Re: New NST failure mode

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

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
 >
 >  > Original poster: Ed Phillips <evp-at-pacbell-dot-net>
 >  >
 >  > Tesla list wrote:
 >  >  >
 >  >
 >  > Must have been the latter.  Did the bolts turn while you tightened the
 >  > nuts?  A couple of times I've had good luck repairing this sort of thing
 >  > by melting the tar (hope yours is tar encapsulated) away from the inside
 >  > of the insulator and splicing the broken wire.  Usually the break occurs
 >  > right at the connection to the bolt.  Melting is done with a combination
 >  > of a hot air gun and a 500 watt soldering iron.  Smelly but easy to
 >  > control and clean up.
 >  >
 >  > Ed
 >
 > I wish I knew.  I wasn't looking for this.   It would be too bad that they
 > didn't key the insulator so the bolt could not turn (if this is indeed what
 > happened).  I will probably try to melt the tar from the NST using a heat
 > gun (heat shrink type) or try to bake in in the oven at low temp.   Any idea
 > what temp the tar melts at??
 >
 > Gerry R
 > Ft Collins, CO

	Suspect the melting point varies with the composition but my guess is
around 300° F.  Someone here should know better.  Start by melting the
tar only at the inside of the insulators and keep pouring it into
something to save it until you can see the bolt coming out of the
insulator and the wire from the secondary.  No more is necessary.

Ed