Re: Geek Group Cap mod

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rblaisdell-at-juno-dot-com>

 
On Mon, 06 May 2002 16:49:22 -0600 "Tesla list"
<<mailto:tesla-at-pupman-dot-com>tesla-at-pupman-dot-com> writes:
> Original poster: "Jim Lux by way of Terry Fritz
<<mailto:twftesla-at-qwest-dot-net>twftesla-at-qwest-dot-net>" 
> <<mailto:jimlux-at-earthlink-dot-net>jimlux-at-earthlink-dot-net>
> 
> 
> 
> > >However the creapage path seems to be the weak link. On you 
> average
> > >longneck
> > >(assuming salt or brine to the level of the beginning of the 
> neck) there is
> > >about 3" of creapage path.
> > 
> > About 6 on a Longneck (3 Up and 3 Down)
> 
> And how do you get the inner conductor in there without having a 
> shorter
> than 3" path?   I suspect that it would be more like a 3" creep path 
> on the
> outside, then a 1/4" (or less) path to the inner conductor.  And, if 
> it
> were a precision fabricated one like Terry used in his test, the 
> ions
> spraying off the corners and edges will definitely cause problems. 
> Oil will
> help..
snip
 
You could use insulated wire for the inner conducture...stripping off the
insulation only 
below where the salt water meets the oil...this would give you back the 3 lost
inches of creep path.  Having a cork to hold the wire in the center will
help...make sure the cork has a small vent hole.....  about this size
.
 
I suppose there is 40kv insulated wire...though I've only used neon wire off of
15kv trannys...I dont know its voltage holdoff rating.
 
Ry Blaisdell
 
 
 
> When you get your xray power supplies unpacked and get some 
> measuring
> equipment, you might be able to make some very nice quantitative
> measurements. I'm sure that you can find volunteers to provide 
> sample empty
> bottles to work with.  You might want to see if the "type of center
> conductor" makes any difference...  The other thing that might make 
> a big
> difference is how the foil is arranged... sharp edges=EVIL for 
> HV...
> 
> 
> 
> > 
> >   The value I found for glass in air is
> > >12.5kV/inch.  So 37.5kV.  Accounting for a thin skim of oil on 
> the surface
> > >of the brine I rounded up to 40kV.
> > 
> > Cool.
> > 
> > I'll have the site changed by week's end, thank you for the 
> ocrrection Dave
> > :)
> > 
> > >
> > >Dave
> > 
> > Christopher "Duck" Boden Geek#1
> > President / C.E.O. / Alpha Geek
> > The Geek Group
> > <http://www.thegeekgroup-dot-org/>www.thegeekgroup-dot-org
> > Because the Geek shall inherit the Earth!
> 
>