Re: THOR Bang energy vs. streamer length measured

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


We intend to run a DC motor with external pillow block mounted RSG on our
Big Bruiser.  We could explore this idea at our Teslathon on Sept. 4th.
Hope you can all make it.

Perhaps some of the solid state guys attending could bring a simple
fiberoptical probe of some sort to accurately measure our RSG RPMs
especially at slower speeds.  We could drill a balancing hole in our rotor
for the light beam to go through --- we will have at least 1-2 holes anyway
to bring it into balance.  Our DC motor runs at 0-2,000 RPM and our RSG is
set to provide 0-612 pps (612 max at 2,000 RPMs).  We would also need a
circuit to count the single pulse/rev and convert it into RPMs.  I would
envision an 80 ft. long optical cable to remotely do this sensing.

If there are new members to the list, please email off-list if you would be
interested in doing some TC design work at the Teslathon.  I was thinking of
a quick 30-40 minute presentation I could do for some of the new members
especially those gathering parts and getting ready to build.

Also, if these new members have their sec coilforms sealed and are ready to
wind, we could wind up a few coils for these guys.  We can wind 26-30 AWG
wire in a 4.5:1 ratio on a 3-6 inch dia. coilform in less than 15 minutes.
We also stock a variety of endplates to fit various dia. secondaries.  We
could also put on a coat of Dolph's AC-43 which only requires 15 min to dry
hard enought to remove it from the lathe.  At least this would get you
started.  Again, contact me off-list if interested.

Dr. Resonance

 >
 >  > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >  >
 >  >
 >  > I respectfully disagree with this conclusion.
 >  >
 >  > Pulses/sec DO affect spark length.  A typical med size TC has a 4-5 ft
 >  > long spark even though the actual output potential is only 140-160 kV
 >  > range.
 >
 > What he's saying is that the growth/power dependence behaviour
 > deviates *above* some particular breakrate, in this case about 300BPS.
 > Questions that follow are:
 >
 > - does this dependency hold for all coils and coil configurations?
 > - does this dependency hold for all energies for all coils?
 >
 > Based on recounted experiences from the past it most likely doesn't
 > and the breakrate figure might well be different for different coils
 > and terminal capacitances, terminal ROCs and so on. Dependencies of
 > this nature have been a research bugbear in coiling ever since it
 > began. It really is time to get it sorted in my opinion but takes
 > dedication, time money and a single-minded commitment, difficult for
 > most if not everyone to come by.
 >
 > Malcolm
 >
 >  > As the pulses/sec increase the residual ions in the air help cause the
 >  > spark to lengthen.  I've seen this by shooting photographs of a coil
 >  > with a 10 ft. long spark with a high speed camera.  You can see the
 >  > "spark growing" phenomonea.
 >  >
 >  > If you are saying a spark length is independent of pulse rate, trying
 >  > running a single shot using an ignitron.  There is no way a single
 >  > shot TC is going to develop the same spark length as a coil running at
 >  > 480 pps.
 >  >
 >  > We run our model M-150 at 480 pps to deliver a 8-9 ft long spark at
 >  > 8.5 kVA average input power.  When we run it in single shot mode to
 >  > measure potential the spark output is a mere 24-28 inches.
 >  >
 >  > Dr. Resonance
 >  >
 >  > Resonance Research Corporation
 >  > E11870 Shadylane Rd.
 >  > Baraboo   WI   53913
 >  >
 >  >
 >  >
 >  >  > The BPS won't affect sparks length. For real! You will achieve much
 >  >  more > often a certain distance with a higher BPS (see my 10.7J case)
 >  >  and will > reach a top hit% dependent on your bang energy but that's
 >  >  it.
 >  >
 >  >
 >  >
 >
 >
 >