Re: tesla virgin no more ! but need help

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

Original poster: "steven hyman" <steve502-at-bellsouth-dot-net> 

I am using cornell dubilier  1600 vt  .15 uf   polypropylene caps  , I now
have 15 each string x2
strings  should be  .01 uf each for a total of .02uf
is this correct ??
in researching this , I thought this would be sufficient

Steve


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, February 05, 2004 10:11 AM
Subject: Re: tesla virgin no more ! but need help


 > Original poster: Bart Anderson <classi6-at-classictesla-dot-com>
 >
 > Hi Steven,
 >
 > Congrats on your first light!
 > more below:
 >
 > Tesla list wrote:
 >
 > >Original poster: "steven hyman" <steve502-at-bellsouth-dot-net>
 > >I have been building my first coil (Researched this lists archives for
 > >over a month ,along with all the websites Thanks), and had first sparks
 > >on Saturday  WOW!!!, about  15 inches, but having some problems, I cannot
 > >figure out, and need some expert advise
 > >
 > >    Spark gap , static type with 6 ,1" diameter x2" long copper pipes
laid
 > > out flat, gap spacing about 1mm  with fan
 > >.  MMC with 2 strings 12 each string(24total of 1600kv .15uf poly's.Total
 > >value .025 uf ??? ( can someone check this)
 > >     I am presently powering this coil with 15/30 NST
 >
 > .0125uf per string if 12 caps of 0.15uF:
 > if both strings are connected in parallel: .025uF
 > If both strings are connected in series: .00625uF
 >
 > >first light was great, ran the coil 10-15 short runs 12-24 inch
 > >sparks.   Then the  spark gap would only fire for about a second and
stop,
 > >after inspecting the MMC realized I had burned 2 caps up ( big holes in
 > >two caps together in series), I replaced these caps, and added 3 more per
 > >string( now qty 15- .15uf 1600kv each per string x 2 strings)) but same
 > >problem, after some evals, my present  situation remains the same , if I
 > >remove the parallel connection between the 2 strings of 15 caps, and use
 > >each string alone, the gap fires ( but no sparks from top load( I can get
 > >spark from topload with breakout), but if I reconnect the 2 strings of
 > >caps , same problem, gap only fires for about a second or two, and
 > >nothing, I have tried the coil using a smaller NST (9/30 )   and the coil
 > >works well all components working with about 15" sparks.
 >
 > How much spacing do you have between caps?
 > What type of caps (p/n)?
 >
 > >4" secondary 1050 turns ,24awg, 21.5 " coil length
 > >12 turn primary 1/4 od, 1/4 spacing( tuned at about 7 turns)
 > >
 > >I suspect the MMC  configuration, but cannot figure this out !! I thought
 > >15 x1600kv caps would suffice for a 15/30 nst (15 x 1600=24kv
 > >any help would be greatly appreciated
 > >
 > >Steve
 >
 > I suspect the MMC as well. It could be mechanical in nature, cap type, or
 > possibly connection. More info would be helpful.
 > Take care,
 > Bart
 >
 >
 >
 >