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Grounding lugs

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blackoaks(at)gmail.com
Guest

Posted: Sun Jul 16, 2006 1:16 pm Post subject: Grounding lugs

Ok, got the transponder info, now...



I am still wondering if I need to change out the 1/4" brass thru firewall studs put in by Lancair.  I am using #2 welding cable for the batteries.  If I've done the calculations correctly the diameter of AWG2 is .27",  just slightly more than 1/4".  Would that .02 require going to 5/16" studs? 



Thanks to all who jumped in on the transponder part of the question. 	  Quote: 	
		  



 	  Quote: 	
		   > Second question regards the transmission of the transponder 

  > signal.  Does the signal rediate from the shaft and the ball or


	


	


-- 

John McMahon

Lancair Super ES, N9637M

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blackoaks(at)gmail.com
Guest

Posted: Sun Jul 16, 2006 1:16 pm Post subject: Grounding lugs

My mistake, They are steel not brass...

On 7/16/06, John McMahon <blackoaks(at)gmail.com (blackoaks(at)gmail.com)> wrote: 	  Quote: 	
		   Ok, got the transponder info, now...

I am still wondering if I need to change out the 1/4" brass thru firewall studs put in by Lancair.  I am using #2 welding cable for the batteries.  If I've done the calculations correctly the diameter of AWG2 is .27",  just slightly more than 1/4".  Would that .02 require going to 5/16" studs? 

Thanks to all who jumped in on the transponder part of the question. 	  Quote: 	

 	  Quote: 	
		   > Second question regards the transmission of the transponder 

  > signal.  Does the signal rediate from the shaft and the ball or

-- 

John McMahon

Lancair Super ES, N9637M  

-- 

John McMahon

Lancair Super ES, N9637M

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Hopperdhh(at)aol.com
Guest

Posted: Sun Jul 16, 2006 1:28 pm Post subject: Grounding lugs

In a message dated 7/16/2006 5:18:40 P.M. Eastern Daylight Time,  blackoaks(at)gmail.com writes:

  	  Quote: 	
		  Ok, got    the transponder info, now...



I am still wondering if I need to change    out the 1/4" brass thru firewall studs put in by Lancair.  I am using #2    welding cable for the batteries.  If I've done the calculations correctly    the diameter of AWG2 is .27",  just slightly more than 1/4".  Would    that .02 require going to 5/16" studs? 



   Thanks to all who jumped in on the transponder part of the question.     	  Quote: 	
		  



	


	


 

 John,

  

 No, It doesn't make any difference.  Even steel is OK.  In fact  brass is not a very good conductor, believe it or not.  It is much closer  to steel than to copper.  There is not that much resistance in the short  length we are talking about.  The main thing is a clean connection that  won't corrode, and that is mechanically strong enough that it is reliable.

  

 Dan Hopper

 RV-7A

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brian

Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA

Posted: Sun Jul 16, 2006 1:52 pm Post subject: Grounding lugs

On Jul 16, 2006, at 5:10 PM, John McMahon wrote:



 	  Quote: 	
		   Ok, got the transponder info, now...



 I am still wondering if I need to change out the 1/4" brass thru  

 firewall studs put in by Lancair.  I am using #2 welding cable for  

 the batteries.  If I've done the calculations correctly the  

 diameter of AWG2 is .27",  just slightly more than 1/4".  Would  

 that .02 require going to 5/16" studs?


	


No. The existing 1/4" stud will work just fine. There is likely more  

loss in the connection itself than in the resistance of the stud.



Brian Lloyd                         361 Catterline Way

brian-yak AT lloyd DOT com          Folsom, CA 95630

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



I fly because it releases my mind from the tyranny of petty things . . .

— Antoine de Saint-Exupéry

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_________________
Brian Lloyd
brian-yak at lloyd dot com
+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery

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