Re: [TCML] Hyperbaric Gap - Was Sphere Topload Coil

[Yurtle Turtle <yurtle_t@xxxxxxxxx>]

I doubt if this qualifies as a true hyperbaric gap, as
it isn't contained inside a pressure vessel, but it
did perform much better as a blown gap than a sucker
gap. I used this gap on my 4" coil for years with no
problem:

http://www.hot-streamer.com/adam/sparks.jpg

Once I built my 10" coil, this gap outperformed my
undersized srsg. Then I bought the srsg from David and
the VFD and motor from you, which allowed me to go
arsg. I had some kids yelling for me to crank it up
more, so I did. I have a 7.3 amp Rigid Shop-Vac, but
knowing me, I was prolly feeding it 140 volts. I don't
recall exactly how high I ran it, but my welder goes
as high as 75 amps when hooked up to my pig JL. I was
feeding the pig 280 volts. Once I got to a point, more
current wasn't producing longer streamers, but it
seemed to be brighter and louder. It was dark, so I
feared the worst once it stopped cold at high power.
Once I saw the melted solder and PVC, I was relieved.

http://www.hot-streamer.com/adam/bigass_coil/Meltdown.jpg

Adam

--- bartb <bartb@xxxxxxxxxxxxxxxx> wrote:

> Hi Adam,
> 
> I built this same gap style for a small coil and it
> worked fine. I used 
> a fan out of a microwave and coupled it to the pvc.
> Since this was low 
> power I wasn't worried. I'm surprised your gap could
> handle better than 
> 2kva even the the shop vac. Interesting.
> 
> Bart
> 
> Yurtle Turtle wrote:
> > I've run mine at 5 - 6 kVA with no problems:
> >
> > http://www.hot-streamer.com/adam/shopvac_gap.jpg
> >
> > I hook it up to a Shop-vac and a variac. It
> prefers
> > pressure over vacuum. None of the fittings are
> glued,
> > which allows me to adjust the spacing easily.
> >
> > Several years ago, during a Halloween run, I
> believe I
> > cranked it up to 10 or so kVA:
> >
> >
>
http://www.hot-streamer.com/adam/bigass_coil/Meltdown.jpg
> >
> > It didn't like that, though the coil ran great
> until
> > the solder and PVC melted.
> >
> > Adam
> >



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