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How is this battery lug crimp

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rvg8tor

Joined: 06 Apr 2009
Posts: 50
Location: Olympia, WA

Posted: Tue Oct 06, 2009 6:35 pm Post subject: How is this battery lug crimp

I am making my fat wire connections with #4 welding cable.  I found these lugs at the West Marine store.  I used a swagging tool to make the crimp.  It seems plenty strong.  This was a test piece and was only about 6 in long.  I put the lug in the vice and pulled on the cable and I pulled the insulation off.  I then put the wire in the vice and pulled the lug for all I was worth and it held.  Any reason this type of crimp would not work.  



These lugs seem to be better sized for the #4 welding cable.  My welding supply guy does have a tool that you put the wire and lug into and you whack it with a hammer to make the crimp.  The only lug the welding guy carries are copper colored and I though those would be too soft and corrode too much.  Hopefully the picture is loaded correctly.  It shows the tool as well as the crimp, or swag I guess in this case.

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Mike "Nemo" Elliott
RV-8A QB (Engine)
www.mykitlog.com/rvg8tor

harley(at)AgelessWings.co
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Posted: Wed Oct 07, 2009 3:46 am Post subject: How is this battery lug crimp

Yep...the link to the picture came through fine...

 

 Hmmm...interesting application ..using a cable thimble swager for a crimper...but being able to keep it from pulling off is only one of the goals of crimping. 

 

 I wonder how gas tight it will be with those "ears" on the sides. A regular crimper compresses the lug all the way around and doesn't leave any areas where the crimp changes direction, like the ears do where they meet the wire.  I'm wondering if this might be a location where air, water,  air borne chemicals, etc. can get in and start corrosion, increasing the resistance...

 

 Any visible gaps where the ears meet the wire?  And if not, is it tight enough there to prevent infiltration of gases or liquids? 

 

 Using the correct tool for the job is always a better idea! You can always borrow a crimper if you don't have one. 

 

 Harley

 

 rvg8tor wrote: [quote]    	  Quote: 	
		  --> AeroElectric-List message posted by: "rvg8tor" <rvg8tor(at)comcast.net> (rvg8tor(at)comcast.net)



I am making my fat wire connections with #4 welding cable.  I found these lugs at the West Marine store.  I used a swagging tool to make the crimp.  It seems plenty strong.  This was a test piece and was only about 6 in long.  I put the lug in the vice and pulled on the cable and I pulled the insulation off.  I then put the wire in the vice and pulled the lug for all I was worth and it held.  Any reason this type of crimp would not work.  



These lugs seem to be better sized for the #4 welding cable.  My welding supply guy does have a tool that you put the wire and lug into and you whack it with a hammer to make the crimp.  The only lug the welding guy carries are copper colored and I though those would be too soft and corrode too much.  Hopefully the picture is loaded correctly.  It shows the tool as well as the crimp, or swag I guess in this case.



--------

Mike &quot;Nemo&quot; Elliott

RV-8A QB (Fuselage)





Read this topic online here:



[url=http://forums.matronics.com/viewtopic.php?p 66890#266890]http://forums.matronics.com/viewtopic.php?p 66890#266890[/url]





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rvg8tor

Joined: 06 Apr 2009
Posts: 50
Location: Olympia, WA

Posted: Wed Oct 07, 2009 8:39 pm Post subject: Re: How is this battery lug crimp

Harley,



Thanks I kind of knew it would not work well, I got impatient knowing I would have to wait for the proper lugs int he mail and thought these might work with the tool I had, definitely not the right tool for the job.  Oh well I guess I will try the solder technique.  I should have the parts in a couple days.

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Mike "Nemo" Elliott
RV-8A QB (Engine)
www.mykitlog.com/rvg8tor

jindoguy(at)gmail.com
Guest

Posted: Wed Oct 07, 2009 9:41 pm Post subject: How is this battery lug crimp

Why don't you just solder your crimp and have the best of both worlds? Gas tight and mechanically strong. Just a thought.



Rick Girard



On Wed, Oct 7, 2009 at 11:39 PM, rvg8tor <rvg8tor(at)comcast.net (rvg8tor(at)comcast.net)> wrote:

 [quote]--> AeroElectric-List message posted by: "rvg8tor" <rvg8tor(at)comcast.net (rvg8tor(at)comcast.net)>

  

 Harley,

 

 Thanks I kind of knew it would not work well, I got impatient knowing I would have to wait for the proper lugs int he mail and thought these might work with the tool I had, definitely not the right tool for the job.  Oh well I guess I will try the solder technique.  I should have the parts in a couple days.

  

 --------

 Mike &quot;Nemo&quot; Elliott

 RV-8A QB (Fuselage)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=267065#267065

 

 

 

 

 

 

 

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Oct 08, 2009 9:14 am Post subject: How is this battery lug crimp

At 06:40 AM 10/7/2009, you wrote:

  	  Quote: 	
		  Yep...the link to the picture came through fine...



 Hmmm...interesting application ..using a cable thimble swager for a crimper...but being able to keep it from pulling off is only one of the goals of crimping. 



 I wonder how gas tight it will be with those "ears" on the sides. A regular crimper compresses the lug all the way around and doesn't leave any areas where the crimp changes direction, like the ears do where they meet the wire.  I'm wondering if this might be a location where air, water,  air borne chemicals, etc. can get in and start corrosion, increasing the resistance...



 Any visible gaps where the ears meet the wire?  And if not, is it tight enough there to prevent infiltration of gases or liquids? 



 Using the correct tool for the job is always a better idea! You can always borrow a crimper if you don't have one. 	




   Agreed. Just because the mash looks adequate and it

   "seems strong enough" does not speak definitively

   to crimp integrity. See:



  http://aeroelectric.com/articles/CrimpTools/crimptools.html



   In particular, check the cross-sectioned micrographs of

   the wire-grip sections.



 

        Bob . . .



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

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

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



     [quote][b]

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