RE: [TCML] Rotary Disc Material

["Jim Mora" <wavetuner@xxxxxxxxx>]

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of David Rieben
Sent: Thursday, April 23, 2009 5:47 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Rotary Disc Material

Hi Herr, all,

I was having a problem with even my G-10 rotary
disc "blistering" up a bit arouund the flying tungsten
electrodes of my ARSG. My flying electrodes are
each a 2" long x 3/8" dia. tungsten slug, and the
rotary disc is 1/2" thick. I was able to rectify the
problem by obtaining 16 of those 3/8" shaft collars
and placing one on each end of each flying tungsten
electrode, up flush with the surface of the rotary
disc to give a bit more thermal mass and a larger
heat conductive footprint on the surface of the
rotary disc. I also changed my ballast to be slight-
ly more restrictive of current flow as my original
ballast was allowing >100 amps of current with
240 to 280 volts input. Now, the amperage draw
is kept to a more sain 80 amps. ;^)

David Rieben


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