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BigRed™ - Fayetteville, TX - April 16, 2003

The two universal joints connect the engine to the compressor via the propeller shaft.  The belt and pulleys seen next to the clutch are the turntable drive.  The drive pulley spins at 4600 RPM transferring that power to the lower pulley and jackshaft at the same speed.  An idler pulley can be seen in the back.  Another belt from the jackshaft connects to a gearbox that in turn drives a chain to the turntable.  The square box in the lower left foreground houses the electrical connections over the four slip rings that provide the moving portion of the siren with electrical power and remote control.  There is a cover that goes over that box that's off in this picture (we do have it).