Re: Where do you buy Fiberglass discs for an RSG???

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

Original poster: "Jim Lux by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Practically speaking, something like plywood might actually work fairly well
for a rotor material, especially if you were to mount the electrodes in an
insulating bushing.  If you were to find some sort of 1/4" thick hard
plastic bushing to mount electrodes in, you'd be all set and you could use
almost any metal disk, lots of which are available with holes conveniently
drilled in the center (i.e. things like cooking pot lids, etc.).  Something
like phenolic shoulder washers?

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, June 22, 2003 6:28 PM
Subject: Re: Where do you buy Fiberglass discs for an RSG???


 > Original poster: "Mark Broker by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<mbroker-at-thegeekgroup-dot-org>
 >
 > Actually, most people who use Lexan for rotary spark gap rotors soon have
 > to replace their rotors.  Lexan melts at a very low temperature, whereas
 > the garolite composites (LE, CE, G-10, etc) that most people actually DO
 > use have considerably higher melting temperatures.  The rotor and
 > electrodes can fly apart if it melts.
 >
 > McMaster-Carr has all you can think of:
 > http://www.mcmaster-dot-com
 >
 > I have used both Grade LE Garolite and G-10, and my personal preference is
 > Grade LE.  Grade LE is a linen in an epoxy resin, machines better than
 > G-10, but doesn't have quite as high material strengths as G-10.
 >
 > Mark Broker
 > Chief Engineer, The Geek Group
 >
 > On Sun, 22 Jun 2003 16:09:43 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:
 >
 > >Original poster: "CJ Moore by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > ><xowoe-at-cox-dot-net>
 > >
 > >Most people get a peice of lexan, not fiberglas, and then use a saw to
cut
 > >it. There are a variety of methods, search the archives and you'll see a
few
 > >that seem to work.
 > >
 > >CJ
 > >
 > >----- Original Message -----
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: <tesla-at-pupman-dot-com>
 > >Sent: Saturday, June 21, 2003 6:45 PM
 > >Subject: Where do you buy Fiberglass discs for an RSG???
 > >
 > >
 > > > Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>"
 > ><JACKBINTHEBOX-at-aol-dot-com>
 > > >
 > > > I'm hoping to build an RSG, but I have no idea where I can buy a nice
 > > > fiberglass disc.
 > > >
 > > > Anyone have any idea where I might find one?  I've looked at the
hardware
 > > > store, at sanding disks etc., but nothing they have will work.  What
is
 > > > everybody out there using?
 > > >
 > > > Thanks!
 > > > Jack
 > > >
 > > >