RE: Disassembling transformers

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

I think he meant that it would loosen the frozen tar
closest to the windings. A 15/30 is roughly 450 watts.
Though I've never tried that method, it should be
enough heat to soften the tar closest to the windings.

Adam

--- Tesla list <tesla@xxxxxxxxxx> wrote:

> Original poster: "Lau, Gary" <Gary.Lau@xxxxxx>
>
> Since it's current-limited, running an NST with the
> secondary shorted
> won't draw any more power than its faceplate rating.
>  So I don't know
> how that could result in melting of the tar.
>
> I used an enclosed Weber BBQ grill to cook my NST
> and melt the whole
> stinkin' mess - a process I hope I never have to
> repeat!  I used paint
> thinner for the final dissolve.  If someone had
> poured that mess onto my
> driveway, they would definitely be off my Christmas
> card list.
>
> Regards, Gary Lau
> MA, USA
>
>
>  > Original poster: "Dave Halliday"
> <dh@xxxxxxxxxxxxxx>
>  >
>  > Richard Quick suggested freezing but then running
> the transformer with
> a
>  > short across the HV output for an hour or two.
> This will warm the
> core
>  > enough so that the chunks of frozen tar can be
> pulled away without
>  > damaging the windings.
>  >
>  > He used kerosene (a lot less dangerous) and
> mentioned that the
>  > tar-kerosene mixture was an excellent sealer for
> asphalt driveways if
>  > you have one.
>  >
>  > Dave
>  >
>  >  > -----Original Message-----
>  >  > From: Tesla list [mailto:tesla@xxxxxxxxxx]
>  >  > Sent: Thursday, February 09, 2006 9:13 PM
>  >  > To: tesla@xxxxxxxxxx
>  >  > Subject: RE: Disassembling transformers
>  >  >
>  >  >
>  >  > Original poster: "Robert Hanford"
> <pomnept@xxxxxxxxxxx>
>  >  >
>  >  > Hi,
>  >  > I froze my NST, chipped away some or the tar,
> then soaked it
>  >  > in gasoline til
>  >  > almost all the tar was gone. Don't remove all
> of the shunts.
>  >  > There is good
>  >  > internet material on this. I think a lot of us
> have stories about
> this
>  >  > particular aspect of coiling.
>  >  > Good luck,
>  >  > Robert Hanford
>  >  >
>  >  > -----Original Message-----
>  >  > From: Tesla list [mailto:tesla@xxxxxxxxxx]
>  >  > Sent: Thursday, February 09, 2006 10:38 PM
>  >  > To: tesla@xxxxxxxxxx
>  >  > Subject: Disassembling transformers
>  >  >
>  >  > Original poster:
> norman@xxxxxxxxxxxxxxxxxxxxxxxxx
>  >  >
>  >  > Has anyone tried to open up an OBIT or NST and
> dissolve the
>  >  > potting material
>  >  > in
>  >  > order to remove the magnetic shunts?  If so,
> could you explain how.
>  >  >
>  >  >
>  >  >
>  >  >
>  >
>
>