Ultra-light 1000bhp axial motor sets new power density record

YASA, a UK-based specialist in axial flux electric motors, has set a new unofficial world record for power density with its latest ultra-light 12.7kg motor prototype. The motor delivers a peak output of 750kW (over 1000bhp), achieving a power density of 59kW/kg—a 40% improvement over YASA’s previous record of 42kW/kg set just months earlier. The motor also offers a continuous power output estimated between 350kW and 400kW (469–536bhp). Unlike theoretical models, this prototype is fully functional and undergoing real-world dynamometer testing, demonstrating significant advances in thermal management, precision engineering, and compact design without relying on exotic materials. This breakthrough places YASA far ahead of competitors, whose latest motors typically achieve power densities between 13 and 25kW/kg, with YASA’s continuous power density alone surpassing many rivals’ peak outputs. Supported by the UK’s Advanced Propulsion