Re: PIRANHA - New Top Load Configuration

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Terry,

It's looking good! Tonight on the way back from dinner, I drove by a 
house that had ball lights on a pillar in their yard. It reminded me 
of your topload stack. There were 4 ball lights configured as your 
topload and about the same size. What was different is that there was 
a ball in the center of the 4 outer balls.

Looking at the picture you showed where the corona is streaming off 
the secondary is probably a good indication that a center disc laid 
on top of the rods and about the inner diameter of the balls would 
help eliminate that corona.

Great job with it all, it looks really nice. Glad to hear your going 
to coat that secondary (the wrap just doesn't do it).

Take care,
Bart

Tesla list wrote:

> Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi All,
>
> My PIRANHA SISG coil with the sphere top terminal is getting about 
> done.  I just need to work some on the wiring and tuning still.
>
> The whole coil is looking like this:
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-Const-001.JPG
>
> Pretty close to the concept :-)
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-2-Concept.jpg
>
> The secondary will eventually be coated with Envirotex. and the top 
> of the base will have a thin cosmetic cover so the primary and guts are hidden.
>
> The top terminal seems to work very well!
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-Const-002.JPG
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BallTest-1.JPG
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BallTest-2.JPG
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BallTest-3.JPG
>
> The last picture there is the corona off the top of the secondary 
> under the terminal at 300kV peak.  It will not breakout even at that 
> voltage ;-) Things might need a little adjustment there but nothing bad.
>
> The dragons are cute and the primary deck worked out well:
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-Const-003.JPG
>
> The primary coil is actually under the sheet of acrylic and held by 
> four brackets glued on with 'Weld-On' acrylic cement.  The coil is 
> just insulated #4 wire:
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-Const-004.JPG
>
> The turn to turn voltage is not super high so the coil will be just 
> wound tight in the brackets.
>
> I just transferred the SISG guts to a new base board the fits the new case:
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-Const-005.JPG
>
> http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-Const-006.JPG
>
> So it really is coming together now ;-))
>
> Cheers,
>
>         Terry
>
>
>
>
>
> > Hi All,
> >
> > I got a lot of real parts in now.
> >
> > For the top load, everything is in but I need to oversize the 
> > existing holes and mount the slide shafts into the spheres:
> >
> > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BigSpheres.JPG
> >
> > The dragons also arrived today.  Four for the corners, and one up top ;-)
> >
> > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/Dragons.JPG
> >
> > Also got the box gluing up:
> >
> > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BoxGlue.JPG
> >
> > So it really will turn out pretty close to the concept:
> >
> > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/PIRANHA-2-Concept.jpg
> >
> > There is also a new "official release" of ScanTesla 8.10 at:
> >
> > http://drsstc.com/~scantesla/scantesla810.zip
> >
> > Very busy....
> >
> > Cheers,
> >
> >         Terry
> >
> >
> > At 09:21 PM 10/15/2006, Vardan wrote:
> >
> > > Hi All,
> > >
> > > I have decided to try a new topload configuration for my new 
> > > PIRANHA coil.  It will use four 8 inch diameter "gazing balls" like this:
> > >
> > > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/newcoil-03.jpg
> > >
> > > 3/8 Brass tubing will interconnect the balls and provide support.
> > > The main tubes on the "X" will be 3/8 inch and the balls will have 
> > > 3/8 inch ID tubing inserted into them.  Thus, the balls will ba 
> > > able to slide in and out in a telescoping fashion.  The far end of 
> > > the tube inside the ball will be epoxied in place.  It is fairly 
> > > critical to get the tube aligned properly.  One could tune the 
> > > coil by sliding the balls in and out.
> > >
> > > The electrostatic fields look like this:
> > >
> > > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/newcoil-00.jpg
> > >
> > > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/newcoil-01.jpg
> > >
> > > The 4 inch radius spheres should arc out at 3MV/m or 305kV which 
> > > is fine.  So It should do about as well as a 24 (or more) x 8 toroid!!
> > > The cost is about $100 for the balls and $10 for the brass.  You 
> > > just enlarge the probably existing hole in the balls to 13/32 inch 
> > > for the tubes and pour a bit of epoxy inside the balls at the 
> > > opposite end to hold the sliding tubes.  The center of the "X" 
> > > will also be a large brass ball.
> > >
> > > The whole coil will look something like this:
> > >
> > > http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/newcoil-02.jpg
> > >
> > > I will probably use four little gothic pewter figures like these 
> > > for the four strike points down on the base rather than the brass 
> > > balls (I'll use them for feet.):
> > >
> > > http://www.pewtermanor.com/undragon.htm
> > >
> > > They can be drilled and taped for 1/4-20 and used as top cover 
> > > hold down bolts too.  The primary coil will probably be hidden 
> > > under the top cover.
> > >
> > > Should be cool!!
> > >
> > > Cheers,
> > >
> > >         Terry