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Battery Sizing

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ralphhardin(at)comcast.ne
Guest

Posted: Sun Nov 26, 2006 5:35 pm Post subject: Battery Sizing

Greetings Fellow Builders,

  

 Have couple straight forward questions on sizing  for a duel battery set up in a F1 Rocket with high compression (10 to 1) AEIO540  Lycoming, duel Plasma III Ignitions, duel B&C alternators a 60 amp and  a 20 amp.

  

 Right now for electical I'm just building the  battery box which will be slightly different that the plans since I want to go  with (2) B&C 12V 16 A.H. batteries rather than the single 35 A.H. battery  the plans call for. I plan on building the (Z-14) Dual Battery, Duel Alternator,  Split Bus type system out of Bob's book down the road in 6 months or  so.

  

 Questions:

 1) will the duel battery set up 32 A.H. total still  be enough in most cold weather conditions maybe down below freezing 15 or 20  flights a year? I'm running a B & C NCS206-149-12 starter.

 2) Any special mounting tips two be aware of with  two batteries? Keep a space between them?

  

 Thanks

  

 Ralph Hardin   Seattle Wa.

  

    [quote][b]

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nuckollsr(at)cox.net
Guest

Posted: Sun Nov 26, 2006 9:21 pm Post subject: Battery Sizing

At 05:34 PM 11/26/2006 -0800, you wrote:



 	  Quote: 	
		  Greetings Fellow Builders,



Have couple straight forward questions on sizing for a duel battery set up 

in a F1 Rocket with high compression (10 to 1) AEIO540 Lycoming, duel 

Plasma III Ignitions, duel B&C alternators a 60 amp and a 20 amp.



Right now for electical I'm just building the battery box which will be 

slightly different that the plans since I want to go with (2) B&C 12V 16 

A.H. batteries rather than the single 35 A.H. battery the plans call for. 

I plan on building the (Z-14) Dual Battery, Duel Alternator, Split Bus 

type system out of Bob's book down the road in 6 months or so.



Questions:

1) will the duel battery set up 32 A.H. total still be enough in most cold 

weather conditions maybe down below freezing 15 or 20 flights a year? I'm 

running a B & C NCS206-149-12 starter.


	


    If the batteries are up front and you plan to use

    both batteries for cranking, then there's zero risk

    of problems. Actually, one of those batteries will

    crank the engine nicely. It's wire size/lengths that

    will cripple an otherwise capable battery.



 	  Quote: 	
		  2) Any special mounting tips two be aware of with two batteries? Keep a 

space between them?


	


    They can mount tight.  If they have lead posts, be sure

    to use nice soft connecting wires . . . like 4AWG welding

    cable irrespective of what size/style of fat wire is used

    elsewhere.



        Bob . . .

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

      < What is so wonderful about scientific truth...is that >

      < the authority which determines whether there can be   >

      < debate or not does not reside in some fraternity of   >

      < scientists; nor is it divine. The authority rests     >

      < with experiment.                                      >

      <                            --Lawrence M. Krauss       >

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

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mprather(at)spro.net
Guest

Posted: Mon Nov 27, 2006 1:40 pm Post subject: Battery Sizing

Hello Mr Hardin,



I am just confused by the use of "Dual" and "Duel".  "Duel(ling)

Alternators" sounds like some kind of weird techie cartoon.  Or bad

regulator design.  "Duel(ling) Batteries" sounds like something navel

(hah!) gunners would get involved in.



I apologize for picking on your message - there are so many typos/usage

problems posted.  This message is no worse, though it did tickle my fancy

more than some others have..



Typos/usage problems can cause real headaches when communicating about

topics that require some amount of precision.  Some people might say

"Well, they know what I mean.  It's obvious."  Sometimes it isn't. 

Sometimes it's the decimal place or the minus sign.  Hmm.



Here's to re-reading what you've typed before clicking the Send button. 

You don't have time to proof read?  Do you have time to send clarifying

messages when the first one you sent had errors/mistakes in it?



And, if you're going to make a mistake because you don't have time to look

up the correct spelling, make the mistake consistently..



A useful (though overly laden with advertisements) resource:



http://www.dictionary.com

Best regards,



Matt-

 	  Quote: 	
		   Greetings Fellow Builders,



 Have couple straight forward questions on sizing for a duel battery set

up
	


 	  Quote: 	
		   in a F1 Rocket with high compression (10 to 1) AEIO540 Lycoming, duel

Plasma III Ignitions, duel B&C alternators a 60 amp and a 20 amp.
	


 	  Quote: 	
		  

 Right now for electical I'm just building the battery box which will be

slightly different that the plans since I want to go with (2) B&C 12V 16
	


A.H. batteries rather than the single 35 A.H. battery the plans call

for.

