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Check My Soldering

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art(at)zemon.name
Guest

Posted: Sun Jul 17, 2016 12:35 pm Post subject: Check My Soldering

Folks,



Here are my first two solder splices that I plan to put into my airplane. It's 18 AWG wire. Do these look acceptable to you? My tech advisor won't be able to inspect these once I put heat shrink tubing over them so I'm looking for some reassurance here.

[img]cid:ii_iqr27pi90_155fa902b6bade7d[/img]

[img]cid:ii_iqr27pim1_155fa902b6bade7d[/img]

â€‹[img]cid:ii_155fa90551d47825[/img][img]cid:ii_155fa9052360161a[/img]



Thanks,

Â  Â  -- Art Z.



-- 

http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

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ceengland7(at)gmail.com
Guest

Posted: Sun Jul 17, 2016 1:27 pm Post subject: Check My Soldering

On Sun, Jul 17, 2016 at 3:34 PM, Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote:

 	  Quote: 	
		  Folks,



Here are my first two solder splices that I plan to put into my airplane. It's 18 AWG wire. Do these look acceptable to you? My tech advisor won't be able to inspect these once I put heat shrink tubing over them so I'm looking for some reassurance here.





Thanks,

Â  Â  -- Art Z.



-- 

http://CheerfulCurmudgeon.com/



	




The soldering looks fine to me, but I'd run my fingers around all the joints to feel for sharp points & edges. Anything you can snag your finger on is likely to eventually poke through the heat shrink. You can snip off any high points with a pair of flush-cutting 'dikes' (diagonal cutters).

Charlie

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Sun Jul 17, 2016 1:31 pm Post subject: Re: Check My Soldering

Squeeze with pliers any wires that do not lay flat.  Wrap with tape first to prevent wires from poking through heat shrink.  The heat shrink should be long enough to extend 1/2" beyond the solder-stiffened wire.  If the splices are subject to vibration, support the wire on each side of the spice with clamps or ties.  Two layers of heat shrink will give additional support and protection.

_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Sun Jul 17, 2016 1:48 pm Post subject: Check My Soldering

At 03:34 PM 7/17/2016, you wrote:

  	  Quote: 	
		  Folks,



 Here are my first two solder splices that I plan to put into my airplane. It's 18 AWG wire. Do these look acceptable to you? My tech advisor won't be able to inspect these once I put heat shrink tubing over them so I'm looking for some reassurance here.

 	


   I think they're fine. Just make sure there are no

   sharp whiskers standing off the joints that might

   poke through the shrink. I would not wrap with tape

   but you could consider a short piece of shrink over

   the joint only, then a second that extends 1/2" either

   side of the joint cover.



   What kind of solder are you using?



 



 

   Bob . . .

billp(at)wwpc.com
Guest

Posted: Sun Jul 17, 2016 2:33 pm Post subject: Check My Soldering

 	  Quote: 	
		  Art,



I'm not sure what you call that splice. It looks like you pushed the 

wires together then wrapped it with a piece of solid wire then soldered it.



I like the Western Union splice for inline soldered splices. The splice 

is mechanically strong even without solder. They really won't come apart 

under a pull. They are fairly compact and uniform. Best of all they're 

pretty easy to do even in a tight space.



The Western Union (or Lineman's Splice) will work with solid or stranded 

wire and it seems to be a favorite with serious wiring folks.Bill Putney - WB6RFW

Chief Engineer

KPTZ - Port Townsend, WA



PP-SEL/A&P-IA



"...you know me to be a very smart man. Don't you think if I were wrong, I'd know it?" -Sheldon Cooper



	
     On 7/17/16 1:34 PM, Art Zemon wrote:

     

      	  Quote: 	
		         Folks,         

         

         Here are my first two solder splices that I plan to put           into my airplane. It's 18 AWG wire. Do these look acceptable           to you? My tech advisor won't be able to inspect these once I           put heat shrink tubing over them so I'm looking for some           reassurance here.

         

         

         

         

         Thanks,

         Â  Â  -- Art Z.           

           

           -- 

                        http://CheerfulCurmudgeon.com/                              "If                 I am not for myself, who is for me? And if I am only for                 myself, what am I? And if not now, when?" Hillel

ceengland7(at)gmail.com
Guest

Posted: Mon Jul 18, 2016 10:21 am Post subject: Check My Soldering

Dave,

       

       I think what he did is described in the Connection book. Reality       is, that most of the old school 'make a mechanically strong joint       then solder it' philosophy is really massive overkill. The only       real advantage is keeping the joint area stable while the solder       cools.

       

       Try just overlapping 2 wires in parallel about a half inch &       solder. Then try to pull them apart. If you soldered the joint       properly, the insulation will fail before you can separate the       wires.

       

       Charlie

       

       On 7/18/2016 12:30 PM, David Lloyd wrote:

     

     [quote]                            Art,

       Â 

       Not a recommended "type" of splice, but,           if it never is under tension, and a couple layers heat shrink,           should be OK.

       Like others have suggested the famous           Western Union splice is top of the list for best methods.

       Dave

       Â 

                       

       [quote]         ---

nuckolls.bob(at)aeroelect
Guest

Posted: Mon Jul 18, 2016 1:43 pm Post subject: Check My Soldering

At 12:30 PM 7/18/2016, you wrote:

  	  Quote: 	
		  ï»¿ 

 Art,

  

 Not a recommended "type" of splice, but, if it never is under tension, and a couple layers heat shrink, should be OK.

