Monterey, CALIF. (2021 Sea Otter Classic) — The Bimotal Elevate is a 750W removable electric bike motor that’s designed to retrofit your existing mountain bike into a relatively light and powerful e-bike.
Electric Bike Report has had an eye on the Bimotal system for quite a while now, but the 2021 Sea Otter Classic was the first time we actually got to ride the system and see it mounted on a bike. In short, it’s relatively discrete, easy to use and surprisingly fun.
Removed from the bike, it’s hard to believe the compact Bimotal system produces the power it does.
The Elevate can consistently produce around 50 Nm of torque and can produce up to 100 Nm in short bursts, according to the company’s CEO and founder, Toby Ricco. It mounts to the bike via the rear brake post mounts and transfers power to the rear wheel through a specially-designed rear brake rotor. In addition to the actual braking surface, that rotor also sports a machined metal cog that meshes with another cog in the motor, transferring power to the rear wheel. Powering it all is a 250Wh battery that sits where your bottle cage would normally go.
The kicker is the whole system can be removed with the flick of a few quick release levers and viola — your retrofitted e-bike is back to a pedal-powered traditional bicycle.
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