EVOA’s new E1 outboard is rated for 200 hp at the prop, delivering instant full-torque hole shot of an axial-flux electric motor into a powerhead less than half the weight of a comparable four-stroke gas outboard. EVOA’s team of engineers and technicians has designed complete, integrated power systems with motors, drives, batteries, throttle, dash, and telematics for boatbuilders. Cooling systems are also available, including for salt water, as well as DC fast charging and Level 2 240-volt AC rapid charging.
EVOA’s E1 axial-flux motors come from its partnership with YASA, a wholly owned subsidiary of Mercedes-Benz. YASA motors powered a Drive eO PP03 high-performance automobile to win the Pike’s Peak International Hill Climb in 2015 and 2016, the first EV to do so outright. Rolls-Royce broke the world speed record for an all-electric flight with YASA motors in the Spirit of Innovation at 345.4 mph. Jaguar’s Vector V20E set an electric water-speed record in 2018. Other notable YASA applications include the Ferrari 296 GTB sports car and the Curtiss 1 Bike.
These are high-performance designs tested at maximum stress points. Using this groundbreaking technology, EVOA builds boating-performance solutions into its patented propulsion system. At 62 pounds, for 100 hp and 96 percent efficiency, the axial-flux motors are smaller and more powerful than anything seen before. The reduction in mass, while introducing equal amounts of torque, has been the heart of these achievements. The size and versatility of these motors allow EVOA to scale them to a boat buyer’s intended needs. With the ability to stack the motors along a shaft, the power request is progressive. EVOA can independently control the output of each, using the company’s proprietary Ecoflux software. With 800-volt architecture, the horsepower ranges are scalable from 100 to 600.
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Fortescue WAE (formally Williams Racing/WAE) has partnered to produce EVOA’s E1 battery packs. WAE has been at the forefront of EV innovation, with batteries that can hold energy density of 210 kWh/kg. WAE is a supplier of Formula E, LMDh, and Extreme E series batteries. EVOA customizes WAE/E1 packs to handle the waterproofing and impact-resistant maritime demands of high-performance watersports, utilizing the same properties as the automotive-racing packs. This fall, WAE will begin building these 34.5 to 90 kWh packs for EVOA in Detroit. EVOA can connect them in banks ranging from 44 to 207 kWh.
The EVOA motor system can connect with any marine drive system simply by changing the mounting orientation. Without having to alter any fundamental properties, the E1 System can power conventional inboards, V-drives, and sterndrives, as well as the new outboards and a groundbreaking jet drive that the company will introduce at the IBEX Show from October 1 to 3. Current EVOA-powered production vessels include the 420 hp sterndrive, 133 kWh Launch 25GTe from Chris-Craft, and the 440 hp, 550-pound-feet torque 155 kWh Supra EV550 from Skier’s Choice. Field-testing by the EVOA team indicates that for average watersports use, the Supra EV 550 offers around three hours’ runtime on a single charge—plenty for many boaters’ needs. For manufacturers, EVOA can assemble the drives on a custom basis for prototypes or on the assembly line. They stand ready to train technicians for partner boatbuilders, whether for pontoons, wakeboats, tenders or performance boats.
