Yamaha's debut of the PW-series C2 drive unit for urban commuter ebikes coincides with the 30th anniversary of its PAS, the first modern electric bike.
One would think there'd be more hoopla around this, as Yamaha pioneered the ebike as we know it today. Previously, electric bicycles had essentially strapped motors to a wheel or bottom bracket as an alternative to pedaling. In 1989 Yamaha debuted the world's first ebike with PAS, a Power Assist System, which boosted the rider's pedaling action. The amount of boost depended on pedal pressure, making for a natural and intuitive user experience.
The newest drive unit is the PW-series C2, a 250-watt unit that provides 41 lb-ft of torque, 10% more than its predecessor. The entire unit weighs only 6.6 pounds and has a max support speed of 15.5 mph. Additional features include four modes and a walk assist function. It's debuting in Europe and tailored for European riding habits, but a variant is likely going to make its way to the U.S.
It makes sense for the anniversary drive unit to be for city bikes, as that's where the Yamaha PAS system got its start. Beyond that, however, Yamaha makes several more drive units for applications like speed riding or mountain biking. They sell the drive units for other ebike designers to incorporate into their designs, but Yamaha also has a lineup of their own ebikes. Earlier this year it released a 30th anniversary edition of tits YDX-MORO 07 mountain ebike.
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