Re: Spark gap Rapid Wear

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

Original poster: "tesla by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla-at-paradise-dot-net.nz>

Team
Fire up SRSG first time today, Went OK BUT rate of electrode wear is very
surprising, looking for confirmation its usual or is something a littlle
underrtted
SPEC
* Stationery 5mm Tungsten Rod, Clamped in Aluminium heatsink
* Rotating electrodes connected on disk with SS ring
* 200mm dia 6mm glass reinforeced fibreglass
* Rotating electrodes 6mm SS Dome nuts (two off)
* Power level was about 1.8kW (9kvc rms from 4 MOTS)
* MMC of 90nF

Ran for 2min total at low power and Tesla ran fine BUT sparkes of hot metal
(like a grinder) fly off the rotary. (Is this normal ??)

SS Rotating electrodes very pitted and about 0.5mm of material removed
Phase of SRSG is tested by stroboscope to be correct (That is on the bench
checking gap closes when mains is at pk volts, possible phase shifts due
inductive ballasting and capacitive loading of Tesla not verified however)
Tnx
Ted Linney in NZ