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Re: first coil help



Original poster: "Malcolm Watts by way of Terry Fritz <twftesla-at-qwest-dot-net>" <m.j.watts-at-massey.ac.nz>

Hello Ryan,
            There is either a big loss somewhere or you are still out 
of tune I would say. You should easily achieve breakout with the 
transformer you have. What steps are you taking to tune the coil? How 
is the secondary positioned relative to the primary?

Malcolm


On 17 Jul 01, at 7:58, Tesla list wrote:

> Original poster: "James Mathisrud by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <jrmathis-at-pressenter-dot-com>
> 
> 
> ok, well my coil is getting more powerful, but im still not getting
> breakout, here are my coil specs
> 
> Tank circuit
> power    1- 15kv 30ma nst
> gap         1 gap 2 1.5in brass electrodes quenched with 30psi set at 3/8
> in wide
> cap         7 saltwater beer bottle caps filled with about 10 oz. ea
> s gap      3 1/4in carrage bolts
> chokes   2  2in pvc pipes wound with #28 wire about 7 in long ea.
> primary   16 turn helical primary 1/4 in dia. spaced 1/4 in ea. inner
turn 8 in
>                 at 45deg angle tapped at 12th turn
> secondary-4.5 in pvc pipe wound with #22 about 21.5 in.long roughly 800 turns
> discharge terminal- tennis ball covered in Al duct tape
> ground 2-4foot copper clad rods
> im also using a 600 watt dimmer to run the transformer
> 
> so far im able to draw off about 2-3 in sparks, but im not getting any
> breakout. im starting to think that
> maybe i need more nst's because my system might be too big for the one i
> have also, i hope this isn't the
> problem, but maybe my primary it at too great of an angle. hope this helps
> 
> thanks for everyones contributions, you have all been very helpful so far
> and i look forward to getting
> this thing working one of these days.
> Ryan
> 
> > > im using a helical primary, the inner turn is 8in. i set up a ground next
> > to the coil, and im getting
> > > drawing 2-3 in. sparks. i added another bottle to my tank cap, i will
> > test that tonight. i aslso bought
> > > an 8 foot ground that i am installing also. my gap is the air blast gap
> > from richard quick. im using 2-
> > > 1.5 in electrodes, and i have about 30psi guenching it. thanks for your
> > help, ill try your suggestions
> > > tonight thanks
> >
> > >
> > >
> > > there are 16 1/4in diameter primary turns, spaced at 1/4 in. im using a
> > > fluorescent bulb, and my caps are 6
> > > beer bottles filled with about 10oz ea.of saltwater. not sure how to test
> > > the capacitance, will look into
> > > that. im using 1-15kv30ma nst
> > >
> > > thanks for your help jonathan, and the rest of coilers on this list
> > >
> > > Tesla list wrote:
> > >
> > > > Original poster: "James Mathisrud by way of Terry Fritz
> > > <twftesla-at-qwest-dot-net>" <jrmathis-at-pressenter-dot-com>
> > > >
> > > > im a new coiler, and i have been trying to tune my first coil, and
> have had
> > > > a few
> > > > problems. i am getting it to resonate, i know this because the
> lightbulb is
> > > > glowing, but i just can't seem to get any sparks to breakout, i have a
> > > > small sphere
> > > > discharge terminal, the secondary is 4.5in, 800 winds #22, the primary
> > is  tapped at 11
> > > > turns,
> > > > because that seems to be the best spot from the testing ive been
> doing, im
> > > > using
> > > > salt water caps, i have an air blast gap.thats set at about 1/2 in, im
> > > not sure
> > > > what the average spacing is supposed to be, but i keep opening it
> > farther and
> > > > farther, and the power of the coil seems to be increasing please advise
> > > > before i
> > > > break something!
> > > >
> > > > also, imy ground is a 1in copper water pipe, and is wetted down
> before each
> > > > use its
> > > > been driven about 1.5 feet into the ground i don't know if this may be
> > > > affecting it
> > > > or not. thanks for your help
> > > > Ryan
> 
> 
> 
>