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Is this splice acceptable?

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ianwilson2

Joined: 06 Jan 2008
Posts: 33
Location: France

Posted: Wed Jul 02, 2008 2:48 am Post subject: Is this splice acceptable?

Hi all,



I've just fabricated the link from one of my Jab dynamo leads, connecting this to pin 1 of the regulater and to a 3A in-line fuse, which will eventually go the tach of my EIS.  I've posted a picture of how I've linked the 3 wires together and wanted your opinion on whether it's safe or is there a better way to do this?  In the picture the white wires on the left are from the dynamo, the white(?) on the right go to the voltage regulater and the red wire at the bottom is the 3A in-line fuse.  Am I ok with the piggy-back connector that I've used?



Thanks for your time.



Ian

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nuckolls.bob(at)cox.net
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Posted: Thu Jul 03, 2008 7:12 am Post subject: Is this splice acceptable?

At 03:48 AM 7/2/2008 -0700, you wrote:

 	  Quote: 	
		  



Hi all,



I've just fabricated the link from one of my Jab dynamo leads, connecting 

this to pin 1 of the regulater and to a 3A in-line fuse, which will 

eventually go the tach of my EIS.  I've posted a picture of how I've 

linked the 3 wires together and wanted your opinion on whether it's safe 

or is there a better way to do this?  In the picture the white wires on 

the left are from the dynamo, the white(?) on the right go to the voltage 

regulater and the red wire at the bottom is the 3A in-line fuse.  Am I ok 

with the piggy-back connector that I've used?



Thanks for your time.



Ian


	


   What you've done is obviously functional. You might

   consider bending the tap-tab to make the tap-wire

   lay parallel to the main line and then put a larger

   piece of heat shrink over the whole thing. A piece

   of 1/2" shrink ought to do it.



   Bob . . .

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ianwilson2

Joined: 06 Jan 2008
Posts: 33
Location: France

Posted: Thu Jul 03, 2008 11:40 pm Post subject: Re: Is this splice acceptable?

Thanks Bob for the response.  I was going to heat shrink the lot once I was happy it was ok.  I did think afterwards that I could have crimped the 2 wires into one spade connector - would that have been a better option?



Ian

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nuckolls.bob(at)cox.net
Guest

Posted: Fri Jul 04, 2008 6:22 am Post subject: Is this splice acceptable?

At 12:40 AM 7/4/2008 -0700, you wrote:

 	  Quote: 	
		  



Thanks Bob for the response.  I was going to heat shrink the lot once I 

was happy it was ok.  I did think afterwards that I could have crimped the 

2 wires into one spade connector - would that have been a better option?


	


    It's a constant trade off between what one might call

    the best-we-know-how-to-do and something that is sure

    to be a failure issue. If ultimate reliability is your

    goal, then crimp all three wires together into a single

    butt splice or solder and heatshrink. If some degree of

    serviceability is desired, then connectors of some

    style are in order but then service life goes down.

    I've seen builders twist such wires together and put

    a wire-nut on them like you would use in a light fixture

    on your ceiling.



    Loss of that joint doesn't represent a great hazard

    to flight if you've designed a failure tolerant system.

    So the only thing you need to trade off is the potential

    inconvenience of having to repair a convenient joint

    in the future or the inconvenience of dealing with

    permanent joints when replacing parts. Given that

    the PM alternators are exceedingly long lived,

    the butt splice or soldered joints are pretty

    attractive to me. The choice is yours.



    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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