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Old 01 February 2009, 08:11   #1
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Proper Name

I refer to it as corrosion creep, It's when copper wire gets moist and corrodes green and creeps all the way back up the cable by capillary action I guess.

Does anybody know the proper term for this

TA
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Old 01 February 2009, 11:14   #2
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Old 01 February 2009, 11:35   #3
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Black Wire is another name I have heard used.

I find trailer wiring is always bad for this when all the copper strands turn black after a while.


Whats this on your radar GPS etc?

Is it on Billy?
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Old 01 February 2009, 11:37   #4
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verdigris
That's what the green stuff is called-but I think what Stu is talking about is the action of the corrosion creeping up inside the cable.

The word propagation springs to mind?
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Old 01 February 2009, 12:11   #5
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Does anybody know the proper term for this

TA

A right pain in the arse.

Its amazing how far up a loom this can travel.

When I brought my Suzi 200 the loom that came with it was affected by blackening at the control unit end, all the dozen or so wires.

No problem thought I, the loom is a few meters too long at @7M, I'll cut it back to good wire. When I discovered I'd need to scrap the loom I cut it back in 1m intervals all the way back to the plug on the other end and the whole thing was affected.

I admit to having bodged an urgent repair a couple of times when required.
The black wire won't solder, but if you cut it back to reveal a bit more conductor, then fan out the seperate strands on a flat surface, a bit of very fine wet and dry can be used to clean up both sides of the 'fan'. When twisted back together the solder will take.
I must stress of course that this is a TEMPORARY repair when needed, the joint hasn't properly taken, plus the wire is buggered and won't last much longer.

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Old 01 February 2009, 13:15   #6
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A right pain in the arse.

fan out the seperate strands on a flat surface, .

And dip them in spirits of salts, taking care to wash them in fresh water afterwards. They come up like new, but it's still only a temporary repair, and the reason why "tinned" wire should always be used!
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Old 01 February 2009, 13:17   #7
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I can't tell you how much it winds me up that looms are not made from tinned copper. I've got creep in the loom of the works CAT and It's taking a long time to fix. Mostly cos the gap is narrow and I ain't
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