The load is varied by changing the size of the opening to the fan. Notice the air outlets on the circumference of the fan housing directing the escaping air away from the torque cradle. With the craddle locked by the black delrin block, the engines needle is set for maxium rpm. Then the cradle is released, & the swing position of the weight is noted by the pointer assembly. After the engine is stopped, a beam type torque wrench is placed in the nose cone & the entire unit is rotated for the torque amount.
