[TCML] 1st light after rebuild

["Shaun Epp" <scepp@xxxxxxx>]

I fired up my tesla coil last night.  It was working pretty good till I noticed racing sparks shooting down from the secondary.  They'd start about 2/3 the way up and go down, I guess my coupling is too high.  I never did get it tuned because I didn't want to damage the coil with the racing sparks, but I was getting 3 to 4 foot arcs in all directions.  I didn't need a breakout point.  The coil is louder now than it used to be and the sparks seem brighter.  It's been two years since I've had this thing going and it was pretty exciting.  Is it normal for the racing sparks to start alone the side of the secondary like this.? 


coil specs:

secondary: 4.25 " by 22.25"
toroid is 16" x 5" and is 3 inches above secondary
primary is a flat spiral of 3/16 " copper tubing
primary tap around 10 turns
primary capacitor is 0.0321uF
dual static gap, tungsten rods
NST is 12kv, 60mA
Terry filter

thanks,

Shaun Epp


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