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Re: Spark gap spheres

Original poster: "" <tesla@xxxxxxxxxxxxxx>

Hi All:

I may have something that would work.  After reading these posts I believe that
I'll try it on my next static gap.

What I have are beautifully spun, 2 piece two inch cu spheres, one shell is
crimped so that they fit together, this also lets you drill one shell for
mounting before assembling with either a few spots of solder or cu tape (which
I have - 3M brand).  Two inch is the smallest spun size I've been able to
source and the price is around 4 or 5 dollars each, depends upon quantity, plus
shipping which would be minimal.

Also, my website is back up, problems with my webserver and all.


John & Scottie Cooper



Quoting Tesla list <tesla@xxxxxxxxxx>:

> Original poster: "Dave" <dgoodfellow@xxxxxxxxxxxxxx>
> For spark gaps I like to use brass pull chain balls as found in the
> ceiling fan department. The balls have a 1/4 inch hole in one side,
> and at the opposite end of that hole is a smaller hole which is the
> right size to run an 8-32 tap. The larger hole on the one end makes
> for a better spark gap than a round ball. I tried to use 1 inch round
> brass balls on a gap one time, and the performance was miserable. It
> is important to use flat surfaces for spark gaps.
> Dave Goodfellow
> ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Thursday, August 17, 2006 9:21 PM
> Subject: RE: Spark gap spheres
> >Original poster: "Rich & DJ" <rdj@xxxxxxxxxxxx>
> >
> >I got mine at Home Depot in the lamp area , where they have the 3/8 27
> >rod and the switches and lamp parts.
> >
> >Rich, from the middle of Missouri
> >
> >-----Original Message-----
> >From: Tesla list [mailto:tesla@xxxxxxxxxx]
> >Sent: Thursday, August 17, 2006 5:59 PM
> >To: tesla@xxxxxxxxxx
> >Subject: Spark gap spheres
> >
> >Original poster: "Jonathan Peakall" <jpeakall@xxxxxxxxxxxx>
> >
> >Hi All,
> >
> >I know this has been discussed before, but I don't seem to be able to
> >find
> >the posts. Anyway, I need some brass or copper spheres, blind tapped
> >with
> >4/40 or 6/32 thread, 3/8" in diameter. I know someone on the list posted
> >a
> >link for reasonably priced ones. Anyone got that link handy? US$5 is the
> >cheapest I have found so far, and I need 20 or so.
> >
> >Thanks
> >
> >Jonathan
> >www.madlabs.info
> >
> >
> >