Re: Terry Gap vs. TCBOR...

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

Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com> 


--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: Terry Fritz
 > <teslalist-at-twfpowerelectronics-dot-com>
 >
 > Hi Brett,
 >
 > This will be very interesting!!  I have long thought
 > that the multigaps
 > tends to burn off less power so the coils are more
 > efficient.  They also
 > quench better.  Looking forward to what your
 > experiments find!
 >
 > Cheers,
 >
 >          Terry

Great!  I'm glad to know you are interested.  The glue
was nice and cured by this afternoon, so I did some
preliminary test firings.  It wouldn't fire tapped at
20 pipes, so I had to reduce it by 4 or 5 and it fired
at an 80% variac setting or so.  Amazing performance
with what looked like 4 footers or larger leaping out
into free space.

I plan on writing a text file with detailed specs,
exact variac settings, and even VA comparisons if I
can borrow an amp clamp from one of the hams around
here.  And I still have yet to drag out the TEK and
set up an antenna.  I will certainly keep you and Luke
(and whoever else is interested) posted.  Plus I plan
on making gap measurements available as well.  Someone
remind me, if I forget that.  I'll try to find time to
make a section on my hot-streamer page documenting
this experiment.

-Brett


 >
 >
 > At 07:54 PM 2/27/2004, you wrote:
 > >Luke (and Terry might be interested too),
 > >
 > >I have started the restoration of the Fritz linear
 > >static gap.  I mixed up some T-88 aircraft grade
 > epoxy
 > >(good stuff I might add) and set up the cu pipes on
 > a
 > >nice 1/2" thick Lexan base I pilferred from my
 > >plastics crate.  Tomorrow it should be pretty well
 > >cured and I can start firing up and performing
 > tests.
 > >
 > >
 > >I'll soon be providing pictures of both the gaps as
 > >well as scope waveforms of quenching for the
 > >respective units.
 > >
 > >Just remember, the diameter of the pipes is much
 > >greater in the TCBOR gap, so heat sinking/cooling
 > will
 > >be naturally better in the TCBOR.  This is
 > definately
 > >something to consider when analysing the results.
 > >This test will definately not be controlled, nor
 > will
 > >it be double blind.  Nevertheless, I think some
 > >tentative conclusions may not be life threatening.
 > >
 > >I must also not forget to take measurements of each
 > >gap and provide total gap spacing for each gap unit
 > >tested.  I used two index cards stacked to space
 > the
 > >pipes in the Fritz gap.  Those will be easy to
 > measure
 > >with a caliper.  I can use a feeler gauge for the
 > >TCBOR.....something I should have done a long time
 > >ago.
 > >
 > >I hope a few people will take an interest in this
 > >little project.  I know Luke is interested (plus
 > me),
 > >so that makes it worth doing right there.  What
 > we're
 > >really wanting to know here is whether or not
 > >distributing a spark over many gaps for greater
 > >quenching is desirable over using few gaps to
 > minimize
 > >loss?  Where is the balance?  Is this a sensitive
 > >parameter that must be matched to specific systems?
 > >If we're lucky we might learn more about whether or
 > >not 1st notch quenching is the "holy grail" of
 > spark
 > >gap design (see Richee Burnett's page).
 > >
 > >-Brett
 >
 >