Another 3k turn coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jason Johnson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <hvjjohnson13-at-hotmail-dot-com>

Well I finshed this and fired a week or so ago, but hadn't got around to
posting. I built a few secondary coils to replace the one I lost on the
fourth of July for my MOT coil. I have actually only finished one so far
because the 8" got re thought mid way through building it when I got
hold of a nice piece of 8" PVC. The other coil that I have already
finished and ran is a 4" coil wound with 33 gauge for 24.5" for about
3200 turns. For the record it performs beautifully and has no problem
with 5 foot + streamers. I can't say however if its more efficient than
my old secondary with ~1700 turns because A) I removed some caps from my
MMC bank to make it 198nf instead of 110nf, and B) I can only tune with
the small toroid because I don't have enough primay to put on the big
one. It REALLY wants some more topload, there are multiple streamers,
and the behavior of the sparks isn't what it should be with the right
amount of topload.

On another note, I need to find another stationary electrode material
for my rotary. Theres now 6.5 joules in my MMC at max variac setting,
and there is less than 6 inches of 6 gauge welding cable from the high
current connection on the caps to the left stationary electrode, and it
is eating 1/4" brass like candy. Probably 1/4" per 10 minutes runtime.
The tungsten points I put in the stationaries didn't stand a chance it
ate them even faster. Also my MMC has almost half the caps it did before
and is pushing up to 180% more power and is only barely perceptably warm
after several minutes runtime.


<< Jason R. Johnson >>
G-3 #1129
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