Shrink solder sleeves: What am I doing wrong? - Page 2 - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

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post #16 of 30 (permalink) Old May 18th, 20, 11:35 AM
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Re: Shrink solder sleeves: What am I doing wrong?

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Originally Posted by suprdave1 View Post
we use these regularly at work to repair mail sorting machines and have zero problems.

Post Office ?

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post #17 of 30 (permalink) Old May 18th, 20, 12:39 PM
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Question Re: Shrink solder sleeves: What am I doing wrong?

Are these the type you're using ?

https://www.inspiredhousehold.com/pr...13199510044715

To the OP, is it possible that the connectors you're using are just an inferior brand ? cause it seems some people have good results and some have poor results so why the big difference ?
Does 3M sell these kind of connectors ?
SuperDave and OldCutrlass what are the brands you guys are using that works good ?
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post #18 of 30 (permalink) Old May 18th, 20, 12:55 PM Thread Starter
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Quote:
Originally Posted by 71350SS View Post
Are these the type you're using ?

https://www.inspiredhousehold.com/pr...13199510044715

To the OP, is it possible that the connectors you're using are just an inferior brand ? cause it seems some people have good results and some have poor results so why the big difference ?
Does 3M sell these kind of connectors ?
SuperDave and OldCutrlass what are the brands you guys are using that works good ?
Those look exactly like what I’m using. I’m not 100% sure of the brand but I bought them from Summit.
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post #19 of 30 (permalink) Old May 18th, 20, 2:38 PM
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Re: Shrink solder sleeves: What am I doing wrong?

This thread is just in time because I was going to order some of these connectors (just not the ones in that link) so now I'll wait till I find some that don't have a know failure rate.
I have used some connectors that had the sealant in them but they were crimp type and the heat gun just melted the sealer inside along with the exterior shrink tubing,worked great.
I saw an ad for the solder type that showed a close up view that showed the solder melting and then the exterior heat shrink melt.When they were done they pulled on the wire from both sides and it held but who knows if they fixed it so it showed up good for the camera.

John
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post #20 of 30 (permalink) Old May 18th, 20, 2:45 PM
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Re: Shrink solder sleeves: What am I doing wrong?

I admit, I've never even seen one myself but my nephew who is a retired boilermaker said don't get them, they are no good.

Seems like the heat shrink tubing would shrink just from heating the solder.


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post #21 of 30 (permalink) Old May 19th, 20, 12:58 PM
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Re: Shrink solder sleeves: What am I doing wrong?

I used to solder but then got a set of MSD crimpers and connectors and that is really the only way to go. More flexible, don't need much heat(other than for heat shrink) and if done correctly wont pull apart...also easier in tight places.
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post #22 of 30 (permalink) Old May 19th, 20, 2:17 PM
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Re: Shrink solder sleeves: What am I doing wrong?

Quote:
Originally Posted by Dean View Post
I admit, I've never even seen one myself but my nephew who is a retired boilermaker said don't get them, they are no good.

Seems like the heat shrink tubing would shrink just from heating the solder.

Heat Shrink Self-Solder Butt Splice Connectors - YouTube

How to use Heat Shrink Self-Solder Butt Splice Connectors, non crimp, crimp and solderless styles - YouTube
That guy is good when he tests something you get the no-bullshirt answer.Anything he tests the answer can be trusted.

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post #23 of 30 (permalink) Old May 20th, 20, 10:59 AM
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Re: Shrink solder sleeves: What am I doing wrong?

Quote:
Originally Posted by Dean View Post
Why waste money on a wire splice that may not be a good-long lasting connection?

It is so easy to make a good Western Union Splice, just strip and tin both wires, twist together, solder and slip heat shrink tubing over the splice.

I just tried this method on some scrap wire now that I'm almost done with my rewire project
Works great. I use the heat shrink with the glue inside and couldn't pull them apart.
I'll try to use it for the few more connections I have.

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post #24 of 30 (permalink) Old Jun 2nd, 20, 3:01 AM
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Re: Shrink solder sleeves: What am I doing wrong?

Quote:
Originally Posted by Dean View Post
Why waste money on a wire splice that may not be a good-long lasting connection?

It is so easy to make a good Western Union Splice, just strip and tin both wires, twist together, solder and slip heat shrink tubing over the splice.


Ahem, I know what you meant, but the process is flawed.
I've performed your very same process more than
I care to remember especially to wires that are
already connected at one end and you need to
splice them together. That being said:


FIRST
Cut the heat shrink tubing longer then the spice,
and slide it over one of the wires your going to solder.
Slide it up about 6 inches so it won't shrink up when you
are soldering.

Now after you splice and solder it, slip the heat shrink tubing over
the splice and heat it up.

In general Dean's advice is typically spot on,
this is just a change in the order of the process.
Don't ask me how many times I've thought I was
finished and NUTS, can't put the heat shrink on.
Those times I use 3M 2242 rubber tape.
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post #25 of 30 (permalink) Old Jun 2nd, 20, 9:06 AM
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Re: Shrink solder sleeves: What am I doing wrong?

Soldered western union then solder and tape with good 3M black tape while still hot will make an excellent splice..

If nobody sees it, an Ideal wire nut will work well.. I've seen two of them hold a 2 H.P. motor in the air for years after the motor came loose and slid off its base and was hanging on the wires alone..
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post #26 of 30 (permalink) Old Jun 2nd, 20, 10:02 AM
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Re: Shrink solder sleeves: What am I doing wrong?

Dean's illustration of the Western Union splice is bulletproof. One thing to keep in mind, especially when dealing with 50 year-old wire, the wire needs to be clean and shiny BEFORE you solder it. Dull corroded wire will not wick up the solder and will result in a high resistance cold joint.

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post #27 of 30 (permalink) Old Jun 2nd, 20, 10:07 AM Thread Starter
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Re: Shrink solder sleeves: What am I doing wrong?

Quote:
Originally Posted by pnugene View Post
Dean's illustration of the Western Union splice is bulletproof. One thing to keep in mind, especially when dealing with 50 year-old wire, the wire needs to be clean and shiny BEFORE you solder it. Dull corroded wire will not wick up the solder and will result in a high resistance cold joint.
Letís drift the topic:

Whatís the best way to pre-clean older wiring to get it ready for a good solder joint?
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post #28 of 30 (permalink) Old Jun 2nd, 20, 10:14 AM
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Re: Shrink solder sleeves: What am I doing wrong?

Quote:
Originally Posted by any4xx View Post
Letís drift the topic:

Whatís the best way to pre-clean older wiring to get it ready for a good solder joint?
I fan out the strands and scrape with a single edge blade, dip in rosin flux, twist the strands back together, and tin the wire before soldering to the other wire. All this is extra work, and helped me decide to buy all new harnesses for my 67.

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post #29 of 30 (permalink) Old Jun 2nd, 20, 10:25 AM Thread Starter
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Re: Shrink solder sleeves: What am I doing wrong?

Quote:
Originally Posted by pnugene View Post
I fan out the strands and scrape with a single edge blade, dip in rosin flux, twist the strands back together, and tin the wire before soldering to the other wire. All this is extra work, and helped me decide to buy all new harnesses for my 67.
Yeah... I was hoping youíd mention a magic sauce. Iíve run across a few of these nasty wires in my Ď68 and have resorted to cleaning with alcohol and a brass brush. Iíve strongly considered a new harness and may still go there in the future.

Thank you.
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post #30 of 30 (permalink) Old Jun 2nd, 20, 11:42 AM
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Re: Shrink solder sleeves: What am I doing wrong?

I do like Randy does if needed but most of the time the wire is nice and clean after it's covering is removed so it only needs to be tinned with rosin core solder.

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