Re: Another 942 run

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

Original poster: "John Richardson" <jprich-at-up-dot-net> 

Hi John,

I am running a Terry Blake propellar style gap, and with this design, i.e.
tungsten rod running thru a 1 by 1 by 3 piece of HDPE, it's hard to keep the
tolerances that one might expect with a lathe trued G-10 rotor gap.  I plan
to redo the rotating assembly in the near future with UHMWP, but for now,
it's a "run whatcha brung" kind of a set up.  Terry has seen the pictures of
my assembly, and I would post pics if I had a digital camera.  With this
style gap, it's hard to maintain perfect concentricity and down to the mil
per side kind of tolerances.  The safety gaps would fire when I was going to
extremes on the phase, but in the sweet spot, everything seemed OK.  I was
just playing with the phase to get a feel for the system, as your control
system and RSGs are new to me.

John Richardson
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, March 09, 2004 7:22 PM
Subject: Re: Another 942 run


 > Original poster: FutureT-at-aol-dot-com
 >
 > In a message dated 3/8/04 11:02:46 PM Eastern Standard Time,
 > tesla-at-pupman-dot-com writes:
 >
 > >.  I think that I will set the
 > >RSG a little tighter than the NST gap, because if the RSG gap doesn't
fire,
 > >the NST gap will, popping the 20 amp breaker!
 >
 >
 > John,
 >
 > I'm not sure what you're saying.  The RSG gap electrodes should
 > run quite close at about 0.10" spacing or less usually.  This spacing
 > should be much closer than the safety gap spacing.   A too-wide
 > spacing can make the coil run unsteady.  Of course they can't be
 > set so tight that the electrodes strike each other and break.  But you
 > can try various spacings and see if it gets steadier at a closer
 > spacings.  Some coils can tolerate a somewhat wide RSG gap
 > spacing, but many cannot.  Wide spacings may also cause
 > the safety gaps to fire.  Safety gaps should never fire when
 > using an SRSG when it's running correctly.
 >
 > John
 >
 >