Re: Better performance

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

Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com> 

blowing (or sucking) the gap makes a huge difference. The caps might be
rather weak TC performers as well, especially if they have a high esr/esl
with that many in series. For motors (every type that is imaginable, and
small salient pole synch ones, perfect for nst coils) I use
http://www.schulzemfg-dot-com/m_salientpole.htm
Speaking of which, what would be the minimum hp (saw a 1/500 there, didn't
think they made synch motors that small) to spin a 4"x 1/8" acrylic disk
with 2 electrodes made of 2 acorn nuts each (3600rpm, for shorter dwell
time) without having it lose synch/hunt ? I'm making a 8.75kv/35mA version
of one of those BH-10 vacuum testers (with 20x the spark, plus with the
120hz buzz it will sound cool) and size and weight of the whole thing
matters.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, December 08, 2003 8:10 PM
Subject: Better performance


 > Original poster: "Sam W." <HAZAA_69-at-hotmail-dot-com>
 >
 > I have a coil running on a 12/60 nst
 > 4.5" x 30" secondary w/21 AWG magnet wire
 > Primary:8 turns of 10 AWG insulated wire
 > Spark gap is a single static with no pressurized air for quenching
 > mmc 25 0.33 uF caps rated at 600VAC in series to make 12500VAC 0.0133uF
 > choke 200 turns 21 AWG
 > 4" flexible aluminum ducting covered in aluminum tape
 > 2" flex aluminum ducting covered in aluminum tape
 > (double toroid)
 >
 > im getting like 3" breakout, with only 9" going to a grounded pole. I
 > couldnt get any thin walled copper tubing, so i used insulated wire rated
 > at 15 kv. if i replace the primary and change the spark gap will i get
 > bigger sparks? im reading about people with similar setups getting like
3-4
 > ft. sparks. This was my first coil, and i did it for science fair. I was a
 > little dissapointed with performance. I dont want to use a rotary gap,
 > cause i cant get a synchronous motor, and asynchs will blow my nst. PLEASE
 > HELP!
 >
 >