In a friction drive motor, a small, solid wheel rotates against the side of the tire in order to drive it. The first motorcycles used the same concept, with a motor mounted above the front wheel. The problem is that the drive rubs at the side of the tire. It's inefficient, and it quickly wears the sidewall away. Tires need to be replaced every couple hundred miles. For this reason, you'll seldom see electric bikes with this type of drive anymore.

Electric bikes or ebikes, widely popular in Europe and China, are steadily making their ascent in the U.S. bike market. Erik Saltvold, founder and owner of ERIK’s Bike Shop, a Midwest-based chain for bike sales and repairs, says the ebike is the fastest-growing specialty bike in the industry. Last October, market research company NPD Group reported that electric bike sales had grown 95 percent in the 12 months ending in July 2017, with sales totaling nearly $65 million.
“Our first-generation bike used the same type of 36-volt, 10-amp-hour battery,” he says. “It got between 20 and 30 miles of range, and that’s riding with pedal assist. Using just the throttle you might get 20, less if you’re running on sand or up hills. The charge time is also problematic; with that kind of battery you’re looking at four to six hours, not 90 minutes.”
Gearing: none (many hub motors, one motor revolution = one wheel revolution), fixed gear reduction for more torque, varies when geared motor drives the chain through the bicycle gears which increases torque about 50% (in low gear) for better hill-climbing and offers better top-end speed (in high gear) than direct drive systems using motors of similar wattage.
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In addition, Kalk weighs under 155 pounds — less than half of traditional motorbikes. Cake customized parts of the drivetrain and implemented an interior permanent magnet (IPM) motor. On a single charge, the bike travels up to 50 miles and as a bonus feature, maintenance is minimal due to the fact there are few moving parts thanks to its lack of a combustion engine.
The downside to this mountain-bike build and specification is obviously the weight, at 24.5kg the Trekking feels heavier than the other bikes on test, and rightly bills itself as suitable for heavier riders, too. As with the other bikes here, this is only really a problem for smaller riders, or riders needing to take the bike up or down steps regularly. With its bomb-proof build, full guards and heavy-duty rack, the Haibike is the perfect choice for a burly rider or for doomsday preppers, ready to out ride the apocalypse.
This past July 1st we moved our location to Croydon, PA and doubled our space. Additionally we're looking to hire at least 2 additional employees! This is all to support our expanding conversion kit business and to support some new business we have planned starting in September (more to come on that soon). We would like to thank every single one of our customers, partners, associates and fans for your...

A 2008 market survey showed that the average distance traveled in the Netherlands by commuters on a standard bicycle is 6.3 kilometres (3.9 mi) while with an e-bike this distance increases to 9.8 kilometres (6.1 mi).[79] This survey also showed that e-bike ownership is particularly popular among people aged 65 and over, but limited among commuters. The e-bike is used in particular for recreational bicycle trips, shopping and errands.[79]


But this bike isn’t just about the accessories. The powerful 48V 13Ah battery will allow you to pedal for longer, with some riders getting over 100 miles from one charge. The bike can be ridden as pedal-assist or throttle only and it’s equipped with full suspension and puncture-free Kenda tires. It folds up neatly to fit into the boot of a car or for commuting, though at 57 pounds, it’s heavy to cart around. A great value-for-money commuting bike with lots of features.

The final thing I love about this the Riese & Müller Delite GT Touring is the plus size tires. If you’ve ever been on a bike for the majority of the day, you know that any little bit of cushioning can make all the difference. Riese & Müller have provided this extra cushion in their tires. These tires are also excellent for wet weather and some light off-roading if you want to take a shortcut.

If you are a regular bicyclist who wants to add some excitement to your rides or wants some help with those hills, a full sized electric bike is the way to go. If you are considering a bike as a means of transportation more than an outlet for amusement, then a smaller, folding electric bike is the convenient choice. In each category, consider the speed and range you want, as these factors impact price.


Bulls electric bikes with Brose motors will always top the list for any long distance ride. Coming in with a huge 650 watt hour battery, Brose estimates that you can take these bikes over 100 miles on one charge easily. They also have 90 nm of torque, which will pop you right up hills even when you’ve got a full rack of gear in the front and the back.
The downside to this mountain-bike build and specification is obviously the weight, at 24.5kg the Trekking feels heavier than the other bikes on test, and rightly bills itself as suitable for heavier riders, too. As with the other bikes here, this is only really a problem for smaller riders, or riders needing to take the bike up or down steps regularly. With its bomb-proof build, full guards and heavy-duty rack, the Haibike is the perfect choice for a burly rider or for doomsday preppers, ready to out ride the apocalypse.

