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Re: A few Q's from a beginner



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

Brad: the costruction of the primary is a trade-off. The best form is a 45o
cone slightly above the base of the secondary. This is hard to construct and
mount. A flat primary has the least coupeling problems and is easy to
construct, but has the least efficency. A solinoid primary has the best
coupeling and power transfer, but the most arc over and running arc
problems. It is the easiest to construct and most trouble. Tube TC coils use
the solinoid coil primary because they nead the best coupeling to oscilate.
    I make flat plate capacitors as quickly as an array of small capacitors.
I use 4 mill flat bag stock 6" wide and 12" wide with 10" aluminum flashing
metal. I have a paper cutter a hole punch for paper, a heat sealer, and a
pop rivet tool. A 10' length role of flashing makes 19  6x10 plates and 5+
1"x10" straps for connecting. one strap is always less than 1". I make 20
6x12 double thick bags sealed 2" from the bottem. I pench the top center
1/2" from the top and "V" cut the top out to make assembly easy. I top
center punch all plates 1/2" in and cut off all corner points with scissors.
Aluminum cuts like paper. I place each plate in a bag. The 2 inch seal makes
a spacer to prevent the plats sliding down to farr.I then wrap the 12"
plastic around the sides of my first plate 5 times giving me 12x4 mill thick
insulation, and a 2" space at the botten of the plate. I place a plate/bag
on each side in the alternat direction and wrap 5 wraps arround each layer
until I use up all my plates. The last wrap I use 10 layers of double thick.
I then tie the assembly witk nylon string. I punch My straps 1/2 "center
from one end and pop rivet the strap with 1" pop rivet and 2 pop rivet
washers spacers between each plate of 5 plates providing 2 straps connected
to each end of the assembly. This provides 3.63 nF capacitance and I use 4
assemblies. I place 2 in a rectangular plastic tub fram Wallmark filled with
1.5 gal mineral oil sealed with RTV Silicon calk glued down lid, and
parallel two tanks, 4 capacitors  for a total of 14.52 nf.The rolled plastic
holds everything in place and provides insulation. The 1" straps carry
plenty of current to the spark gap, and the sealed plastic tanks control the
mess.The straps dont seal all the way so pressure can escape through the
plate spacing on the edge of each tank.I use a 1/4 plastic sheet under my
tanks to prevent any arc through punching a hole in the bottem of my plastic
tank. The silicon requires 3-4 days to harden so dont get impatient .
    I hope this long dialog serves you.
   Robert  H     P.S.  My old fingers dont hit the right key all the time
> From: "Tesla list" <tesla-at-pupman-dot-com>
> Date: Fri, 29 Mar 2002 15:44:53 -0700
> To: tesla-at-pupman-dot-com
> Subject: A few Q's from a beginner
> Resent-From: tesla-at-pupman-dot-com
> Resent-Date: Fri, 29 Mar 2002 15:53:46 -0700
> 
> Original poster: "Soul Firez by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <soul_firez-at-hotmail-dot-com>
> 
> 
> Hey everyone,
> 
> Im somewhat new at the whole tesla coiling thing well ive been studying
it off
> and on for the last 3-5 years so i have a good idea how to build it but im
> terriable at the math. Ok waht im wonderring is what is the best type of
> primary to use ive heard hellical is good as well as the flat spirial. If the
> dimentions of the secondary and the rest of the system matter any: the
> secondary is 7.5 in dia and 35" tall wound with 24guage wire im running 2 15k
> 30ma NST's in parallel and cap wise well thats my other question. Ok aside
> from
> the primary what is the simplest way to make a multi-plate cap.
> 
> 
> 
> Thanks 
> 
> Brad 
> 
> 
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