Re: 2nd light of the "Green Monster"

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Rob,

Well, I haven't ran the specs through some of the fancy computer 
programs available to get all of the measurements of the coil's
parameters. When it comes to coil design and construction, I tend to 
be more practical than theoretical (I just like to see BIG sparks;^)
but I can give some physical specs on it:

TOROID:  12x56 made from  4 sections of 6 ft extended length 12" 
aluminum flex duct. available from
                 McMaster-Carr.

SECONDARY COIL:  1260 turns of #19 AWG green enameled magnet wound on 
49" of a 12.5"  OD
                                     gray PVC  duct pipe. Finished 
coil then coated with several coats of Min Wax Spar
                                     Varnish. The bottom winding of 
the secondary coil sits at 5/8" above the plane
                                     of the primary coil.

PRIMARY COIL:  12 turns of 5/8 OD copper tubing wound in the classic 
Archemedian spiral with about 1/2"
                             spacing between adjacent turns and the 
innermost turn at 15" dia and the outermost
                             (12th) turn at 40" in dia.  The strike 
shield is also made of 5/8" OD copper tubing and is
                             about 40" in dia and is elevated about 
4" above the plane of the primary coil. The primary
                             coil is tapped at about 10 2/3 turns 
for optimum tuning with the 12x56 toroid.

PRIMARY CAP:  0.1 vFD, 50 Kv Hipotronics commercial pulse cap 
obtained from Jeff Parisse of KVA
                             Effects.

POWER TRANSFORMER:  240/14,400 volt, 15 KVA dual HV bushing, pole 
mount distribution transformer.
                                                There is an 18 kV 
rated distribution arrester across the HV output bushings
                                                of the pole "pig" 
transformer to act as an overvoltage clamp in palce of a safety
                                                gap.

CONTROL:  (2) 240/0.280 volt, 28 amp 1256D powerstats paralleled. 
Ballasting is via the guts of a 225
                     amps Lincoln AC Arc Welder set at 225 amps and 
submerged in oil inside of an old tank of an
                     x-ray HV divider. ASRG motor control through a 
120/0-140 volt @ 10 amp panel mount variac.

SPARK GAP:  ASYNCH rotary type made with a 0-130 VDC, 2.5 HP , 3500 
rpm treadmill duty electric motor
                         that drives an 11"x1/2" electrical grade 
fiberglass disc with (8) 3/8"x2.5" t.c.( tungsten carbide)
                         drill blanks for rotary electrodes.  The 2 
stationary electrodes are 1/2"x3" t.c.drill blanks
                         mounted in a 1.25" square x2" long brass 
pillar block.  The ARSG is seriesed with a forced
                         air cooled RQ type stationary gap.  The RQ 
gap consist of (4) 2"dia x 4" long copper
                         pipe segments forming 3 seriesed gaps that 
are 1mm to 2mm wide. The RQ style gap was added
                         as an additional item to the original plan 
due to excessive heating of the rotory gap electrodes.
                         The t.c. drill blanks and the electrical 
grade fiberglass material for the rotory disc were pur-
                         chased from McMaster-Carr.

FILTERING: This is achieved through a 3~ 440 volt @ 80 amps per phase 
line filter where the "hot"
                     lines of the 240 volt input are ran through 2 
of the 3 phase positions of the 30 lb line filter.

MISC: 60 amp cicuit breaker main power switch, panel metering of 
voltage and current, switched contactor
           to energize/de-energize the main transformer. 
Transmission lines from pole pig to coil base are
           a  60 ft. long pair of 75 kV rated x-ray cables with the 
outer metal braid sheathing grounded to
           mains ground. RF grounding via 6 ft of 2-0 AWG welding 
cable attached to (3) 8 ft long x 5/8"
           diameter copper clad ground rods driven nearly all the 
way into the soil. The  ground rods are
           interconnected with #4 AWG solid copper ground wire.

Hope this gives you a better idea of the parameters of this coil until I
can get some pics to hot-streamer.com, hopefully this upcoming week.

David Rieben

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, August 06, 2005 2:33 PM
Subject: Re: 2nd light of the "Green Monster"


> Original poster: Rob Maas <robm@xxxxxxxxx>
>
>
> > Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>
> >
> > Hi all,
> >
> > Just wanted share the experience of firing off the
> > "Green Monster" (so named because of the 1260
> > turns of #19 AWG green enamel magnet wire
> > wound on the 12x49 secondary coil).
> > ....
>
> ......
>
> > front door :^0  I didn't really get a chance to properly measure
> > the spark length but the 12x56 toroid tophat stands a
> > good 7 1/2 ft above the ground and I was getting multiple
> > ground strikes that reached out a considerable distance
> > from the coil base before striking the ground. I would have
> > to estimate in the 10 to 12 or 13 ft range!
>
> Hello David,
>
> It seems your magnifier is definitely working; congratulations!
> Could you provide some data of your coil, like L1-3, C1-3 (or
> some dimensions of the various parts) and, in Antonio's nomenclature,
> what mode (k:l:m) are you aiming at?
>
> best regards,   Rob Maas