RE: D'oh! Dead NST!

["Duke, Ronn (CCI-San Diego CCC)" <Ron.Duke-at-xxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

Sundog,

I hope you're not going to throw those burnt NST's away. They can be rewound
with a little patience and a moderate amount of time. A mechanical feed
winder can be made with common items and a few common power tools. I've done
it! I rewound a 15kv Franceformer with 30 ga. wire and Kraft paper(from Home
Depot.) (that's the thickest wire I could use at 10,000 turns and still have
the coil fit on the core.) I built my winder so I could wind secondaries as
well as transformer coils. Terry Fritz used to have a winder he built on his
old web site that gave me some ideas. Skateboard bearings are cheap and work
very nicely for all your rotating parts. Once set up, you could wind a 6 to
10 thousand turn secondary in 4 or 5 hours. Hey, who ever said Tesla coiling
is time efficient.  Anyway, is would be a waste of a good core if you had to
trash it.
Keep on coilin'
Dr. Evil
(I'm not really)

	-----Original Message-----
	From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
	Sent:	Saturday, November 11, 2000 8:03 PM
	To:	tesla-at-pupman-dot-com
	Subject:	D'oh!  Dead NST!

	Original poster: "sundog" <sundog-at-timeship-dot-net> 

	    Hi all,

	Well, I got around to making 2 brand-spankin new toroids, 7x20 and
	7x21 if my memory serves me right.  I stacked these up on my 8"
	coil, and fired off the thing.  Ran great, got good hot 4' arcs all
	over the garage door, lots o' ozone, a lot of crash-and-bang, and
	life was good!  Then the sync gap sputtered, and output fell to
	zip-point-zilch.  Post-mortems on the NST's in question weren't
	good.  2 more died a pretty horrible death, carbon-tracking all the
	way out to the bushing (I know this because one popped it was so
	hot), and generally becoming useless.  I'm now down to 2 trannies
	out of 6....12/60....ugh
	Needless to say, a measley 2' spark from a 12/60 bank isn't
	impressive.  Especially when I have to back off to 1 toroid.... So
	I'm gathering my resources, buying parts, and am planning a good
	big coil.  Or at least a good 8" coil that really throws out hot
	arcs.  I'm looking at tinkering with LTR caps at multi-kva levels.
	Results on the small coils I run has been great, so I'm going to
	try it on the big time.  I see the dead NST's not as a reason to
	get upset, but to smile real sisinter and plan on bigger and better
	coils :)

	                                                Keep it safe!

	Sundog