Re: rotary gap: disc with holes?

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

This has been tried, e.g. for radars in WWII time frame, and, as you
mentioned, erosion of the insulating disk is the problem.  The arc is
really, really hot, and what you basically wind up with is a plasma cutter
trimming the disk.  It's the transition from the hole/arc to arc over the
surface and edge of hole that is the trouble area.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, July 06, 2002 1:00 PM
Subject: rotary gap: disc with holes?


> Original poster: "Wells Campbell by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <wellscampbell-at-onebox-dot-com>
>
> hello,
>
> has anyone tried building a rotary gap with holes in the disc instead
> of electrodes? I was thinking about it, and it seems that the biggest
> problem would be the wear on the disc by the arc, but an arc it seems
> would wear an insulator less than a conductor, because electrons would
> not actually be entering / exiting the material. The post about phenolic
> discs for grinders got me thinking, with their nice evenly spaced holes,
> etc.
>
> has anyone tried this type of gap? I.m cobbling together a small one
> now, with plexi, no less, to study if the arc heats the material, etc.
> I'll post results.
>
> --
> Wells Campbell
> wellscampbell-at-onebox-dot-com - email
> (415) 430-2169 x3756 - voicemail/fax
>
>
>
>
>