Re: SRSG timing & other Q's

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 5/21/02 10:49:01 AM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:


>
> Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <srward16-at-hotmail-dot-com>



Steve,

IT's not normal for the safety gaps to fire with a srsg.  Cradle mounts
are excellent, but a phase shifter circuit makes the job easier.

  http://hometown.aol-dot-com/futuret/page3.html

I assume you've tested
the motor for sync operation with the rotary disc rotor attached?
If not, the extra weight and air resistance may be preventing it
from synch-ing.  I'd recommend installing a secondary so you
can see how long the sparks are.  That's a good way to know
if the rotary is phased correctly.  Without a secondary in place,
you won't have a clue what's happening.  How are you attempting
to know when the gap is phased correctly?  THere are two phase positions
that can work correctly, but one is better than teh other in
certain ways.  I posted some long posts about all this about
a month or two ago.  You may ruin the NST doing the kinds of
tests your doing, esp without a safety gap.  Running without
a secondary is not that great for the NST's either, due to
the long ring down times you'll encounter... lot's of RF... 

Cheers,
John


>
> Hi all,
> Ive been working on a SRSG for my 1440w dual 12/60 powered tesla coil.  Ive 
> been having all sorts of problems with alignment of the electrodes at the 
> voltage peaks.  Whenever i simply run the gap motionless, it works fine and 
> does not fire the safety gap.  When i get it spinning, it rarely (few times 
> a sec) fires the rotary gap and always in the safety gap.  Im simply running 
> the coil without a seconday(with a primary and caps only).  I think that i 
> may have solved my problem with a handbuilt cradle type mount.  Are cradle 
> mounts a good way to get a SRSG up and running??  Ive tried, loosening and 
> re-adjusting the disc, about 100 times, and never really get it to work 
> correctly.  I am pretty sure that the motor runs sync, it passed the 
> florescent light test.  But one question that i have is, is it dangerous to 
> run my sync gap if im not totally sure that the alignment is correct.  I 
> want to be sure that i am not going to fry my $80 worth of transformers from 
> testing it.  For example, is the situation that i described above, with out 
> the safety gap, gonna ruin my transformers?  I kept the safety gap just to 
> be sure, but is it normal for the safety to fire, if my dwell time(electrode 
> alignment) is off.  Any other tips that anyone has for the poor 
> scientist(lol) about these types of gaps.  Also, if there is any good sites 
> that i may not know about that cover this, please send them to me.  Any help 
> is appreciated.
>
> Steve Ward.
>
>