Re: spark gap

• To: tesla-at-pupman-dot-com
• Subject: Re: spark gap
• From: "Jim Lux" <jimlux-at-jpl.nasa.gov> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Fri, 11 Feb 2000 11:57:13 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

The field strength is strongest at the edge on the end.  If you carefully
round the ends in it will probably help.  I have found that if you use a
wheeled type tubing cutter, it produces a slight turn in on the edge which
works very nicely to get rid of the field concentration at the end of the
cylinder.  A bit of sandpaper to take the sharp edge off also helps.

----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: spark gap
> Date: Thursday, February 10, 2000 2:51 PM
> 
> Original Poster: Parpp807-at-aol-dot-com 
> 
> Hi all,
> I have just completed and tested a multiple SG for my bipolar coil. I
used 
> eight copper
> sweat couplings, each of 1-inch diameter and gapped at 0.022 inches. The 
> problem
> is getting all these cylinders lined up and well behaved enuff so I can
gap 
> them to at least within
> 5/1000 of eachother. I wonder if anyone has developed a technique for
doing 
> this.
> 
> When I tested the gap, I noticed that all the sparks were on the circular

> edge of each cylinder rather than along the adjacent sides where I
expected 
> them to be. Isn't this where the spark should be to gain the advantage of

> cooler operation?
> 
> Happy day,
> Ralph Zekelman
> 
> 

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