Re: Very strange problem, please help

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

Original poster: "brian by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ka1bbg1-at-mcttelecom-dot-com>

Hi, well i'm gonna guess this one, sounds like the cap is warming up and
coil is comming into tune,most caps tend to drift when warming up. cul brian
f.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, August 12, 2001 1:25 AM
Subject: Very strange problem, please help


> Original poster: "David Kronstein by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <david_kronstein-at-telus-dot-net>
>
> I took out my coil after not using it for a long time, and I decided to
use
> only 4 gaps out of 10 for now, so I put a CD on top, and I turn it on. I'm
> getting sparks about ten inches, but after a few seconds, the arcs start
> getting longer, and longer, and longer, until about 12 seconds later there
> about 30 inches long, so I turn it off, and go searching for something
else to
> put on, and I find a tin can, so I put that on top, and turn it on.  Again
I
> start out with 10 inch arcs, and they grow, over about 15 seconds, to
about 36
> inches long, so long they started striking the fluorescent light above,
also
> the capacitor safety gap starts firing about once a second, so I shut
down.
>
> Transformer is a 15/60 neon, cap is a 0.01uf 20 KVAC Plastic Capacitors,
> primary is tapped at 12.6 T, using quarter inch pipe spaced at 1/2 inch
centre
> to centre, secondary is 1000 T #24 wire on 4 inch PVC toroid is 4 inch TD
by
> 17"OD, spark gap is a cylinder gap, built on a 6 inch PVC pipe, electrodes
are
> 1.5 inch copper pipe couplings, spaced at 0.03(Most of the gaps are larger
than
> this, maybe ~0.04)with ten gaps, cap safety gap is made of 2 stove bolts,
heads
> facing together, with a gap of a little less then 1/2 an inch.
>
> Any idea what's causing this? Please help.
> Also, is the cap rated high enough?
>
>
>
>