RE: Balancing an RSG rotor

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

Original poster: "Rothman, Aric by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Aric.Rothman-at-Honeywell-dot-com>

The disk was machined on a milling machine.  The disk and electrode holes 
were machined about a central hole.  I don't
know the method the machinist used to fix the angle between electrode holes.

The electrodes are 1 1/2" threaded brass rod, held in place with nuts, flat 
washers, and lock washers.  The vibration
was observed before installation of the electrodes.  I have yet to test the 
rotor with the electrodes installed.

Aric

 > -----Original Message-----
 > From: Tesla list [mailto:tesla-at-pupman-dot-com]
 > Sent: Monday, October 28, 2002 1:51 PM
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Balancing an RSG rotor
 >
 >
 > Original poster: "D.C. Cox by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>
 >
 >
 > Describe the technique you used for drilling the holes and
 > locating the
 > holes for the perpendicular electrode holders in the the rotor.
 >
 > If you didn't use a milling machine equipped with a turntable
 > accurate to
 > 1/1000th inch this is your problem.  You absolutely need to
 > have a machine
 > shop perform these operations.  Also, the electrode
 > perpendicular holders
 > must be machined to a uniform length accurate to 1 mil.
 >
 > Dr. Resonance
 >
 >
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Monday, October 28, 2002 8:08 AM
 > Subject: Balancing an RSG rotor
 >
 >
 > > Original poster: "Rothman, Aric by way of Terry Fritz
 > <twftesla-at-qwest-dot-net>" <Aric.Rothman-at-Honeywell-dot-com>
 > >
 > > I am in the process of completing a SRSG.  The 1/2 hp, 3450
 > RPM motor has
 > > had it's armature flats ground, and a G-11
 > > phenolic disk has been machined.  The disk is attached to
 > the motor shaft
 > > using a pulley as a flange, it's face having
 > > been turned on a lathe.  The disk spins true, without
 > significant runout
 > > (wobble) but significant vibration is evident
 > > nonetheless.  What are good techniques for balancing the rotor?
 > >
 > > BTW, the problem I was experiencing with my TC; where the
 > spark gap was
 > > arcing, and minimal output on the top load was
 > > present, was due to one of the phases on the NST having
 > died.  I have a
 > few
 > > backups, so its not a big problem.  I'm just
 > > glad those Maxwell caps are still sound.  Whew!
 > >
 > > Aric
 > >
 > >
 > >
 >
 >
 >