Re: 78 inch strike from MOT coil!

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

Hi Jason,

Great work!  If others can duplicate your results, it
might be possible to do away with voltage doublers,
stacked MOTs, and similar awkward schemes. Can you
provide more details on the coil itself?  What size is
the tank cap?  How many primary turns, etc?

Regards,

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Jason Johnson by way of Terry
> Fritz <twftesla-at-qwest-dot-net>"
> <hvjjohnson13-at-hotmail-dot-com>
> 
> I believe that I have just set a new spark length
> and efficiency record for MOT
> coils! I got three 74" strikes in a single run from
> my MOTcoil, and one
> confirmed (we had three people see it and measured
> it 4 times because I almost
> couldn't believe my eyes) 78" strike! The coil is
> running with a new 460 bps
> async rotary gap (geeks see my other posts on
> tungsten carbide rotary spark
> gap, on the geek list) that I built with 1/2"
> tungsten carbide squares, on a 6"
> Al rotor, and two 1/4" brass threaded rods for
> stationaries. I just completed
> the gap the other day and fired it up for the first
> time on the coil 3 hours
> ago.  This is even more amazing when you consider
> that I'm running on a 120
> volt 15 amp breaker, and haven't tripped it once
> since I added the new gap,
> this is also with a 20 amp fast blow fuse in there,
> so I wasn't overloading the
> breaker much, if at all, and I'm cranking the variac
> all the way up and running
> for minutes at a time. I'm running 2 MOTs in series
> for about 4800 volts with
> no voltage doubler, protection filter or even a
> safety gap! This gap makes my
> MOT coil ROCK! The strikes were all to a ground rod,
> sparks were all seen by
> me, my dad, and my friend, and measured from the tip
> of the breakout point to
> the ground rod, straight line distance. None of
> these measurments uses
> estimated lengths from curvy sparks etc, just point
> to point measures. 
>  
> Jason Johnson
> G-1 #1129
> 
> 
> 


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