Thanks guys!,
Carl, that sounds like a great technique, unfortunately I already
made the repairs, and it is epoxied in place... Well if it gives me more
trouble this weekend, I'll keep a drill and soldering iron handy.
Hopefully the test goes well tonight...
Scott Bogard.
On Thu, Sep 18, 2014 at 10:34 AM, Carl <cn8@xxxxxxx> wrote:
> Hey--
>
> I had to repair a 12" dia secondary with a similar problem, and another
> with a 2 inch cut across the turns. In each case I took off all damaged
> turns, then drilled a small hole in the open area. I cut each adjacent
> turn to about 2" longer than the length to reach the hole, stripped the
> wire back about 1 1/2 inches and stuck both ends into the hole. Then I
> reached inside the secondary and twisted the wires until they were tight on
> the outside. That leaves a wire reaching diagonally across the damaged
> area. You can fold over the twisted ends, but the interior of the coil has
> only a longitudinal E-field, so it should not corona. The repairs both
> worked, but the 2" wide one had corona from the diagonal wire and was the
> source of a few sliding sparks on the coil. I built a nice container for
> the coil out of a cardboard concrete form tube.
>
> In each case, we were able to rewind each section using the same joint
> technique at each end.
>
> Good luck!
>
> ---Carl
>
>
>
>
>
> -----Original Message----- From: Scott Bogard
> Sent: Wednesday, September 17, 2014 8:38 PM
> To: Tesla Coil Mailing List
> Subject: [TCML] Emergency Secondary repair, also archives down???
>
> Hey all.
> So I finally burnt up my first secondary coil, (hopefully my last
> also) and I was going to show it off on Saturday (not a paid gig, but still
> I'd rather not disappoint). I was going to look up the accepted procedure
> on repairing them in the archives like a good boy, but they didn't work on
> my machine, I got a 404 error... Well the error occurred when I tried to
> "search the site including archives". Anyway, is there any last second
> pointers for the uninitiated? The coil is a 4*18 wound with 28 AWG, is
> there any chance of saving her? The turn got hot and smoked a bit, before
> glowing red, it is pretty bad, but the damage seems confined to about 3
> turns or so, about 2/3rds up the side, it suffered a fall at some point and
> despite re-coating it with polyurethane, well you know the story.
>
> Scott Bogard.
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