Biggg Coil running again

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

Original poster: "Kevin R Eldredge by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kreld-at-juno-dot-com>

All

  The Bigg Coil was disassembled last Fall waiting for its new home where
it can be perminantly assembled & ready to fire at a moments notice.   At
last a Tesla Coil "hanger" was built this last several weeks measuring
10' wide x 10' deep x 16' tall with two 15' doors.  Features include an
electric hoist on the rafters to work on the Coil & a work loft at 12'
for maintainance on the toroid.  It takes 5 minutes to roll out its 24'
runway and wire up.

  Of coarse it was tested Saturday with less than favorable conditions,
like a 7 to 10 mph wind.  Still it gave respectable 22' arcs to the
hanger.   With the wind, the arcs wout start on the windward side of the
8' toroid, hit the ground, and rotate 180 degrees on the ground to the
opposite side then break up,  another arc would start and repeat again.  


  The 120 bps rotary had some arc follow around when wired in series with
the vacuum static gap using 2 gaps.  I increased it to all 5 gaps, and
output dropped to nill.   The static gap was bypassed all together, and
rotary follow around stopped, the output arcs brightened nicely.

  I am planning on installing a resistive voltage divider to take voltage
measurments accross the capacitor and transformer outputs.  This would be
tied directly to the vertical deflection plates of an old tube type
scope.  Any suggestions on this idea are welcome.  The scope has already
been modified for direct vertical inputs.

Coiling in Oklahoma

Kevin E.
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