Re: [TCML] Re Electrode diameter

["Kevin Eldredge" <oklahomacoiler@xxxxxxxxx>]

  Phillip

  My opinion would be 1/2" dia, as I am running the same size disk and
electrode distance of 11" with 0.173 uF @ 33kW, 14.4 kV.  It is a sync
rotary at 3600 RPM, and runs fine.  I believe 1/4" electrodes would run too
hot, and with thermal cycling from running hot then cooling off might loosen
the fit in the disk & setscrew, BAD.  As for distance I believe as close as
you can and feel comfortable about the runout & accuracy of the machining.

Kevin

:

> Hi All,
> I'm building a 12" diam. secondary SRSG coil running at 10Kv, 7KVa,
> 50Hz and 100bps. Motor speed is 3000rpm, rotor 12" diam G10, two
> flying electrodes at 11" diameter and tank capacitance 0.15uF.,
> I have a selection of Tungsten electrodes, both 1/4" and 1/2" diam
> and have a choice of either two or four fixed gaps in heavy brass. Is
> 1/4" diam adequate to contain the heat
> or is 1/2" better perhaps to aid regular firing albeit increasing the
> dwell. Should the electrode gaps be minimal ( without risk of contact
> of course) or is there  an optimum distance,
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla