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Original poster: "Drake Schutt" <drake89@xxxxxxxxx>

How do you arrive at the conclusion that .01uF is almost exactly
right for a static spark gap?  Is there some way of mathematically
calculating this or is it purely experimental?  And is this dependent
on voltage or other factors?


Hi Chris,
I know because I am finishing my coil that is based on the same exact transformer you have. The transformer is the biggest (only?) determining factor i can think of as far as design goes. its basically where you have to start. When you know the voltage and amperage output of the transformer you can determine almost everything else (sort of), definatly required capacitance. I personally recommend wintesla, scratch that teslamap! you can download it here <http://www.download.com/TeslaMap/3000-2054_4-10484887.html?tag=lst-0-1>http://www.download.com/TeslaMap/3000-2054_4-10484887.html?tag=lst-0-1, assuming youre running windows of course (im not at the moment, linux ftw!). its a lot of help! it can help you calculate everything you need to know including your MMC. i dont know how to calculate it thats what the program does! its sort of mathematical, sort of experimetal. (Res, LTR, etc.)

got to run,