Re: ASRG

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

Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-paradise-dot-net.nz>

Hi Terry et al

Terry your design is significantly more prone to this because of two reasons
1) The entire rotor is metal and its quite long
2) The direction of expansion is such as to close the gap up as distnct from
axial electrode systems

Burt for my money still the best ASRG design around

Best
Ted L
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, November 23, 2002 5:58 PM
Subject: Re: ASRG


 > Original poster: "Terry Blake by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<tb3-at-att-dot-net>
 >
 > Hmm,
 >
 > Any type of rotary gap has a length of electrode in the rotor passing
 > between two stationary electrodes.  When heated, the rotor electrodes
expand
 > and the stationary electrodes expand, reducing the space available when
all
 > was cold.
 >
 > It would seem that a too-tight fit for any type of rotatary spark gap can
 > result in problems.
 >
 > Can someone explain why my design would require more tolerance than other
 > designs?
 >
 > Anybody else had a problem?
 >
 > Terry Blake
 > Coiling in Chicago
 >
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Friday, November 22, 2002 4:32 PM
 > Subject: Re: ASRG
 >
 >
 >  > Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>"
 > <tesla-at-paradise-dot-net.nz>
 >  >
 >  > Hi Claude
 >  > A word of warning with close spaced gaps. If you are using the Terry
Blake
 >  > type of arrangement
 >  > http://www.tb3-dot-com/tesla/sparkgaps/arsg_8/arsg_8.html
 >  >
 >  > Watch out for rotor expansion as the rod heats up. I've learned the
hard
 > way
 >  > that this is an issue.
 >  >
 >  > In limited experiments I have to say I've not seen much (any noticable)
 >  > imapct between very close (ie 0.1mm) and 1mm clearances in my ASRG
based
 >  > onTerry's low inertia rotor. The only point I noted was the onset of
 > firing
 >  > was higher on the variac as you would expect
 >  >
 >  > Will perhaps experiment a little taking more care  and only changing
the
 > gap
 >  > parameter.
 >  > Best
 >  > Ted L in NZ
 >  >
 >  >
 >  >
 >
 >
 >