Rachel L. Davis is an avid bicyclist. But as a working mother of two, with a third child on the way, she doesn’t have time for long bike rides. “In my world, getting my exercise has to be part of my daily life,” says Davis, 36, who owns a marketing strategy company based in Washington. “I live in a hilly part of D.C., and as I’ve become more pregnant, more tired with more children, I don’t have as much energy to be biking 40 miles or biking to Alexandria.”
Over the years our lineup has grown, and as a result, the offering has become more complicated than it needs to be. Specifically, this year we introduced a 500w geared motor option to the lineup and that has created some redundancy. Before outlining changes, we would like to ensure everyone that we will be stocking enough inventory of previously sold parts for a long enough time to ensure all warranties...
Yes, you read that right – north of £4k for a bike. But then, this is basically the top end of the mountain e-bike market, and you do get a lot of bike for your buck: a Yamaha Lithium battery, masterful Magura brakes, mud-slaying tyres, and – my favourite flourish of all – a hydraulic seat post that you can adjust on the move (surprisingly useful when navigating tricky downhill trails, as it means you can depress the saddle out of the way with the press of a button). 
For an overview of Stark Drive Electric Bike, its features and our story click above. Our passion for biking and our determination to take electric bikes mainstream have driven us to create the world’s most affordable electric bike. As technology improves, so will Stark Drive with the caveat that we will always offer the most affordable electric bikes in the world.

James LaLonde, senior brand manager for Cannondale, agrees. He says their entry-level (read: good for beginners and more affordable) e-bike—the Quick Neo—has a battery life that lasts up to 70 miles. “If you ride for a full day, you may want to recharge it before you go to bed. But if you’re just commuting [a few miles], you could use it for a full week before you need to plug in. Then it’s a four-hour recharge when it’s completely dead.” (Of course, you don’t have to wait for it to get to zero if you want a shorter charge time.)
Fat E-Trike from Sun and E-BikeKit™ at Interbike 2014 Fat bikes and electric bikes were all the rage this year at interbike in Las Vegas. It seemed almost every bike vendor at the show has at least one fat bike model in their booth this year. On top of the fats were the electric bikes. And I think it goes without saying that nobody wants to actually pedal a fat...

The UpCycle Eco-Charger is a Powerful Bicycle Generator that Utilizes an E-BikeKit™ Hub Motor and Empowers You to Generate Your Own Electricity!   The UpCycle Eco-Charger was created by Adam Boesel, the founder of The Green Microgym Say goodbye to worrying about environmental disasters and hello to making the world a better place. The UpCycle Eco-Charger is the most efficient, reliable, and powerful bicycle generator ever. Over the past two...
Designed for the same maneuverability as a non-electric bike, this roughly $3,000 model designed for the city can handle hills and distance. Using a Bosch motor for 100-mile cycling on flat or hilly terrain and a lightweight aluminum frame, the Dutch-made Gazelle model aims for a “sporty posture” and “precise cycling performance” in a robust offering.
Automated Transit Networks (ATN), and the small-vehicle subset of Personal Rapid Transit (PRT), are emerging technologies that can help solve the related problems of congestion, dependence on foreign oil, and planetary climate disruption. ATN/PRT offers clean, quiet, responsive public transit with automated non-stop service available 24 hours a day. In addition to these service benefits, PRT costs far less to build and operate than other transit options ¯ and is safer than walking and cycling on nearby busy streets.
E-bikes are zero-emissions vehicles, as they emit no combustion by-products. However, the environmental effects of electricity generation and power distribution and of manufacturing and disposing of (limited life) high storage density batteries must be taken into account. Even with these issues considered, e-bikes are claimed to have a significantly lower environmental impact than conventional automobiles, and are generally seen as environmentally desirable in an urban environment.[65]
Controllers for brushless motors: E-bikes require high initial torque and therefore models that use brushless motors typically have Hall sensor commutation for speed and angle measurement. An electronic controller provides assistance as a function of the sensor inputs, the vehicle speed and the required force. The controllers generally allow input by means of potentiometer or Hall Effect twist grip (or thumb-operated lever throttle), closed-loop speed control for precise speed regulation, protection logic for over-voltage, over-current and thermal protection. Bikes with a pedal assist function typically have a disc on the crank shaft featuring a ring of magnets coupled with a Hall sensor giving rise to a series of pulses, the frequency of which is proportional to pedaling speed. The controller uses pulse width modulation to regulate the power to the motor. Sometimes support is provided for regenerative braking but infrequent braking and the low mass of bicycles limits recovered energy. An implementation is described in an application note for a 200 W, 24 V Brushless DC (BLDC) motor.[43]

4. How to Enter: The Sweepstakes must be entered by submitting an entry using the online form provided on this site. The entry must fulfill all sweepstakes requirements, as specified, to be eligible to win a prize. Entries that are not complete or do not adhere to the rules or specifications may be disqualified at the sole discretion of Electric Bike Technologies LLC. You may enter only once daily and you must fill in the information requested. You may not enter more times than indicated by using multiple e-mail addresses, identities or devices in an attempt to circumvent the rules. If you use fraudulent methods or otherwise attempt to circumvent the rules your submission may be removed from eligibility at the sole discretion of Electric Bike Technologies LLC.


It’s only available in one frame size but the low top tube, adjustable seat and more upright riding position make it comfortable for people of different heights. The low-ride cargo rack and smaller (20-inch) rear wheel lower the center of gravity making the bike easier to maneuver. This is a workhorse of a bike that could easily replace a second car for most day-to-day necessities.
The first step in deciding which Electric Bike is for you is to determine the right style of bike. We have a full range of styles, including, Mountain Electric Bikes, Comfort E-bikes, Commuting E-bikes, Fat Tire Ebikes and even folding bikes. From their, you'll choose the motor size. We offer motor sizes from 100 Watts all the way up to 6000 Watts!
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