Re: Tuning Troubles

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

Original poster: "Gregory Hunter by way of Terry Fritz <teslalist-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

I have a suggestion. Build a better spark gap. The
spark gap is the key component as far as coil
performance is concerned. A Gary Lau style sucker gap
will probably boost your spark length, and it is
simple & cheap to build. If you don't want to put up
with the constant howl of a vacuum cleaner motor, try
an RQ type multigap made from copper pipe couplers.
Once you have your spark gap optimized, experiment
with a larger toroid. The largest top load capable of
un-assisted breakout usually gives the longest sparks.

Cheers,

--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: "WIZZARD . by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <pbobyk-at-hotmail-dot-com>
 >
 > I get 24" sparks to a sharpened ground rod
 > horizontal to the torid.
 > I am sure that I can do better with the components I
 > am using, I am just at
 > a standstill and could use your input. Any
 > Suggestions?
 >
 > The resonant frequency of my secondary, by itself,
 > measures -at- 200 KHz with
 > a frequency generator and scope. Once I assembled
 > everything together I
 > measured the secondary with respect to the primary
 > to see if they were the
 > same, ( in tune ) and found the secondary frequency
 > shifted to 160 KHz.
 > Should I still concentrate on tuning to the
 > "uncoupled" resonant frequency
 > of 200 KHz?
 >
 > My spark gap is made of eight spark plugs in series
 > with a vaccum moving
 > air past each spark point very quickly. ( WIZZARD'z
 > Gap )
 >
 > My RF ground is 1/2" re-bar 3' into the earth.
 >
 > Here is my Data;
 >
 > Primary Transformer Output Voltage (VAC)
 > 15000.0000
 > Primary Transformer Rated Current (AMP)
 > 0.0600
 > Primary Transformer Input Frequency (HZ)
 > 60.0000
 > Primary Transformer Input Voltage (VAC)
 > 120.0000
 > Primary Coil Inside Diameter (IN)
 > 4.5000
 > Primary Coil Wire Diameter (IN)
 > 0.3100
 > Primary Coil Wire Spacing (IN)
 > 0.2500
 > Primary Coil Number of Turns
 > 14.3000
 > Primary Coil Angle From Horizontal Plane (DEGREES)
 > 15.0000
 > Secondary Wire Diameter (IN)
 > 0.0179
 > Secondary Coil Total Outside Diameter (IN)
 > 3.5400
 > Length of Secondary Wire (FT)
 > 27.1000
 > Secondary Wire Gauge
 > 25.0000
 > Secondary Turns/Inch
 > 53.0726
 > Top Load Capacitance (PF)
 > 20.4775
 > Sphere Radius/Toroid Tube Diameter (IN)
 > 4.4000
 > Toroid Diameter Tube Center-to-Center (IN)
 > 14.2500
 >
 > I'm sorry I don't have a web site to post my photos
 > :-(
 >
 >
http://hot-streamer-dot-com/temp/MAY-22-2003-First%20Sparks.jpg
 >
 >
http://hot-streamer-dot-com/temp/May-3-2003-WizzardzSparkGap.jpg
 >
 > http://hot-streamer-dot-com/temp/WizzardsTeslaCoil.jpg
 >
 > http://hot-streamer-dot-com/temp/WizzardsVARIAC.jpg
 >
 > WIZZARD
 >
 >


=====
Gregory R. Hunter

http://hot-streamer-dot-com/greg