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Re: New spark record



Original poster: "Jason Johnson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <hvjjohnson13-at-hotmail-dot-com>

The other night was not a fluke!! I set up the coil and showed everyone
tonight. The coil was a huge hit with everyone despite them all standing
outside in the below zero weather. I had several more strikes to the ground,
and even though I haven't changed a single thing except clean the gap
electrodes there were far fewer racing sparks than there were last night. I
think that I may even be able to cure them by putting on another coat or two
of poly (I've got one very thin coat on right now, just enough to hold the
windings). The only problem is that I will have to manage to keep the garage
warm enough for a day or so to use polyureathane. I've got several heavy
hits to the primary and even one directly to the MMC  but everything just
keeps on going. The ground is not any better than last night. If I can
upgrade the ground I think it will help with the racing sparks too.
Tommorrow after a christmas party I have to attend I will start on the page
for my MOT coil.

Happy Holidays
Jason Johnson

----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, December 24, 2000 12:46 PM
Subject: Re: New spark record


> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<FutureT-at-aol-dot-com>
>
> In a message dated 12/23/00 6:45:44 PM Eastern Standard Time,
> tesla-at-pupman-dot-com writes:
>
> Jason,
>
> That's an excellent result using just two MOT's.  I used 4 of them
> in series and only got 63" sparks, at 4kVA.
>
> To have the coil running on a 15amp 120 volt line along with the
> compressor too, and get 6.5 foot sparks, is truly amazing,
> especially with the MOT, small secondary and somewhat low
> voltage.  It shows that the 28awg wire can perform well even with
> longer sparks than my 42" TT-42 sparks.  Undoubtedly the large
> toroid is helping too.  My similarly sized secondary develops racing
> sparks when I reach 63" sparks or so at 120 bps.  This suggests to
> me that your coil is firing at a higher break rate, which makes the
> results all the more spectacular.  Are you saying that the coil
> produces 5 simultaneous streamers?
>
> Are you using a voltage doubler with the MOT's?  Do you have
> a website that shows the coil?
>
> John Freau
> --
>
> > Original poster: "Jason Johnson by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <
> > hvjjohnson13-at-hotmail-dot-com>
> >
> >  Last night I ran my rebuilt 4 inch coil, preparing it for showing
everyone
> >  that'll be at my house tommorow for christmas celebrations. The basic
coil
> > is
> >  unchanged electrically, but has a nice new primary and some mechanical
> >  improvements over the last coil. Its been a while since I posted my
coils
> > specs
> >  so here they are again:
> >
> >  power supply: two series MOTs for 4800 volts
> >  capacitor: 110nf 18kvdc MMC
> >  spark gap: airblast gap with two 1/4" brass threaded rods, 2cfm -at- 35
psi
> or
> > so
> >  primary: 7" i.d. 1/4" tube w/ 1/4" spacing cable tie design
> >  secondary: 4 inch PVC wound for 23 3/4" w/ 28 guage magnet wire
> >  topload: 4"x17" al dryer duct with 8"x23" al dryer duct sitting
directly
> on
> > top
> >
> >  Power input was from a 120 volt 15 amp circuit also with the air
> compreesor
> > on
> >  it. I ran it for around 30 min (not continuos) last night in the -5
degree
> >  weather. Longest sparks (about five of them) of the night were at least
6
> > feet long.
>
>
>
>