Re: 2nd Coil FIrst Light part 2???

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Original poster: "raven0075 by way of Terry Fritz <twftesla-at-uswest-dot-net>" <raven0075-at-home-dot-com>

Thanks for all the help everyone has given me so far.
T'Cs seam to be a constant challenge, but interesting.

Tried a bigger top load, the garage florescent light was pretty bright so it
was deffently transmitting power but no streamers.
So what I did was put a small toroid on the top real small 3x10, and it
quenched the spark gap with my shop vac.
Widened my relief gap a little,  And hooked 2 15KV 60ma NST's in a series.
That helped allot, was able to get 2 1/2 foot streamers.  I think I need to
make a rotary gap though.

I am thinking of trying 3 NST's in a series, but I don't know if my MMC's
will take that much juice.
Blew my power strip breaker a few times, 2 NSTs must be pulling 10-15amps,
Moving the stuff to a 30amp breaker to fix that.
How much can I push  3 parallel strings of .056uf 1600V metal Polypro, x12
each per string for a total of 19,200volts, before they blow out???

That 8.5 secondary takes allot of juice to push, If I narrow the gap in my
primary spacing would this improve the performance??
My primary only has 12 turns of 1/4 tubing at .75 between each turn.

If I would change my primary to 6 awg solid copper and make it 15 turns, at
1/4" between each turn, would this help much if at all??

Next goal is 3 to 4 feet.

Thanks again for all the help.

Brian W.


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, April 12, 2001 10:33 AM
Subject: RE: 2nd Coil FIrst Light???


> Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<Gary.Lau-at-compaq-dot-com>
>
> With an unmodified 15/60 NST and a static gap, I am able to get 60" peak
> streamers, so there is room for improvement.  Adding additional NSTs in
> parallel would help but I think there are things you can do before
> adding more power.
>
> I would suggest a larger top load than 4"x14".  I used a 6x23 plus a
> 4x15 and it still could be larger.  A newer 7x30 that I made seems
> right.
>
> What is your gap set to?  If it's too narrow it could hobble
> performance.
>
> Gary Lau
> Waltham, MA USA
>
>
>
> Original poster: "raven0075 by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> <raven0075-at-home-dot-com>
>
> Running a 15kva 60ma NST.
> Primary 13 turns 1/4" copper tube with 3/4" spacing.
> Using 10 awg wire to tap primary.
> Secondary 8.5, 22awg with 933 + turns for 23".
> Caps MMC 3 parallel strings of.056uf 1600V metal Polypro, x12 each per
> string
> for a total of 19,200volts.
> Toroid 14" diameter X 4" high.
> Using a static spark gap blown by my 3.0 horse shop vac.
>
> I was able to get 12" solid 1/4 to 1/2 thick streamer to a ground post
> once I
> tuned it.
>
> I am kinda disappointed thought it would do 2 to 3 feet.
>
> Do I need more power?? or a bigger toroid.  I should be able to get 2 to
> 3 feet
> out of the coil that size.
>
> If I put 2 15kv NST's in parallel will this make much of a difference??
>
> Or do you need a pole transformer to get this performance.
>
>
> Thanks
> Brian W.
>
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