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Re: Odd/errratic TC behavior. Why?
Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ghunter31014-at-yahoo-dot-com>
Uh Oh! Blown cap? In a jam? You can assemble .01uF
(12 pack) of beer bottle caps in a couple of hours and
be sparking again in time for your demo. Just an
I like Gary's sucker gap too. Lately, however, I've
been studying his vortex gap (sort of a reverse sucker
gap). I just might have to try one of those, as I
have a big 120V centrifugal blower sitting idle in my
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "jpeakall by way of Terry Fritz
> <twftesla-at-uswest-dot-net>" <jpeakall-at-mcn-dot-org>
> Howdy All,
> I made a vacuum gap like I saw on Gary Lau and
> Greg's (hotstreamer) site.
> Wow! Easy to make (less than 3 hr.) and works great.
> Much better output!
> Only trouble is, I was having so much fun, I blew a
> tank cap.
> Enter my problem. I have a .025 (actually tests to
> .023) RRI cap. In spite
> of the fact it is too big for my 15kv/60ma, I hooked
> it up, and trying all
> primary tap points and gap settings. I got a little,
> with it tuned to 1-2
> primary turns, but that was it. I wasn't really
> surprised, as that tranny
> shouldn't really run it anyway, but it didn't act
> like a too big tank cap
> has for me in the past (erratic SG behavior). It was
> firing fine over a
> range of SG adjustments, just no secondary output.
> When I tune the primary
> really low, I get some yellow sparks off the top of
> the tank cap.
> So I pulled out my 12kv/120ma that I have for my new
> system I am building. I
> was a little concerned, as my coil is small, and I
> thought I'd have to run
> at low power, as the .025 is close to a res cap for
> this tranny. Anyway, to
> make a long story short, same deal. I tried gaps
> from .25 to .05. Nada. What
> gives? It fires the gap great. One thing I did
> notice is that the 12kv/120ma
> needed a SMALLER setting on the safety gap. Is this
> sucker just weak? It
> does seem to have more ooomph once it jumps the gap,
> but won't jump as far.
> In spite of the lesser voltage, I expected it to
> jump further than the
> I'm gonna go take a look at info to hook my two NSTs
> together tonight and
> try it out. I have friends visiting this weekend
> that wanna see my coil!
> Thanks All,
> Jonathan Peakall
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