[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: SRSG disk material



Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Tesla729-at-cs-dot-com>

In a message dated 1/13/01 7:42:45 PM Pacific Standard Time, tesla-at-pupman-dot-com 
writes:

<< I've read the disk for a SRSG should be made of lexan or C-10 (don't
 even know what C-10 is).  Where can I get lexan, and how do I cut it? 
 What about the heavy white plastic cutting boards are made of? 
 (polyethylene?)  Is there anything that will work that is readily
 available? 
 
    Thanks,
    Bill Vanyo
  >>

Hi Bill,
I believe you are referring to "G-10" and it is a fiberglass composite
epoxy compund, I believe. It is the best material for rotory disc ma-
terial, but on the down side, it is quite expensive and very hard to 
machine without carbide or diamond tipped blades or drills. Lexan
more reasonbly priced and quite tough and yet, easy to machine.
On the down side, Lexan becomes soft at a relatively low temp. and
could allow your rotory electrodes to become high speed projectiles
if you operate at too high of a power. However, speaking from person-
al experience, I have had excellent results using Lexan as a rotory 
disc in my 10 kVA pole pig driven Tesla system and I haven't had any
troubles with the rotory electrodes overheating, even at near max power.
 I think that the electrodes whirling at > 3000 RPMs in my system are
going to stay cool enough from the natural air flow, but I did have to pro-
perly heat sink my stationary electrodes to keep them from melting the
Lexan support pillars. Hope this helps you out. 

David Rieben

PS -- My rotory discs (I have two identical ones on each end shaft of the 
motor) are 3/8" thk X 10" dia. and have 6 euadistantly spaced 3/8" X 2"
long standard threaded brass plugs for the electrodes on 9" centers.