 	  Quote: 	
		   I plan on building the (Z-14) Dual Battery, Duel Alternator, Split Bus

type system out of Bob's book down the road in 6 months or so.
	


 	  Quote: 	
		  

 Questions:

 1) will the duel battery set up 32 A.H. total still be enough in most

cold
	


 	  Quote: 	
		   weather conditions maybe down below freezing 15 or 20 flights a year?

I'm
	


 	  Quote: 	
		   running a B & C NCS206-149-12 starter.

 2) Any special mounting tips two be aware of with two batteries? Keep a

space between them?
	


 	  Quote: 	
		  

 Thanks



 Ralph Hardin   Seattle Wa.

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kayce33(at)earthlink.net
Guest

Posted: Mon Nov 27, 2006 3:53 pm Post subject: Battery Sizing

Well said, now onto the difference between "your" that which belongs to you, 

and "you're" meaning ....you are.

Harold Kovac......no stranger to typos or other errors

---

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Don Owens

Joined: 17 Jan 2006
Posts: 24
Location: North Central Washington

Posted: Mon Nov 27, 2006 4:37 pm Post subject: Battery Sizing

Hello Mr Hardin,



I am just confused by the use of "Dual" and "Duel".  "Duel(ling)

Alternators" sounds like some kind of weird techie cartoon.  Or bad

regulator design.  "Duel(ling) Batteries" sounds like something navel

(hah!) gunners would get involved in.

Matt,  I take responsibility for beginning the "duel."  I guess there are

cases where spell checker won't make up for my lack of proof-reading or

spelling ability.  Once it gets into a thread it seems to take on a life of

its own.  I certainly didn't mean to start a verbal "duel."  I am much more

interested in learning how to install and wire an airplane with "dual"

alternators and "dual" batteries.  I stand corrected.  Thanks for the link.

Don Owens



http://www.dictionary.com

Best regards,



Matt-





--

1:40 PM

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Terry Watson

Joined: 09 Jan 2006
Posts: 290
Location: Seattle, WA USA

Posted: Mon Nov 27, 2006 5:05 pm Post subject: Battery Sizing

While I agree with the idea that good spelling and punctuation helps make

posts to the list more clear and understandable, I would hope that we don't

intimidate or annoy those who have something to say from posting because

they lack confidence in their ability to write "properly". This could be

especially difficult for those whose primary language is not English. I

doubt if anyone intentionally misspells or misuses words. Besides, spelling

and grammar are constantly evolving. "Your" instead of "you're" for "you

are" may well be considered proper in a few years. Take a look at the

"language" evolving for text messaging!



Keep your eye on the prize -- sharing knowledge with those with whom you

share an interest. Besides, Ralph covered his bases and spelled dual both

ways: "dual" and "duel". I should start doing that with "guard", or is it

"gaurd".



Terry

RV-8A finishing and finishing and finishing

Seattle



Hay, what's all this cold white stuff on the ground?



Do not archive!





--

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mprather(at)spro.net
Guest

Posted: Mon Nov 27, 2006 5:54 pm Post subject: Battery Sizing

Terry,



Certainly I agree with these sentiments.  I absolutely do not want to

discourage people from posting.  I just like to see writers read through

their messages, word by word, at least once before pressing the Send

button..  No big deal.

Regards,



Matt-



[quote] 

 <terry(at)tcwatson.com>



 While I agree with the idea that good spelling and punctuation helps make

 posts to the list more clear and understandable, I would hope that we

 don't

 intimidate or annoy those who have something to say from posting because

 they lack confidence in their ability to write "properly". This could be

 especially difficult for those whose primary language is not English. I

 doubt if anyone intentionally misspells or misuses words. Besides,

 spelling

 and grammar are constantly evolving. "Your" instead of "you're" for "you

 are" may well be considered proper in a few years. Take a look at the

 "language" evolving for text messaging!



 Keep your eye on the prize -- sharing knowledge with those with whom you

 share an interest. Besides, Ralph covered his bases and spelled dual both

 ways: "dual" and "duel". I should start doing that with "guard", or is it

 "gaurd".



 Terry

 RV-8A finishing and finishing and finishing

 Seattle



 Hay, what's all this cold white stuff on the ground?



 Do not archive!





 --

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marc

Joined: 28 Nov 2006
Posts: 1

Posted: Tue Nov 28, 2006 10:57 am Post subject: Re: Battery Sizing

Hi Ralph,



Spelling issues aside, I'm curious why you're putting a Z-14 in a Rocket?  Will you be flying lots of IFR, or is there another reason?



Thanks,

Marc

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_________________
Marc
RV-7, flying

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