum cranking  capability while still providing a firewall ground with the #10 (or larger)  wire.

   [quote][b]

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Gilles.Thesee(at)ac-greno
Guest

Posted: Tue Feb 27, 2007 4:10 pm Post subject: battery wiring

Peter C a écrit :

 	  Quote: 	
		   Gilles my thinking was to address maximum cranking capability while 

 still providing a firewall ground with the #10 (or larger) wire.


	


You won't have any cranking problem with 6 or 4 wires, ground stud and a 

recombinant gas battery.

That's the way I wired our project, and we've been flying for two years now.

Figure Z16 is really worth a close study.



Regards,

Gilles

http://contrails.free.fr

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