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