Re: tesla virgin no more ! but need help

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

Original poster: robert & june heidlebaugh <rheidlebaugh-at-desertgate-dot-com> 

   15Kv x 1.414 =  21.2,  KV     12 X 1.6 KV IS 19.2 KV  LESS THAN NO MARGIN
OF SAFETY. 15 X 1.6 KV = 24 KV IS A VERY SMALL MARGIN OF SAFETY ONLY 2.8 KV.
MAY I SUGGEST YOU ADD AT LEAST 1 0 MORE CAPACITORS TO EACH STRING.
    Robert   H


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Wed, 04 Feb 2004 18:07:59 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: tesla virgin no more ! but need help
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Wed, 4 Feb 2004 18:32:07 -0700
 >
 > 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
 >
 > 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.
 >
 > 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
 >
 >
 >