What type of spark gap do you use? If you weren't using an NST, I'd
strongly suggest going with an asynchronous rotary. That way you can time
your bangs with the time constant of the tank cap you already have, for
maximum current input from the wall. This works great for MOT and pig
systems, but NST's are a bit frail in async duty, due to the possibility of
irregular bangs, so a larger cap might be the way to go...
At any rate, whenever someone says they are under-performing I always look
at the spark gap first, cap size will help with bad quenching, but a better
cap design with some air cooling is always a cheaper first step, and
necessary for a resized cap anyway.
Just my two cents...
Scott Bogard.
On Wed, Jul 27, 2016 at 12:46 PM, undisclosed recipient via Tesla <
tesla@xxxxxxxxxx> wrote:
> 12kV. 90 mA. Tuned to 187 kHz with 29 nF primary cap and 200 uF PFC cap.
> The toroid is 20.5" sitting on top of 1182 turns of 26 ga on a 4" ABS core.
> Per javatc, I should be pulling 48" arcs, but I can only manage around 28
> - 30".
>
> I was told I need more capacitance... However they did not explain their
> view.
> I currently have 17 0.5 uF 2100 vac caps in series.
> I can only think they mean I need to double the string to 34 caps and then
> make a twin string and connect in parallel, for a total of 128 caps total.
>
> Any input is appreciated.
>
> Sent from my iPad
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