This .375 thick protective shroud is necessary because the Dynamax fan is limited to 32,000 rpm. It is mounted to the rear shaft bearing block & rotates with that same block. It serves an additional purpose of preventing the fan blast from hitting the torque craddle. Notice the air outlets on the outer, rear dia of the fan shroud. Also notice the .032 thick pointer, left of the plastic shield, which is fastened to & rotates with the main shaft. This is used to determine torque amounts. A load cell & digital readout will be added in the future.
