Rotating about its teardrop center, the Ar Ruthiane's unique hourglass support arms grasp bullet shaped motor housings. At 48” in diameter, the Ruthiane is Matthews’ most substantial fan. The motor heads can be infinitely positioned in 180-degree arcs for optimum air movement; the greater the angles of the motors to the horizontal support rods (up or down), the faster the axial rotation. A slow, controlled axial rotation is achieved by both motor head position and fan blade speed.