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Re: Spark Gap Design Alternatives

At 10:57 PM 2/18/97 -0700, you wrote:
>Subscriber: paynet-at-interaccess-dot-com Tue Feb 18 22:49:46 1997
>Date: Tue, 18 Feb 1997 15:42:04 -0600
>From: "Tedd W. Payne" <paynet-at-interaccess-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Spark Gap Design Alternatives
>
>I'm planning a TC using a 12KV/30mA neon xfmr, .006-.009uF cap, etc.  For
>the spark gap I'm wondering about the following design as an alternative to
>a series of copper pipe sections:
>
>There would be 6 copper or brass disks, each about 1 inch diameter and 1
>inch long, all in a line, thus forming 5 gaps (visualize as a sliced
>salami).  Further, the disks would all have a 1/4-20 threaded hole thru the
>center, and would be on a 1/4-20 threaded nylon rod.  The faces on the disks
>would be lathe-turned and would be perpendicular to the length of the nylon
>rod.  The gaps could be adjusted like adjusting nuts on a screw.  The whole
>assembly might rest in a shallow "trough" in some insulating material. 
>
>My questions:
>
>1. Would the nylon stand up to the heat?  If not, is there a suitable
>material I could find threaded (or thread myself)?
>
>2. Would the 1 inch diameter and length be enough for good heat dissipation?
>   Would other proportions be better?
>
>3. Which would be better, brass or copper?
>
>4. Would the individual disks be likely to rotate (get out of adjustment)
>during use?
>
>5. Any other problems or considerations?
>

Yes, I see a problem. You will be cleaning the heck out of them (if you use
brass), they will burn easily and have a lot of build up of oxidation or carbon.

Copper is much better for a gap but there is also the mighty tungsten gap!

                                       Regards,
                                            Kevin Nardelle

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