Aircore Mobility’s press release from the Consumer Electronics Show (CES) in Las Vegas headlines, “Sustainable, air core, axial flux, liquid cooled e-mobility motor achieves superior power density and efficiency to extend vehicle range for applications that drive, fly or sail” The company promotes its efficiency, high current density, and economy of manufacturing as prime factors in its success. The printed circuit board (PCB) stator is claimed to be 10 times more reliable than a conventional stator, smaller, and lighter. By replacing the iron core of a conventional motor with a PCB stator, “Mechanical losses are reduced, efficiency is increased and noise and vibration are significantly reduced.” Several stator/rotor combinations can be “stacked” with a single housing to allow greater power outputs. Cooling is an important element in the motor. Aircore uses a liquid cooling technique, “That allows the coolant to be in direct contact with the stator, mitigating heat across a larger surface area, enabling high overload capability and extended …