snippy
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| posted on 30/5/13 at 09:04 AM |
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Soldering issues on old loom
Trying to do some repairs to an old mk1 Escort loom for the Jago. The old loom won't take the solder. I've tried cleaning up the exposed
wires prior to heating them but its as if the old wires don't get hot enough to take the solder. Any tips? Got lots to solder on the loom.
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avagolen
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| posted on 30/5/13 at 09:11 AM |
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I have heard that dipping the ends in the chemical used for etching homemade PCB's works wonders.
Not too long though or you end up with no wire......
HTH.
The Answer for everything, but never the last word....
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Aaron_n_Sim
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| posted on 30/5/13 at 09:13 AM |
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Are you using plenty of flux paste?
Work to Live don't Live to Work
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cliftyhanger
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| posted on 30/5/13 at 09:18 AM |
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Old exposed copper wire gets corroded, so that really need cleaning off. Had some success with active flux, but sometimes I have resorted to cutting
th ewire back until I find bright metal. And letting a new bit in.
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r1_pete
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| posted on 30/5/13 at 09:38 AM |
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I have in the past used fine emery paper, and gently rubbed the bared wires whilst rolling them across a finger.....
Wears your skin away if you do a lot though.....
Active flux works, but you have to be meticulous and clean any residue afterwards, I prefer only using flux cored solder.
[Edited on 30/5/13 by r1_pete]
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mookaloid
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| posted on 30/5/13 at 10:03 AM |
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I think that if the loom generally is deteriorating to that point then it's new loom time. If it is just a few extremities then cut back to good
and replace sections.
Not worth struggling on with IMHO
Cheers
M
"That thing you're thinking - it wont be that."
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rx7locost
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| posted on 30/5/13 at 03:30 PM |
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The fact that the individual strands are oxidized is no indication that the loom is about ready to fail. Cleaning up the wire ends to be ready for
soldering is a straight and forward proposition. You can mechanically scrape or sand the strands; or you can use more aggressive chemical means. Just
be sure to rinse thoroughly after using the chemical to remove any remaining acid. You might want to think about neutralizing it with a mix of baking
soda and water before soldering. Once clean, any rosin core flux (not acid) will do just fine. I have used a toilet bowl cleaner over on our side of
the pond called "The Works". It is basically 16% Hydrogen Chloride. It does a quick and wonderful job of cleaning to copper oxide from the
wires or even older copper plumbing for that matter.
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myke pocock
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| posted on 30/5/13 at 05:23 PM |
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I had the same issues when building my Midge. I cleaned the bare wire ends with a brass suede brush. Found that it was not too agressive and did the
job just fine.
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plentywahalla
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| posted on 30/5/13 at 05:39 PM |
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Its a common problem on wiring on boats.
We dip the wire in Polinox which is the chemical oxide stripper used when welding stainless steel to remove the heat discolouration. Any decent
welding business would have it and give you a drop.
Rules are for the guidance of wise men ... and the obedience of fools. (anon)
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