Re: Good News For My Finished MOT Powered Six Inch TC! But Nedd A Little Help Please!

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

Original poster: "Steven Ward" <srward16-at-hotmail-dot-com> 

Do you have a phase controller on the SRSG???  Im guessing that maybe there 
is a phase shift that occures.  Your problems seem to suggest that the SRSG 
is becoming out of phase with the supply.  Note that in my SRSG system, the 
phasing at low power and high power is like day and night.  My coil makes 
over 5' arcs at 1500w... your coil should be able to hit 10' at your 
maximum power as long as everything is working.  If that is not the 
problem, i would say get rid of the capacitive ballast or make it larger to 
allow more power.  But really, with an inductive ballast, you should not 
need both, right?

Steve Ward


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Good News For My Finished MOT Powered Six Inch TC! But Nedd A
>Little Help Please!
>Date: Sat, 13 Sep 2003 10:34:12 -0600
>
>Original poster: "tmoorezz" <tmoorezz-at-adelphia-dot-net>
>
>Hello List,
>
>     I have just got done running outside my new Six inch TC with a SRSG and
>obtained 4 foot sparks, running only at 1800 watts and being quiete hummid
>85% and about 70F out, that isnt too shabby. the coil preformed well but not
>as well as I might have hoped, although I had no racing sparks or other
>little gremlins, i really want those 10 footers. If i wanted 3-4 foot sparks
>i wounldn't have bothered to finish my six incer and stuck with my 3in tc.
>The power input wouldn't rise above 2400watts and then spark length wasn't
>that great less than 3 feet -at- 2400watts. I had the coil set up by 8:30pm and
>finished around 10:30pm. I hooked up my SRSG, 4 pac of mots, the tc and my
>psu which houses a giant 45 amp variac that's way too heavy. The psu by its
>self ways about 100lbs.
>
>My setup consists of the following parts
>
>Primary:
>ID=11.5"
>OD=22.5"
>3/8" CU tubing spaced .5" for a total of 8 turns
>
>Secondary:
>OD=6.65"
>Wound=32" with 21 awg enameled wire
>
>Topload:
>Two toroids
>.25" above top windings a 19" x 6.5" toroid
>and an inch above that is a
>30" x 6.5" toroid
>
>Tank Cap:
>90nF -at- 35kv max
>
>SRSG:
>3600 rpm motor
>6.75 od disk
>8 electrodes
>480 BPS max
>
>HV PSU:
>4 Pac mots HV capacitance balasted .43uf per side should limmit to 7500watts
>max
>and low side a variable inductor hv short circuit with out caps is 1500
>watts minand  4000 watts max
>
>Well any way I encountered some weird things happening. I started off at 240
>bps with HV capacitance ballasting and low voltage inductive ballasting, the
>inductor was set to min 1500watts out with out the HV ballasting I got weak
>sparks. I increased to 2000 watts preformed best, I increased to 4000watts
>and barley got any sparks at all and with out the inductive ballast I got no
>sparks and the SRSG barley light up, the whole time the current wouldn't go
>above 21 amps. What is Happening?????? When I get my PFC caps I hope to run
>at 7500 and get some 10 footers, I need some help hear!!!! Next I remove 2
>electrodes from the rsg disk for 120 BPS, the streamers improve, allitle
>longer thicker and more steady and serpent like. but the same thing happened
>when I tried to increase power by less inductance the steamers dwindled to
>nothing. Again the same thing I really hope some one can help me with this,
>is it because of the HV capacitance reactance or what??????? Also im having
>a little problem with tuning it seems best between 5.7 and 5.3 turns.
>
>Also when I use the HV capacitance reactance to limit power it will in
>crease from 7.5kv to 9.6kv Right????????? so when I set it for 3kw the
>capacitors should step it up to 9.6kv for a perfect cap match, or dose
>limiting with hv capacitors not let resonance occur and that is why I am
>having problems????? Should I yank out the caps and run just with inductive
>ballasting on the low side???????
>
>Any and all help is a appreciated greatly!!!!! I plan on running it Saturday
>night weather permitting, so if you could help me out ASAP that would be
>really awesome. Maybe if you live in the Erie PA area you could stop by and
>help through some big sparks.
>
>Nolan Moore