"Blue Thunder" stands over 7' high.

The secondary is made of 7/8" wall, 20" dia. green sewer pipe, wound with 14 Ga., 3kV insulated wire, 262 turns approx. 42" winding length.

Note the adjustable coupling primary (height of the primary can be adjusted relative to the secondary).

Blue Thunder throwing 10+ foot white hot lightning bolts to the ceiling of the Large Machines Lab at New Mexico State University where it still resides.

Note that the straight line distance to the bottom corner of the lamp shown in the upper portion of this photograph is 10-1/2 feet from the toroid - and we had many strikes to it!

Blue Thunder shown in a time exposure.

At Maximum smoke, Blue Thunder threw 12 foot sparks.

A picture of Blue Thunder's predecessor (Secondary on this coil was a Sonotube which eventually shorted out).

Blue Thunder has the same overall height, diameter, and used the toroid shown in this picture.

For size comparison, I stand 5' 11".