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In building my mid sized tesla coil; 6x31" secondary 24gauge 1400turns 12 turns 1.75" out 0.25" copper tubing (ROOM FOR ADDING MORE TUBING -12 MORE TURNS) Capacitors: NOT DEFINED YET Spark Gap: NOT DEFINED YET (2) NSTs 15kv 60mA (120mA total) What I need to look at next is the Topload and capacitors. I was trying to figure out the numbers in the Tesla Map software I bought and it looks like I'll need over 80 nF and I dont really know how to even start with the Toploads as I don't know where to buy them at or should I make one? I don't want to spend more than a couple of hundred on a topload. Is a sphere cheaper and what size is needed. When I enter in various sizes it changes my primary turns taping point. Questions are: 1. Do I need to add more primary copper tubing or will too many turns affect the spark size? 2. Torroid or Sphere sizes? Where to buy them or can I make them for this size coil? 3. Capacitance? better to have more or less for this size coil? Thank you for your help. Just getting a bit confused and what to get the right items. Tim _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla