By Dennis Chung
Harley-Davidson‘s electric bicycle sub-brand Serial 1 has revealed its initial line-up of four electric bicycles. The debut line-up of pedal-assist ebikes range in price from $3,399 to $4,999 and will initially launch in the U.S. and Germany. Serial 1 is accepting pre-orders now, with deliveries expected to begin in March 2021.
The launch line-up includes the “urban playbike” MOSH/CTY and the RUSH/CTY commuter bike which will be offered in regular and step-thru frame designs plus a higher performance RUSH/CTY SPEED version. All four models share similar components including integrated lighting, hydraulic disc brakes, a belt drive, and a Brose S Mag electric motor.
The motor claims 250W of continuous power and 66 lb-ft. of torque, which should be more than enough to help climb steep hills and enable quick starts from a stop.The motor is mounted near the crank for a lower center of gravity. An electronic torque sensor measures the amount of pressure applied to the pedals and calculates how much assistance is required. The motor offers four ride modes: Eco for gentle assistance, Tour for maximizing battery usage, Sport for for higher performance and Boost for countering steep hills or strong headwinds. There’s also a walk assist function to make it easier to push the ebikes while on foot.
For the MOSH/CTY, RUSH/CTY and RUSH/CTY STEP-THRU models, the motor is limited to a maximum assistance speed of 20 mph while the RUSH/CTY SPEED bumps that up to 28 mph. All four models have aluminum frames with internally-routed cables. The motors are powered by lithium-ion batteries integrated into the lower frame that can be removed for off-the-bike charging. The battery comes in two sizes, a 529 Wh pack that claims a 2.6-hour charge time and a 706 Wh pack claiming a charge time of 3.5 hours.