A motor test mount apparatus comprises a mount cylinder having bearings fitted for supporting a bearing rod positioned for rotation within the bearings. A mount block and a capping screw each are axially and threadedly engaged with the bearing rod at opposing ends wherein the capping screw is adapted for drawing the mount block toward the mount cylinder upon rotation of the capping screw. A motor mounting plate is engaged with the mount block and is adapted for selective positioning in a mounting plane orthogonal to a rotational axis of the mount cylinder. A plurality of motor mounting arms are adapted for securing a motor to the motor mounting plate, whereby the center of gravity of the motor may be positioned on the rotational axis by adjustment of the mounting plate position in the mounting plane.