Re: First light

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

You didn't mention your spark gap. Your symptoms sound
exactly like spark gap overheating or fouling. What
kind of spark gap are you using?

Best Regards'

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <rblaisdell-at-juno-dot-com>
> 
> Hey, 
> I have seen my first light within the last week.  We
> started to work on
> the coil about a month ago.
> Have a homebuilt capacitor that seems to be holding
> up pretty good.  I am
> running a 15kv 30ma nst for the time being, but have
> to more 15kv 30ma
> nsts and two 9kv 30ma nsts.  
> Right now we are getting 20-24" streamers.  
> 
> the specs:
> 1-15kv-30ma nst
> 2 safety gaps(1 from each output) to rf ground
> firing every 5sec or more
> 1 homeade approx ( have not measured it) .005
> microfarad capacitor
> 120mils of polystyrene for  
>                   dielectric 10" x 10" aluminum
> plates overlapping area
> 9"x10" 15 plates. 
> 1/4" copper tubing  primary flat archimedes spiral 
> tapped at 12 turns
> 4.25" secondary with approx 900 turns of 22ga
> enameled wire 25.5" long
> grounded to one  1/2" copper tube driven 12" in to
> ground
> aluminum duct toroid 4" tube 12" outer 8"inner
> 
> My questions are
> Can I expect to get longer streamers with the three
> 15kvs hooked up in
> parallel without changing my tank cap?  I could
> fairly easily add some
> plates to my cap once I get some more polystyrene.
> 
> After running the coil last night for about an hour
> off and on every few
> minutes to  photograph , it got real weak and would
> only jump out big
> from the toroid when first plugged in, then only 3"
> sparks would come out
> all around the torroid.  Today it was running ok
> again.  I am thinking
> that the capacitor has warmed up and capacitance has
> changed. I tried
> retuning it but did not help. Does anyone have clues
> as to whats going
> on?
> 
> Peace,
> Ry Blaisdell
> 
> 
> 


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