Built from pieces of PyroGoRound, this monster has 5 degrees of motion:
1) The main fork rotates on a vertical axis.
2) The 15' arm rotates on a horizontal axis at the top of the fork.
3) The 5' arm rotates around an axis parallel to the 15' arm
4) The rotor rotates around an axis parallel to the 5' arm
5) The burner angle, as in PyroGoRound
A big difference between this and other pieces in this series is that motion 2) Is NOT a full circle. The end with the burners will swing up and over the top, but when it approaches the bottom, it will compress a large spring that will smoothly bounce it back in the opposite direction. Thus the name.
The controls will be interesting. Generally, one will not directly control the directions of the burners. The computer will decide these based upon these controls:
A) A crank-wheel, horizontalness specifies direction/magnitude for motion 1), verticalness specifies direction/magnitiude of motion 2).
B) A knob that springs to the middle, specifies direction/magnitude of motion 3)
C) A knob that springs to the middle, specifies direction/magnitude of motion 4)
D) A knob that springs to the middle, specifies direction/magnitude of motion 5) -aka - the "spin button"
Software will calculate the burner angles for each motion, mix them, and send signals to the motors to set each burner's angle. Pyroticulation operates the same way, but with only 3 degrees of motion. The calculations in this piece will be a lot more complex, involving a lot of trigonometry.