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Z19RB question

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Allen Fulmer

Joined: 10 Jan 2006
Posts: 79
Location: Alexander City, AL

Posted: Wed Nov 14, 2007 8:52 pm Post subject: Z19RB question

Bob,



I am using your Z19RB architecture in my RV7 with Eggenfellner Subaru E6T.



With the dual batteries and battery contactors in the rear of the plane and

a single "fat wire" coming forward do you see any problem with putting a bus

bar (like Stein's BB235: http://www.steinair.com/images/store/bb2305.jpg)

near the firewall to terminate the fat wire?



I would continue the fat wire from this bus bar to the starter contactor on

the engine.  The feed for the "Main Power Distribution Bus" would come from

this bus rather than the starter contactor as depicted on Z19RB.  This way I

can do all the wiring (and testing) behind the firewall without having the

engine mounted.  I can see that I have created one more joint in the run

from the batteries to the starter contactor but is that really a problem?



Also, I have a pair of Gigavac GX11 contactors for the battery contactors

and I was wondering how best to connect the coil ground wire (and optional

NO/NC/COM contact wires if I choose) to the wires carrying them to the

instrument panel mounted switch? Possible choices include:

	AMP "Mate-n-Lock" / Molex

	Mount a terminal strip with faston tabs by each contactor

	AMP Knife Splice?



Thanks,



Allen Fulmer

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_________________
RV7 QB Fuselage
Eggenfellner H6 on orde
N808AF reserved
Alexander City, AL

nuckolls.bob(at)cox.net
Guest

Posted: Fri Nov 16, 2007 10:58 am Post subject: Z19RB question

At 10:51 PM 11/14/2007 -0600, you wrote:



 	  Quote: 	
		  



Bob,



I am using your Z19RB architecture in my RV7 with Eggenfellner Subaru E6T.



With the dual batteries and battery contactors in the rear of the plane and

a single "fat wire" coming forward do you see any problem with putting a bus

bar (like Stein's BB235: http://www.steinair.com/images/store/bb2305.jpg)

near the firewall to terminate the fat wire?



I would continue the fat wire from this bus bar to the starter contactor on

the engine.  The feed for the "Main Power Distribution Bus" would come from

this bus rather than the starter contactor as depicted on Z19RB.  This way I

can do all the wiring (and testing) behind the firewall without having the

engine mounted.  I can see that I have created one more joint in the run

from the batteries to the starter contactor but is that really a problem?



Also, I have a pair of Gigavac GX11 contactors for the battery contactors

and I was wondering how best to connect the coil ground wire (and optional

NO/NC/COM contact wires if I choose) to the wires carrying them to the

instrument panel mounted switch? Possible choices include:

         AMP "Mate-n-Lock" / Molex

         Mount a terminal strip with faston tabs by each contactor

         AMP Knife Splice?


	


   My personal choice would be knife splices but either

   of the other two technologies would probably be okay

   if installed with good craftsmanship. My personal

   design goals call for lowest parts count and minimized

   process requirements. Knife splices and heat shrink

   are the most attractive solutions to those goals.



   Bob . . .

        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

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

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longg(at)pjm.com
Guest

Posted: Fri Nov 16, 2007 5:26 pm Post subject: Z19RB question

Bob,

Re: the Eggenfellner installation and Z19. Eggenfellner recommends a 200

amp ANL fuse close to the positive battery post on each battery. I don't

see this reflected in your design, so in your opinion is this justified

or just an uber precaution?



Thanks



--

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Allen Fulmer

Joined: 10 Jan 2006
Posts: 79
Location: Alexander City, AL

Posted: Fri Nov 16, 2007 6:35 pm Post subject: Z19RB question

Thanks Bob,



Any thoughts on the first question?



 	  Quote: 	
		  >>>	I am using your Z19RB architecture in my RV7 with 

>>>	Eggenfellner Subaru E6T.

>>>

>>>	With the dual batteries and battery contactors in the rear 

>>>	of the plane and

>>>	a single "fat wire" coming forward do you see any problem 

>>	with putting a bus

>>>	bar (like Stein's BB235: 

>>	http://www.steinair.com/images/store/bb2305.jpg)

>>>	near the firewall to terminate the fat wire?

>>>

>>>	I would continue the fat wire from this bus bar to the 

>>	starter contactor on

>>>	the engine.  The feed for the "Main Power Distribution Bus" 

>>	would come from

>>>	this bus rather than the starter contactor as depicted on 

>>	Z19RB.  This way I

>>>	can do all the wiring (and testing) behind the firewall 

>>	without having the

>>>	engine mounted.  I can see that I have created one more 

>>	joint in the run

>>>	from the batteries to the starter contactor but is that 

>>	really a problem?

>>>

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_________________
RV7 QB Fuselage
Eggenfellner H6 on orde
N808AF reserved
Alexander City, AL

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