Re: Large MOT vs. Small MOT

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Dan Williams <coilerdude@xxxxxxxxx>

Thanks David,

While I will definately build a Staccato circuit soon, for right now 
I don't have the money or the time.

I am mostly trying different tuning parameters to find the "sweet spots".
Allot of my time has been spent making small improvements to the coil 
lately and not tuning.

If I can get close to Brett's 813 results I will be happy.  I know I 
can get better from this tube because I have seen it produce 
significantly more output in Brett Millers VTTC.

Our coils are very similar electrically but couldn't be much more 
different cosmetically.

I am mostly looking for suggestions on how I might improve the coil 
at this point.

Thanks again.

Dan

Tesla list <tesla@xxxxxxxxxx> wrote:
Original poster: "David Rieben"

Hi Dan,

I assume that you're running your coil in "continuous"
and not in "stacatto"? In continous mode, 12 to 14"
really ain't that bad for your setup. If you install a
stacatto circuit driver, you can run it at a much lower
duty cycle and therefore, run it at a much higher peak
power level without destroying your tube and thus, get
longer sparks in a "strobe light" effect.
Cameron Prince built my stacatto driver for me and
once I got the other wrinkles ironed out, I was able
get near 36" strobe-like sparks from my single 833A
driven coil. Cameron and I built our VTTCs roughly
from Steve Ward's 833A VTTC design and have both
obtained ~ 36" arcs with our coils in this manner.

David


----- Original Message -----
From: "Tesla list"
To:
Sent: Wednesday, March 07, 2007 9:50 PM
Subject: Large MOT vs. Small MOT


> Original poster: Dan Williams
>
> I am in the process of buttoning up my 813 VTTC (can be seen at
> www.coilerdude.20m.com). Tonight I tried a larger unshunted MOT in
> place of the small shunted one I was using.
>
> NO Difference Whatsoever.
>
> Spark length stayed the same, intensity stayed the same.
>
> This dosn't make allot of sense to me.
> Someone shed some light? Maybe suggest what else I might try to
> increase spark length past my current threshold of 12-14"?
>
> Have added a few more taps and tried tuning, max seems to be 12-14"
> at this point. I know for a fact that this tube is capable of much more.
>
>
> Dan
>
>
> Now that's room service!
>
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