Re: MOT-powered coil questions

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

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi,

I built one once.  The disk was just plastic and the arc sliced its vanes 
right off.  The arc is like 10000 degrees and is actually hot enough to 
burn through any known substance...  I think carbon has the highest melting 
point but it is no match for a high powered electrical arc.

Another problem is that the quench would have to occur in say +-50 
millionths of a second.  For a 3600 RPM motor, that is only 1.08 degrees of 
revolution in that time.  So the disk actually turns far too slow to affect 
quenching.

It was in "interesting" gap but it never was of much use.

Cheers,

         Terry

At 10:30 AM 5/29/2003 -0400, you wrote:
>Has anyone out there tried to build a rotary spark gap using a rotating
>insulating disc to Quench the gap?