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WIRE QUALITY

 
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mike(at)vision499.com
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PostPosted: Wed Nov 23, 2016 10:38 pm    Post subject: WIRE QUALITY Reply with quote
Hello,

I have attached a photo of wire that I have put into my project.

The designation is M22759/34-14 90484, printed in green on the white insulation. Please note the double insulation, a blue sheath under the white.
I have not noticed this double insulation on any of my other wires.

The problem I have is that the wire seems to be badly tarnished and I am unable to solder it. I used paste flux on a small piece and the solder still will not stick.
The sample is from the center on a long piece that has been cut so it is not as if the end could have corroded.
All my other joints on this wire have been crimp joints and I just did not notice the bad discoloration on this wire.

My question is will the crimped joints be OK?

Is this wire OK or could it be counterfeit?

Thanks

Mike

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ceengland7(at)gmail.com
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PostPosted: Thu Nov 24, 2016 5:54 am    Post subject: WIRE QUALITY Reply with quote
On Thu, Nov 24, 2016 at 12:36 AM, Mike Pienaar <mike(at)vision499.com (mike(at)vision499.com)> wrote:
Quote:

 
Hello,
 
I have attached a photo of wire that I have put into my project.
 
The designation is M22759/34-14 90484, printed in green on the white insulation. Please note the double insulation, a blue sheath under the white.
I have not noticed this double insulation on any of my other wires.
 
The problem I have is that the wire seems to be badly tarnished and I am unable to solder it. I used paste flux on a small piece and the solder still will not stick.
The sample is from the center on a long piece that has been cut so it is not as if the end could have corroded.
All my other joints on this wire have been  crimp joints and I just did not notice the bad discoloration on this wire.
 
My question is will the crimped joints be OK?
 
Is this wire OK or could it be counterfeit?
 
Thanks
 
Mike
 


Hi Mike, 
I've seen some mil spec wires listed on ebay (the listing included milspec # & data sheet) that use other-than tin to plate the strands; some are intended to only be crimped and the plating won't take solder. No idea if that's what you have; I've never gotten well versed in milspec-ese. Have you tried to  clean the strands mechanically, with scotchbrite pads or a stainless scrubber (not remove the plating; just clean it)? If you can clean them mechanically and solder to the plating, you might have a problem with the ones that are crimped because it probably is corrosion. If it still won't take solder, it might be one of the crimp-only wires.
Maybe someone with more knowledge of milspec #s will be able to help you.
Charlie

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ashleysc(at)broadstripe.n
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PostPosted: Thu Nov 24, 2016 7:39 am    Post subject: WIRE QUALITY Reply with quote
Hi Mike;
A brief check leads me to believe your wire is supposed to be made of tinned copper, which should be easy to solder and shouldn't easily corrode. Since yours is corroded and not easy to solder, you may have encountered a fake. Sorry to mention this, but better than relying on it later. It's definitely worth sending a sample to someone who can give you a definitive answer.
Cheers! Stu.
From: "Mike Pienaar" <mike(at)vision499.com>
To: aeroelectric-list(at)matronics.com
Sent: Wednesday, November 23, 2016 10:36:33 PM
Subject: AeroElectric-List: WIRE QUALITY

 
Hello,

I have attached a photo of wire that I have put into my project.

The designation is M22759/34-14 90484, printed in green on the white insulation. Please note the double insulation, a blue sheath under the white.
I have not noticed this double insulation on any of my other wires.

The problem I have is that the wire seems to be badly tarnished and I am unable to solder it. I used paste flux on a small piece and the solder still will not stick.
The sample is from the center on a long piece that has been cut so it is not as if the end could have corroded.
All my other joints on this wire have been crimp joints and I just did not notice the bad discoloration on this wire.

My question is will the crimped joints be OK?

Is this wire OK or could it be counterfeit?

Thanks

Mike

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henador_titzoff(at)yahoo.
Guest
PostPosted: Thu Nov 24, 2016 9:08 am    Post subject: WIRE QUALITY Reply with quote
Mike,
Others have mentioned good ideas, but are you sure you're using the correct solder?  If this wire is old, it may require solder with lead. If the solder you're using meets European RoHS, it has no lead. Most solder today is RoHS compatible. One way to tell is RoHS solder requires a much higher temp to melt, and it doesn't melt quickly because the transition range is wider.

Henador Titzoff

Quote:
From: Mike Pienaar <mike(at)vision499.com>
To: aeroelectric-list(at)matronics.com
Sent: Thursday, November 24, 2016 1:36 AM
Subject: WIRE QUALITY



Hello,

I have attached a photo of wire that I have put into my project.

The designation is M22759/34-14 90484, printed in green on the white insulation. Please note the double insulation, a blue sheath under the white.
I have not noticed this double insulation on any of my other wires.

The problem I have is that the wire seems to be badly tarnished and I am unable to solder it. I used paste flux on a small piece and the solder still will not stick.
The sample is from the center on a long piece that has been cut so it is not as if the end could have corroded.
All my other joints on this wire have been  crimp joints and I just did not notice the bad discoloration on this wire.
 
My question is will the crimped joints be OK?

Is this wire OK or could it be counterfeit?
 
Thanks

Mike










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stein(at)steinair.com
Guest
PostPosted: Fri Nov 25, 2016 8:46 am    Post subject: WIRE QUALITY Reply with quote
If your wire looks like that the entire length then just toss it. When it looks like that, it’s often surplus garbage someone sells online that has been water damaged/submerged for extended periods of time. Of course I’m admittedly biased, but I always wonder why people try to step over a dollar to pick up a dime when it comes to just using the right wire on your plane to begin with. You can wire the entire airplane with brand new, high quality, known quantity wire for single hundreds of dollars.

On top of that, the double shielding is a pain to work with now and in the future.

Just my 2 cents as usual.

Cheers,
Stein


From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Mike Pienaar
Sent: Thursday, November 24, 2016 12:37 AM
To: aeroelectric-list(at)matronics.com
Subject: WIRE QUALITY


Hello,

I have attached a photo of wire that I have put into my project.

The designation is M22759/34-14 90484, printed in green on the white insulation. Please note the double insulation, a blue sheath under the white.
I have not noticed this double insulation on any of my other wires.

The problem I have is that the wire seems to be badly tarnished and I am unable to solder it. I used paste flux on a small piece and the solder still will not stick.
The sample is from the center on a long piece that has been cut so it is not as if the end could have corroded.
All my other joints on this wire have been crimp joints and I just did not notice the bad discoloration on this wire.

My question is will the crimped joints be OK?

Is this wire OK or could it be counterfeit?

Thanks

Mike

- The Matronics AeroElectric-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List
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