Zero Takes Electric Motorcycles to the Street
(Source: Wired)
The dust kicked up by the 24 Hours of Electricross has barely settled and Zero Motorcycles is back with a street-legal electric motorcycle it will have in driveways later this month.
The Zero S builds upon the the technology underpinning the Zero X dirt bike by doubling the size of the battery to deliver 60 miles of electric commuting and corner-carving. The Santa Cruz startup promises a top speed of 60 mph and a zero-to-60 time of about 5 seconds from a highway-legal bike that weighs just 225 pounds.
The Zero X proved its mettle last weekend during an unprecedented 24-hour endurance race where 10 teams log as many as 507 miles flogging the bikes around a track in San Jose. But while the Zero X is strictly an off-road machine, the S is designed for city streets and the occasional back-road run.
The brushed permanent magnet motor produces 31 horsepower and the bike weighs 225 pounds, making the Zero S a little less powerful – but 96 pounds lighter – than a Suzuki DR-Z400SM. With 62.5 foot-pounds of torque on tap, the Zero S has significantly more grunt than, say, the KTM 690 SMC.
Juice comes from a 4 kilowatt-hour lithium ion battery that weighs 80 pounds and charges in less than four hours when plugged into a 110 volt outlet. Zero predicts the battery will last five or six years with normal use. No word on the replacement cost, but an extra pack for the Zero X – which uses a 2 kilowatt-hour pack – costs $3,000.
Power flows directly to the back wheel – no transmission – and the bike offers 9 inches of suspension travel up front and 8 at the rear. Zero wouldn’t offer any details on who’s producing the suspension or brake components.
