The Espin is powered by a 350-watt motor that’s rated for trips up to 50 miles (depending on the terrain and assist level). Once depleted, the battery fully charges in roughly five hours. Thankfully, Espin makes it easy to remove the battery, allowing you to quickly recharge it at home or in the office between trips. A backlit LCD control hub displays your basic metrics and battery life while in transit and LED headlights add a touch of light when needed.
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A letter from Casey Evans to Electric Bike Technologies, makers of the E-BikeKit™ electric bike conversion kit system. This one of kind adaptive electric stroller was designed by students from California State University-Sacramento using two 500w direct-drive hub motors controlled by a single E-BikeKit system. Thank you for enabling me to take my daughter hiking! My name is Casey Evans and my daughter, Montel, was born with a very rare...
BATTERY POWER The Lithium-Ion Manganese battery power pack is lightweight, technologically advanced, and safe. EcoBike battery packs are UL and CE approved, exceeding safety and quality standards in the U.S. and E.U. EcoBike batteries are specially designed and manufactured for the EcoBike by a subsidiary of Lenovo / IBM ThinkPad. These batteries deliver the maximum consistent output and longevity. EcoBike batteries have been tested and proven, with over 100,000 units manufactured and a failure rate of less than 1%.
Prices have rarely been this low, with perhaps only the Xiaomi Himo electric bike that we covered costing less, at $261. Of course that e-bike is only available in China for now, unlike the Stark Drive Mini that can ship to the US, albeit for an extra $200 shipping fee. (Spoiler alert: I was able to procure a Xiaomi Himo via a friend in China, and assuming I can get it into the country, we’ll have that review coming up.)
By 1898 a rear-wheel drive electric bicycle, which used a driving belt along the outside edge of the wheel, was patented by Mathew J. Steffens. Also, the 1899 U.S. Patent 627,066 by John Schnepf depicted a rear-wheel friction “roller-wheel” style drive electric bicycle. Schnepf's invention was later re-examined and expanded in 1969 by G.A. Wood Jr. with his U.S. Patent 3,431,994. Wood’s device used 4 fractional horsepower motors; connected through a series of gears.
After you decide which style of e-bike you want, consider the class. In the US, there are three classes defined by the type of assist and how fast the motor will propel you. Most electric bikes sold are class 1 or 3. Class 1 bikes have a motor (max 750w) that assists while you're pedaling, up to 20 mph. Class 3, also known as “speed pedelec” can also have up to a 750w motor, but it can assist you up to 28mph. Both of those are allowed in most states and cities without license. Class 2 have throttles that don't require you to pedal to get a boost. They're allowed on most streets, bike lanes, and paths, but less popular than the other classes and not covered much here (because we still love to pedal and the greater distances pedal assist bikes can cover).