For anyone looking to find out if an electric-powered bike can make it up Telegraph Hill's Filbert Street in San Francisco, you'll soon get your chance.
Now that bikes – and walking – are becoming more popular, it's time to answer this question: How fast is too fast on a bicycle? How about a bicycle that uses an electric motor hidden inside the frame? We think the answer, whatever it is, is the same not matter which bike you're on and that going 90 kilometers an hour (56 miles per hour) is a bit much for most every rider. Still, that's how fast Hungarian inventor Istvan Varjas claims his "invisible" motor bicycle can go, and it's a l
When we're not dreaming about super-clean cars, we enjoy getting around town on our bikes. Who doesn't? We haven't had a chance to take the YikeBike, the 21st century version of the penny-farthing, for a spin, but the lucky punks at Engadget did, and it sounds like the crew's short hands-on time was enlightening. After just a few minutes on the bike, they managed to reach "fairly high speeds" and discovered that the hand controls are intuitive. While this first version of the bike wasn't the bes
Notice anything strange about the bike in the picture? The bright red hub isn't exactly subtle, but it does hide some impressive tech. Called the Copenhagen Wheel, this is a device developed by the SENSEable City Lab at MIT that basically can turn a normal bike into a connected electric bicycle simply by replacing your standard rear wheel with this one. The Wheel then adds regenerative braking, batteries, general packet radio service (GPRS), and a motor to your ride. There are also sensors to de
While some think driving around the world in 80 days is a good way to promote the environmentally-friendly possibilities of electric transport, others prefer to take the slow road. In this case, three years worth of slow road. This past May, Guin Valls set out from Beijing, China on a journey powered by sunshine and sweat that won't end until he arrives in London during the Olympic Games in 2012. Aboard a specially-built electric bicycle laden with gear and pulling a small trailer, the Spaniard
One definition of the word elegant is "to be gracefully concise and simple." In the future, the dictionary just might include the GreenWheel as a product that illustrates this principle perfectly. From the MIT Smartcities team that gave us the stackable cars concept and the RoboScooter (still a go), comes a wheel that can turn an ordinary bicycle into a very desirable electric one in an easy, cost effective manner. Enclosing a motor, A123 Systems batteries and a generator into a small aluminum p
Somewhere between a normal pedal-powered bicycle and an electric scooter lies a class of vehicle which keeps the ability to pedal and adds some assisted power via a small battery pack. This new generation of vehicle is just as useful as the good old moped, except that the electric motor is free of pollution, which is something that most certainly cannot be said of the older two-stroke 'peds and even the newest four-strokers.
The folks at Optibike have been building electric bikes for a few years and that experience now manifests itself in their ultimate creation, the new OB1. It takes the signature Optibike part, the patented Motorized Bottom Bracket (MBB) that uses a derailleur system to give you the optimum gear ratio and mates it with a 850W continuous brushless DC motor powered by 20ah of lithium ion batteries housed inside an aluminum monocoque frame. Add to that handlebars, brakes, derailleur, chainring, and c
Let me get this fact off my chest before I write anything else: this thing is flippin' expensive! Alright, now that we're through with that, let's analyze this electric bike, known as Pi. The frame is an aluminum monocoque, meaning that it is a single piece made up of metal which is all a similar thickness. Moving on to the electrics, the batteries are nickel metal hydride, not the better-but-pricier lithium ion. The motor is a 36-volt brushless DC model which produces about 1 horsepower, or 750
In the past couple of decades the bicycle industry in the North America has focused mainly on fancy mountain bikes with full suspension and fast road bikes. While both of these styles of bikes are fairly well suited to their intended applications, the reality is that most people don't find them very comfortable to ride.
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