 Like others have suggested the famous Western Union splice is top of the list for best methods.

 Dave 	




   The 'western union' splice has a rich

   place in history. A time when thousands

   of miles of wire were being strung between

   poles . . . first for the telegraph then

   for telephone and power distribution. It

   had the advantage of placing the touching

   surfaces of the two conductors under tension

   that was a natural consequence of suspension

   on poles.  That tension translated into a

   lot of pressure which went to the electrical

   integrity of the join . . . solder was sometimes

   added to add environmental integrity by

   encapsulating the joint.



   Unless you're suspending wires over substantial

   spans, there's no value added for fabricating

   that kind of joint. But for many decades, gas-tight,

   insulation supporting spicing techniques became

   the technique of choice



 [img]cid:.0[/img]



   But back about 1975, I think it was a company

   called RayChem who offered a series of devices

   to attach wires but with solder only . . .

   no mashing necessary.



  http://tinyurl.com/ju4gvvg



   Like the open-barrel, sheet-metal pins in

   Mate-n-Lok/Molex connectors, this new idea raised

   some eyebrows . . . but the technique proved

   quite effective for wires not suspended between

   telegraph poles.



   The joining technology is simple . . . lap

   soldered joints covered in some form heat

   shrink. I used to sell solder-sleeves. I sold

   off my residual inventory a couple years ago

   but I still have a few hundred such devices

   in my skunk-werks parts drawers.



   Unfortunately, these devices, like the various

   PIDG devices, have range limits for the number

   and sizes of wires they'll effectively join.

   But taking clue from the soldered and protected

   lap joint offered by RayChem, I crafted this

   article that recycled the idea in another market.



  http://tinyurl.com/gwx3q9t



   There's no good reason that this simple joining

   technique cannot be put to good use on our

   airplanes. NASA uses Solder Sleeves. A little

   solder and heat-shrink offers an opportunity

   to do shade-tree clones.



   The only thing I would suggest for Art's 

   craftsmanship



 [img]cid:.1[/img]



 

   is to simply lay the two stripped ends parallel

   to each other without 'interleaving' the strands.



  



 

   Bob . . .

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art(at)zemon.name
Guest

Posted: Mon Jul 18, 2016 2:19 pm Post subject: Check My Soldering

On Mon, Jul 18, 2016 at 4:41 PM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:

 	  Quote: 	
		   Â The only thing I would suggest for Art's 

 Â  craftsmanship



 [img]cid:.1[/img]



 

 Â  is to simply lay the two stripped ends parallel

 Â  to each other without 'interleaving' the strands.

	






Will do, Bob. I probably spent as long trying to get the strands to interleave nicely that everything else combined. I'm not happy with how it worked since there are lots of sharp ends sticking up.

Thank you, everybody!

Â  Â  -- Art Z.

-- 

http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

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art(at)zemon.name
Guest

Posted: Wed Jul 20, 2016 4:26 am Post subject: Check My Soldering

Folks,

Once again, thank you for your advice. I passed a minor milestone in my airplane project on Monday evening, building the first wiring components. I cut off the two splices that I showed you earlier, where I had interleaved the strands. I redid them from scratch. See photos at the bottom of this page on my blog:Â https://cheerfulcurmudgeon.com/2016/07/19/physical-electrical-considerations-when-mounting-avionics/



Cheers,

Â  Â  -- Art Z.



-- 

http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Jul 20, 2016 4:43 am Post subject: Check My Soldering

 	  Quote: 	
		  I redid them from scratch. See photos at the bottom of this page on my blog:Â  https://cheerfulcurmudgeon.com/2016/07/19/physical-electrical-considerations-when-mounting-avionics/ 	


   Look'n good! Know what you mean about the heat . . . 

   living 100 miles from civilization makes quick/n/cheerful

   a/c services problematic. I've become an ad hoc

   service tech for my own systems and those of some

   neighbors. My house machine is again humming nicely

   but I'm getting ready to saddle up and service a

   the second of two machines in Sun City . . . and

   I'm waiting on a part for the a/c in my truck!



   There can be a down-side to possession of skills and

   too many tools . . .



 

   Bob . . .

art(at)zemon.name
Guest

Posted: Wed Jul 20, 2016 5:14 am Post subject: Check My Soldering

I can't tell you how many times I have wished for one of those T-shirts that says,



NO I WON"T FIX YOUR COMPUTER

<sigh>

Â  Â  -- Art Z.



On Wed, Jul 20, 2016 at 7:40 AM, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote: 	  Quote: 	
		   Â  Look'n good! Know what you mean about the heat . . . 

 Â  living 100 miles from civilization makes quick/n/cheerful

 Â  a/c services problematic. I've become an ad hoc

 Â  service tech for my own systems and those of some

 Â  neighbors. My house machine is again humming nicely

 Â  but I'm getting ready to saddle up and service a

 Â  the second of two machines in Sun City . . . and

 Â  I'm waiting on a part for the a/c in my truck!



 Â  There can be a down-side to possession of skills and

 Â  too many tools . . .

	


-- 

http://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

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