Rivian's TM-B electric bike

Summary

Rivian’s micromobility spinoff Also has just taken the wraps off its TM-B e-bike, TM-Q pedal-assisted electric quad bike, and Alpha Wave helmet that represents “a breakthrough in rider safety and connectivity.”The TM-B (aka Transcendent Mobility - Bike) with its 24 x 2.6-inch wheels and integrated front- and rear-lighting looks and functions like nothing else on the market. It features a new pedal-by-wire drivetrain called “DreamRide” developed in-house. The rider pedals a generator, which replenishes the battery, while a separate software-driven traction motor drives the rear wheel via a Gates Carbon belt.The removable battery — available in either 538Wh or 808Wh packs, offering up 100 miles of range — features two USB-C ports. The batteries can be charged over USB-C at 240W, going from zero to full in two hours and 20 minutes or three hours and 45 minutes, respectively. They can also act as a portable power bank for your gadgets. An E Ink display shows the battery’s current charge.As a Class 3 e-bike, it has a pedal-assisted top speed of 28mph (45kph). It also features a throttle good for 20mph where regulations allow, and an astounding 180Nm of torque on tap — enough to flatten steep hills and make quick starts off the line when carrying heavy loads. Hydraulic disc brakes help bring everything to a controlled stop, while regenerative braking could extend range by an estimated 25 percent.The top frame of the TM-B is modular by design, so the bike can be transformed without tools into a cargo hauler, kid carrier, or cruiser with a bench seat. The seat post is unlocked via a quick swipe from the 5-inch circular touchscreen console. An inverted front fork suspension and air shock will help soak up bumps for riders ranging from 4 feet 11 inches to 6 feet 8 inches.There’s also plenty of security baked in that automatically activates and deactivates when the rider is nearby. It locks the battery, back wheel, and frame, with tamper alerts and bike location provided in re...