Re: Oil immersion for 4 MOT stack

["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>

Ed's point is well taken... transfomer oil is very low viscosity.. Diala AX
is noticeably "thinner" than, say, USP medium white mineral oil.

I'll bet they heat the oil up when doing vacuum impregnation.. The viscosity
of  like castor oil changes a LOT with temperature, so heating it up to
40-50C wouldn't adversely affect the poly dielectric, etc., but would
probably make it a lot easier to get the gas out, and would help dry it, as
well.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, June 21, 2003 9:44 AM
Subject: Re: Oil immersion for 4 MOT stack


 > Original poster: "Ed Phillips by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: "Peter Terren by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <pterren-at-iinet-dot-net.au>
 >  >
 >  > Hi Chris
 >  > I use 4 MOT's under transformer oil in a rectangular storage container
with
 >  > a lip on the inside on which the cover rests so splashes go back into
the
 >  > container. Mineral oil is apparently OK but don't use motor oil. I
ruined a
 >  > capacitor using this. Transformer oil is best but costs more. see
 >  > http://members.iinet-dot-net.au/~pterren/tesla_coil_latest.htm for details.
 >  > Cheers
 >  > Peter (Tesla Downunder)
 >
 > I suspect that any DRY oil should be OK.  However, all of the
 > transformer oil I've seen has an additional desireable property - low
 > viscosity  which makes it easier to get all of the bubbles out.  I
 > suspect Kerosene might even work, again if it's dry.  The oil in the
 > oil-filled filter capacitors I have have is different, with much higher
 > viscosity.  About like castor oil and may actually be that in some of
 > them.  It would be a horrid job to pump all of the air out of something
 > impregnated with that stuff.
 >
 > Ed
 >
 >