Re: Static Air-blast gap.

From: 	Peter Electric[SMTP:elekessy-at-macquarie.matra-dot-com.au]
Reply To: 	elekessy-at-macquarie.matra-dot-com.au
Sent: 	Friday, August 29, 1997 3:25 AM
To: 	Tesla List
Subject: 	Re: Static Air-blast gap.

Tesla List wrote:

> From:   Phil Chalk[SMTP:philoc-at-ozemail-dot-com.au]
> Sent:   Wednesday, August 27, 1997 4:17 AM
> To:     'TESLA List'
> Subject:        Static Air-blast gap.
> Hi all,
> I'm back on the air again, after a long absence.
> I have been considering making a static gap from two rods of solid
> brass (say).  No firm details yet, but let's say about 1 - 1 1/2"
> diameter.
> One would be attached to a threaded rod to allow for adjustment of gap
> distance.  The other, probably, fixed.  The two round end faces
> parallel.  Just like 'normal'.
> Now here's the new bit.  The fixed electrode would be drilled right
> through down its central axis - about a 1/4" dia. hole.  Compressed
> air would be blown through this hole; it would hit the face of the
> movable electrode, then be forced to exit from the edges of the gap -
> hopefully fairly evenly.
> The air flow would probably need to increase with increasing gap
> distance, but this could be easily arranged.
> Hope this explanation gives you the picture.
> Any comments ?
> Regards,
> Phil Chalk.
> (P.S. G'day  Rodney & Peter in ACT.  Will mail privately soonish.)

Hi Phil, was wondering what happened to you.

Your design sounds fairly similar to my gap but I dont have the hole
down the center, I had the compressed air coming out of  a jet
perpendicular to the gap. It worked very well, especially at 30PSI or
more but the thing was incredibly noisy, and only lasted 30 seconds or
so before the compressor started to lose pressure. I have now gone to
using two fans from a Microwave oven. I reckon a vac cleaner motor might
be even better.


Peter E.