The Turn Of The Century Electrotherapy Museum http://www.electrotherapymuseum.com 3" PVC Coil tests - Approx. 2000 turns of 26 AWG Testing coil without a topload.  Discharges 12 - 16" in length. With an 8" float for a topload, coil was giving 24 - 32" sparks. An interesting side view of the sparks, close up... Actual size off of camera Ribbon close up discharges Straight on! Straight on again! Power supply:  Two MOTs, 1 Reactance Coil, 8 knife switches connecting binary capacitor .001 - .128 mfd in .001 increments. Cap is set to .096 mfd...   16 series 1/2" Tungsten Spark Gap.  Only 3 gaps are used. Tesla Coil portion - Primary is 1/4" copper ribbon. Unusual diameter to height ratio (C) Jeff Behary - 26. March 2008