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,

While the entire rotor is metal and long, numerous people have checked the
rod after a run and found that it was cool near the center.  The heat did
not travel that far down the length.  But I will check this out in more
detail.

Not sure what you mean by point #2. Every RSG I have seen is set up so that
as the electrodes expand, they will tend to close the gap.  Can you give a
photo example of what you mean?

One thing I now notice about this design.  It is not sensitive to play in
the motor bearings.  So a worn or lose bearing will not cause unwanted
contact.

Terry Blake
Coiling in Chicago



----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, November 23, 2002 12:52 PM
Subject: Re: ASRG


 > 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
 >  >  >
 >  >  >
 >  >  >
 >  >
 >  >
 >  >
 >
 >