Re: vacuum gap

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

Original poster: "Jason Petrou by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jasonp-at-btinternet-dot-com>

Jan,

This kinda thing is almost perfect for your coil - its exactly what I use
(except i use a turbine from an oil pump at 125W) and it works even better
than an RSG!!!

Happy coiling!!!

Jason

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, April 18, 2001 1:28 AM
Subject: vacuum gap


> Original poster: "Jan Ohlsson by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<jan.ohlsson-at-mbox319.swipnet.se>
>
> I have made a gap from five 1 1/2" by 5" Cu-pipes, gapped at 0.02" between
> each pipe. The pipes are mounted on a box wich is evacuated by a radial
fan
> with a 200 W motor. Air is sucked thru the gaps into the box, and then to
> the fan. The fan is fed from a dimmer, and is quite powerful on full
blast,
> almost like a vacuum cleaner.
>
> Is this what is generally called a "vacuum gap" on the list?
>
> Would you expect this gap to be sufficient for a coil fed from a NST stack
> of 8 kV, 310 mA with a 55 nF primary condensor?
>
> I get 45" streamers at the moment, thick, white and really noisy, but the
> length is really limited by my small garage as the arcs hit walls and
> cieling. I have to try the coil with greater distance to walls and roof to
> see what it can do.
>
> Jan
> Stockholm,
> Sweden
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