With some tuning and a faster motor I was able to get consistent 16 inch
arcs off this build last night. This is a non-pumped negative with Latex
belt, and PVC-tape /Metal foil covered nylon bed casters.
I do make the brushes using sheet on end rolled around a plastic tube then
pins inserted and held in place via the tube. Everything from there to the
connection point is wrapped in electrical tape. Many people suggest screen
material is far superior but I find the opposite - however I have yet to
find any brash screen material to test.
Depending on you talk to its about 30KV for inch in air so that would be
480KV.
The max possible attainable voltage due to 14 inch 'sphere' size in air is
420KV.
I have considerable leakage and basically just pump it fast enough to
overcome the leakage, but I'm still confused by these results. I would
expect less than the max (420KV) ans as I have no corona ring or inlet
radius I Would expect even less.
Now only about 10% of these 'arcs' are fully visible across the collector
to discharge rod, I don't understand why it has that behavior but it is
definitely arcing you can see from the discharge point side.
Any help on this topic would be greatly appreciated!
Regards,
Matt Sweeney
On Sat, Sep 12, 2015 at 8:20 PM, Matthew Sweeney <msweeney23@xxxxxxxxx>
wrote:
> Just a brief one showing the secong of my my dual pole running (not
> pumped). This is negative and a bit more reach than the positive. 11-13
> inches max spark but its not complete, like in darkness you can see it come
> from ground then kind of turn into misty blue charge before hitting
> collector. Focus is a little off sorry. No corona rimg but i used a copper
> static shield inside.
>
> There are couple others i put up fom various old builds.
>
> https://youtu.be/3R2MVCafaVU
>
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