Re: [TCML] Windings Repair - Should This Work? Is There a Better Way?

[Yurtle Turtle <yurtle_t@xxxxxxxxx>]

First of all, I'm assuming you're talking about an
NST. If so, simply unwind the wire until you get past
the damaged portion. Then solder the thicker wire that
was previously used, back to the "new" end. Retape and
you should be good to go. It's not as hard as it
looks. Reading glasses help to get really close to see
the small wire. You will still need to pot it in
something, as I tried running several dry and I
experienced flashovers that didn't occur when potted.
I used paraphen, but others have used vasoline, oil,
and even the original potting.

Adam

--- Tedd Payne <teddp2@xxxxxxxxxxx> wrote:

> Hi,
> 
> I'm trying to solve a problem with a spark coil, but
> maybe the solution could also benefit coilers in
> some way.
> 
> I've exposed a small section of the outer layer of
> the high voltage secondary winding.  The wire is
> very small, I can barely see the individual strands.
>  Here's the problem:  3 or 4 of the strands are
> broken and I'd like to repair them.  I'm not trying
> to reconnect individual broken pairs, I think it
> would be good enough to just "short" all the broken
> ends together.  I don't think I can use a blob of
> hot solder because I don't think I can adequately
> prepare the ends to bond to the solder, and I don't
> want to risk heat damage to the surrounding area. 
> Also, access to the wires is limited, kind of like
> in a hole.  I don't think I want to use a conductive
> paint or glue, because if it doesn't work then I may
> have made things worse by adding something which
> would be hard or impossible to remove.  Here's my
> idea:  use finely powdered silver or copper to try
> to fill the area around the breaks, maybe using a
> little liquid carrier which would evaporate cleanly.
>  My thought is that enough powder would allow
> electrical contact among all the broken ends.  If
> that works, then I would probably seal the repaired
> area in some way.
> 
> So, do you think the powder would work?  Do you have
> a better idea?
> 
> Thanks in advance for your comments!
> 
> Tedd
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> 



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