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Re: Melting tar out of NSTs with a Weber (grill)-thanks



Original poster: "Mike" <mike.marcum@xxxxxxxxxxxx>

At $100 a gallon might as well have a shunted transformer custom made, or buy the laminations/nomex/wire and wind your own with all the work depotting is.

Mike


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Friday, May 05, 2006 8:44 PM
Subject: Re: Melting tar out of NSTs with a Weber (grill)-thanks


Original poster: "Thomas Coyle" <zxcasd@xxxxxxxxx>

Rumor has it that this stuff will dissolve epoxy:

<http://www.hisglassworks.com/pages/attack.html>http://www.hisglassworks.com/pages/attack.html

Of course, they recommend that you don't use it except in a full hazmat suit, but that never stopped me before (I have respirators, at least)...

My question is: what is used for the enamel on the wires?

I might buy a can of this stuff to see if it dissolves the enamel.


On 5/5/06, Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx> wrote:
Original poster: "" <<mailto:tesla@xxxxxxxxxxxxxx>tesla@xxxxxxxxxxxxxx>

Hello All:

Regarding the asphalt potted NST's, I've found the best way is to soak it in a
container of gasoline, you'll need to daily remove the loose or dissolved
asphalt but it does the trick.  The next step is to completely disassemble and
clean the plates (I'm referring to an 'E' type Franceformer). Then re-assemble
without 4 to 8 of the plates that go inside of the 'E' (the proper name for
those plates eludes me at this point).  I'm looking at one right now that came
out of a 15,000V, 60Ma Franceformer, it's measurements are:  7.25" X 1.25" X
Approx. 1/32" thick.

This increases the current through the xformer.  I would immerse the cleaned
xfrmr in oil and put 500pF bypass caps to each hi-voltage bushing, run to
ground (not your house ground, but an 8' ground rod).  Better yet is to use a
Terry Filter.

Also, from what I've heard, Franceformer has discontinued the production of
asphalt potted transformers, resorting to epoxy potting, which is anathemy to
our needs.

Cheers,

John & Scottie Cooper

<http://www.Tesla-Coil.com>www.Tesla-Coil.com



Quoting Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx >:

> Original poster: "Robert Hanford"
<<mailto:pomnept@xxxxxxxxxxx>pomnept@xxxxxxxxxxx>
>
> Thanks for the replies. The butane torch idea is interesting, would > propane
> work as well or is it too hot or not hot enough?
> Robert
>
> Depending on what you are trying to remove the tar from a butane
> torch is the best bet. Just pass the torch back and forth and let the
> tar run out. Watch road crews as they use torches to preheat road > surfaces.
>
> You have to remember that tar is made with petroleum and confining it
> in an oven you could get enough out gassing to create explosive
> atmosphere in the oven.
>
> Using a grill can do like an oven - the tar will out gas and the
> vapors can be ignited by the grill.
>
> Hope this helps
>
> Al Shumate
>
>
>