RE: Improving my poorly designed coil

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

Original poster: "Chris the great" <downnessisgoingup-at-hotmail-dot-com> 

I am current using 23 bottles, and have not measured it.  I got 15nF 
according to a calculation for bottle caps, but I think that the actaully 
setup has more juice than that.  I will be adding a very large addition 
soon to run a larger topload (100 bottles total, including my current 23) 
at extremely high power levels.  I think I'll try putting some old 
magnetics near it and see if that helps (probably arc to the magnetics and 
blow them up, that's my kinda luck).



>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: RE: Improving my poorly designed coil
>Date: Tue, 14 Oct 2003 00:24:54 -0600
>
>Original poster: "Dwight Harm" <dwighth-at-traxsoft-dot-com>
>
>Chris,
>We haven't done as good as Greg Hunter (60" - WOW!), only 24" from 2 MOTs,
>but still working on it.  Anyway, I'd say there's a good chance your gap is
>NOT quenching most of the time.  We found that just adding a strong blower
>(exhaust from a portable vacuum cleaner) close to the gap (2-3" away)
>improved output from around 6" to 24"!
>
>What's your cap? We've got 3 bucket caps (39 bottles), measured 46nf at time
>of best sparks.
>
>Dwight.
>
> > -----Original Message-----
> > From: Tesla list [mailto:tesla-at-pupman-dot-com]
> > Sent: Monday, October 13, 2003 9:23 AM
> > To: tesla-at-pupman-dot-com
> > Subject: Improving my poorly designed coil
> >
> > Original poster: "Chris the great" <downnessisgoingup-at-hotmail-dot-com>
> >
> > Well, I got my first coil running.  It is ill designed, has a horrible
> > primary and topload, but has hooked me onto coiling for life.
> > Of course, it is only running on 2 MOTs, which is very dissapointing (I'll
> > get more soon!) running through the simple voltage doubler they use in the
> > microwaves, giving me 60 12000 volts pulses every second.  This is giving
> > me a max spark of 8 inches :(.  Also, I am getting corona forming from the
> > center of my secondary to the strike rail.
> > So, I need suggestions for improving my piece of junk.
> >
> > Capacitor- around 0.015 to 0.02uF.  I'm not sure, because I don't have a
> > capacitance meter.
> >
>...
> > Spark gap is two bolts spaced at near max distance, inside a plastic box
> > about 5 cubic inches.  This muffles the sound a bit, so you can really
>hear
> > how loud the streamers are.  No problems with this, getting good clean
> > firing and good quenching.