The Eco mode is great for conserving battery, while Sport mode unleashes the full power of the motor ... upgrades include: The Surron Light Bee X is an exceptional e-bike that brings a unique ...

Read more: 14 Of The Best Harley-Davidson Motorcycles Ever Made Each of Surron's e-bike models has a different ... to its light weight and an electric engine that produces 184.4ft-lbs.

but this one has at least been adapted for use with an open source motor controller. The bike in use here is a model called the Curt from Estonian ebike builder Ampler, which is notable in that it ...