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Re: tungsten rods and run time

Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Miles & Ken,

Red hot suggest your pushing too much power through those electrodes. Either decrease the power or upgrade the electrodes. If their heating that fast, then your probably turning up the juice after it starts up to see just what the coil will do. From start up to "the juice your pleased with providing", there is probably a lot of time that goes by, all into heating up those electrodes. Upgrading to larger diameter electrodes would be a good place to start. Minimum 3/8" diameter.

I would also be curious if you have an idea of the break rate your running when this happens?

Take care,

Tesla list wrote:

Original poster: "miles waldron" <mileswaldron@xxxxxxxxxxx>

Here is a pic of my friends running coil; it is throwing 10 and 11 foot arcs
right now.


We are having the following difficulty and ask your advise. The tungsten
rods in the async rotary 6 point 4 pickup spark gap glow red hot after 25 to
30 seconds of use. Maybe less. The tungsten rods then disintegrate. This is
bad. How can we improve run time? Do we need another gap? Do we need a
different kind of gap? Do we need to quench this gap with an air compressor?

Here is a link to a close up of the spark gap:



Miles & Ken