Re: Rotor

Subject:  Re: Rotor
  Date:   Wed, 16 Apr 1997 20:19:25 -0700
  From:   "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
    To:   "Tesla List" <tesla-at-pupman-dot-com>

Hello Gary:

I can suggest a rotor that we use in commercial units that seems to work
well with medium and large size coils.

Use G-10 glass laminate (fiberglass not strong enough unless you limit
speed to 1725 or less) in a dia. of 12 inches.  Arrange 10 electrodes on
10 in. dia. circle (1 inch to edge all around).  If you are running a
level of 5 KVA or more use 1/2 brass feedthru's with screw in tungsten
electrodes.  We use brass with a length of 1.25 inches.  Easiest to use
standard 1725 RPM  1/2 or 3/4 HP motor with belt drive -- advantage is
can easily change the rotor speed to see what type dwell time works best
with your coil setup.  DC motors are also great but expensive so we
with the 1725 RPM 3/4 HP motors for most applications.

With this arrangement use a pair of fixed electrodes on each side of
with gap on both front and back of rotor.  This produces 2 gaps per side
with total of 4 gaps.  We usually set each gap at 1/8th inch spacing.  A
small piece of .060 inch mylar on each side protects the motor casing
any flashovers.

Be sure your fixed electrode supports are type LE phenolic --- don't use
plastic as it will melt if the unit is operated too long.  We use 1 1/2
inch dia. phenolic rod cut to proper height such that each electrode is
horizontal and level to the rotor.

Hope this helps you out.


>         Gary Weaver wrote:
> I would like to build a rotor that works.  Can anyone tell me the best design 
> for a rotor?  I have a lathe and milling machine to work with and I can get a 
> motor.  I have several pieces of 1/2" thick fiberglass board about 8" square 
> that I can turn round in the lathe. 
> Gary Weaver