Re: ASRG

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

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
 >
 >
 >