Venturi
VBB-3 on the sand at Bonneville.
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The Venturi Buckeye Bullet-3 combines two things we love here at Ars Technica: land speed records and electric vehicles. It’s a collaboration between Venturi—a Monegasque electric car company—and the Ohio State University that aims to break 400mph (644km/h) on the Bonneville salt flats while simultaneously acting as a testbed for future electric vehicles and the young engineers who work on it. Fortunately Columbus, Ohio, is less than a day’s drive from Washington, DC, so I took advantage and paid the land speed car a visit.
VBB-3—its nickname—is the third land speed car to come from the Center for Automotive Research (CAR) in Columbus. Its long, thin shape has been dictated by aerodynamics, unencumbered by the draggy intakes required to feed air-breathing engines. It has a pair of electric motors, each good for 1,500 horsepower (1,119kW) and powered by eight large lithium-ion battery packs. Earlier VBBs set records in 2009 and 2010, but last summer terrible salt conditions prevented VBB-3 from running a proper test program to 400mph and beyond.
Each axle is powered by its own electric motor. The starting point is the same EV motor Venturi builds for its sports cars, running here at a much higher voltage. In fact, there are actually two EV motors in each unit. “It’s two motors sharing a cooling system and a common shaft,” team leader (and former graduate student) David Cooke told us. “It makes more manufacturing sense to build smaller motors and couple them together than trying to build one big motor. Today that motor is putting out about 1,000 horsepower in the dyno, but it’s capable of 1,500.” The team is continuing to develop the powertrain—particularly the inverter control—to give VBB-3 the 3,000hp it needs.
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