Re: Sparklength inquiry

• To: tesla-at-pupman-dot-com
• Subject: Re: Sparklength inquiry
• From: FutureT-at-aol-dot-com (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Sun, 27 Sep 1998 20:50:39 -0600
• Approved: terryf-at-verinet-dot-com

In a message dated 98-09-25 20:33:57 EDT, you write:

<< 
 >   Power Input     JohnF    JHCTES
 >   680 W           42"      15"
 >   2100 W          64"      35"
 >   8400 W          128"     97"
 >   10 KW           15'      9.3'
 >   26 KW           25'      18.3'
 >   33.6 KW         21'      23'
 >   67 KW           31'      38'
 >   109 KW          45'      55'
 >   134 KW          42'      64'
 >   538 KW          84'      180'
 > 
 >   Note that both curves cross at about 33.6 KW with a 21 and 23 ft spark
 > length. The streamer sparks are longer below this level and shorter above
 > compared to the controlled sparks. The JHCTES data is from the computer
 > program and the Fig 2 graph in the TC Design Manual. This graph is based on
 > power levels to only 60 KW and has been extended to higher power levels
 > without actual test confirmation.
  >>

John C,

My guess is that since you took the results of various coils of
various sizes and averaged(?) them, you'd be averaging the good,
the bad, and the ugly.  In many cases, small coil = novice coiler,
big coil = experience coiler, thus the big coils will be built better,
work better, be "more efficient".  This will skew the results of the
small coils *understating* their true capabilities, and make them
appear *proportionally* wimpy compared to the big brute (properly
built) coils.  BTW, that's my *old* power curve above, the new one
shows a little better efficiency.  Long sparks seem to need lots o'
power.  (crank 'er up 'til she blows!!)

John Freau  

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