Today's Message Index:
----------------------
1. 05:54 AM - Re: WIRE QUALITY (Charlie England)
2. 07:39 AM - Re: WIRE QUALITY (ashleysc@broadstripe.net)
3. 09:08 AM - Re: WIRE QUALITY (Henador Titzoff)
Message 1
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| Subject: | Re: WIRE QUALITY |
On Thu, Nov 24, 2016 at 12:36 AM, Mike Pienaar <mike@vision499.com> wrote:
>
>
> 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
Message 2
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| Subject: | Re: WIRE QUALITY |
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.
----- Original Message -----
From: "Mike Pienaar" <mike@vision499.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
Message 3
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| Subject: | Re: WIRE QUALITY |
Mike,
Others have mentioned good ideas, but are you sure you're using the correct
solder?=C2- If this wire is old, it may require solder with lead.=C2-
If the solder you're using meets European RoHS, it has no lead.=C2- Most
solder today is RoHS compatible.=C2- One way to tell is RoHS solder requi
res a much higher temp to melt, and it doesn't melt quickly because the tra
nsition range is wider.=C2-Henador Titzoff
From: Mike Pienaar <mike@vision499.com>
To: aeroelectric-list@matronics.com
Sent: Thursday, November 24, 2016 1:36 AM
Subject: AeroElectric-List: WIRE QUALITY
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{}-->=C2-Hello, =C2-I have attached a photo of wire that I have put int
o my project. =C2-The designation is M22759/34-14 90484, printed in gree
n 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 oth
er wires. =C2-The problem I have is that the wire seems to be badly tarni
shed and I am unable to solder it. I used paste flux on a small piece and t
he solder still will not stick.The sample is from the center on a long piec
e that has been cut so it is not as if the end could have corroded.All my o
ther joints on this wire have been =C2-crimp joints and I just did not no
tice the bad discoloration on this wire. =C2-My question is will the crim
ped joints be OK? =C2-Is this wire OK or could it be counterfeit? =C2-T
hanks =C2-Mike =C2- =C2- =C2- =C2- =C2- =C2-
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