Re: More rotary gap questions...

Subject:      Re: More rotary gap questions...
      Date:   Mon, 21 Apr 1997 17:39:31 -0400
      From:   "Edward J. Wingate" <ewing7-at-frontiernet-dot-net>
        To:   Tesla List <tesla-at-pupman-dot-com>
> On Mon, 14 Apr 1997 14:33:04 -0600 Phillip M. Jarvis
> <jarvisp-at-bee.d93.k12.id.us>
> > I just received information from Ross Engineering Corp. (408) 377-4621.
> > In addition to making static spark gaps at $450 a pop,
> $450.00 a pop for static gaps! Geezz at that price it should be a
> rotary gap with tungsten carbide gap points!

Hi Alfred and all,

I have just one small statement. Please don't confuse tungsten carbide
with metallic tungsten, they are two very different materials with two
very different uses. Tungsten carbide is used for cutting tools and must
be machined with a soft green (silicon carbide) wheel or diamond wheel
and is not a good material for spark gap studs because it is very
brittle and not a very good conductor. Metallic tungsten on the other
hand is an excellent conductor and has a very high melting point (6000
degrees+ F.) making it a superb choice for rotary gap studs. It works
well for fixed gaps too.

Safe Coiling Always,

Ed Wingate

> > they make toroids, spheres and corona nuts for spark gaps. What interested
> > me are the non melting carbon spheres with tapped holes for screws/bolts.
> > The sphere diameters range from 1 cm to 30.5cm. The advantage of carbon is
> > that it does not "pit" or "peak", and handles the heat very well. These
> > were made specifically for spark gaps, lightening arresters, and other
> > high current applications in pulse forming networks.
> Unless they do something to that carbon that I've never heard of it's
> going to pit worse than any metal! ever look at the carbon rods in an
> arc light! They look like the ends have been gnawed on!
>                                Sincerely
>                                 \\\|///
>                               \\  ~ ~  //
>                                (  -at- -at-  )
>                         -----o00o-(_)-o00o-----
>                            Alfred A. Skrocki
>                    alfred.skrocki-at-cybernetworking-dot-com
>                              .ooo0   0ooo.
>                         -----(   )---(   )-----
>                               \ (     ) /
>                                \_)   (_/