Re: SSTC SSmoke!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net> 

You could try sanding down the burned portions, then coating them in epoxy.
Or you could clip the coil out where it is dammaged and rewind and splice
back together, or you could just wind a new one ;-)

Regards - Jim Mitchell
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, January 19, 2004 12:01 AM
Subject: SSTC SSmoke!


 > Original poster: "Shaun Epp" <scepp-at-mts-dot-net>
 >
 >   Well, i was testing my Plasmasonic II board in single ended mode, First
 > light in single ended mode. I was getting lots of power and sparks off the
 > breakout when low and behold; I SMELLED SMOKE!.   My Cousin who was
standing
 > behind the coil pointed out flashing inside the primary coil PVC form.  I
 > was getting flash over between my primary and secondary.  It may have
ruined
 > my good secondary.  I could cry!! To build that one I dried out the PVC
form
 > before coating it inside and outside, then winding with a jig, then I
coated
 > that thing with 13 coats of polyurithane letting it dry fully in between
 > sanding lightly, I spend 3 weeks making that my secondary as perfect as I
 > could.   The primary was wound around a 5 1/4 inch white PVC pipe, I made
it
 > a foot long to prevent flashover.  The arc went through all the
polyurithane
 > on my 4 1/4 inch secondary, and burned into the inside of the primary form
 > which is about 3/16 inch thick, wow.   Before I noticed flashover I was
 > getting loud humming and buzzing off of the  discharge at the top of the
 > coil.  14 inch bushy discharges, it was really  neat. II could draw a
fiery
 > plasma arc with a grounded stick, It must have  been close to a 3/8 inch
 > thick.
 >
 >   An interesting thing happened when I started.  I still had the spiral
 > primary mounted for spark gap use, and some leads with spade connectors
 > comming off the spark gap mounted under the coil.  Anyway one of the
spades
 > was touching the lenolium on the floor and it arced through the floor.
 > Oops!  I was only 30% on the variac when this happened.  There's alot of
 > induced power here!
 >
 >   What are the chances of fixing my secondary?  Have other people fixed
them
 > before after flashover?  Mine is burned!, some carbonized poy about a 1
1/2
 > long strip 4 inches from the base of the coil.  I sanded down some burnt
 > poly away, but it's hard to tell if I got it all.  There is heat marks in
 > the polyurithane from the arcing.
 >
 >
 >   Shaun Epp
 >
 >