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.
Cargo bikes and city bikes are common in the e-bike space, but until recently we haven’t seen that many performance road bikes. The Giant Road E+1 is a pedal-assist performance road bike that’s made for more than just commuting; the powerful motor can rank you up to 28mph very quickly on the highest setting so you can rip the flats, join your local group ride, or blast through the mountains with far less effort than a traditional road bike. Don't expect it to feel like a 16lb race bike when you lean it into high-speed turns, but the endurance-oriented geometry allows for an aggressive position on the bike and keeps the it nimble and agile at high speed.
Because e-bikes are capable of greater speeds for longer periods of time than standard bikes, you want extra control. Wider tires provide traction and some bump absorption with little penalty. You also want strong brakes to slow you (and all that extra weight) easily. It's worth looking at the quality of the brakes and investing in bikes with better ones if you can.
Electric Bikes Are Now Legal on Pennsylvania Roadways! Breaking News... According to the Bicycle Access Council of PA in their November 2014 News and Digest, Electric-Assist bicycles are now legal on Pennsylvania roadways as part of Act 154. "Electric-Assist bicycles are now legal on Pennsylvania roadways as part of Act 154. In a convoluted way since first introduced in 2010, a last minute amendment was introduced by Representative Kevin Schreiber (D-95) with...
In the year 1885, a British man named J.K. Stanley introduced what can fairly be described as the first modern bicycle. His Rover bike had wheels of equal size in the front and back and used a chain connecting the pedals and the rear wheel as a propulsion system. It was often marketed as a safety bike in contrast with the unstable Penny Farthing, and was a smashing success. The company went on to develop motorcycles and automobiles, remaining in business until the year 2005.
Written by Gaston Daigle. Gaston is an admin and key contributor at the popular Endless Sphere Technology Forum Batteries and battery packs, the lifeblood of your electric bicycle Plug and play?... not always that easy and certainly not very simple for most of us.. or is it? A good Lithium battery pack can cost as much, and often even more than the rest of your electric bike kit. Picking the right...
Nothing beats the thrill of discovering a new route by yourself, except the joy of sharing that route with your friends. The Dolce is your escape vehicle for long rides, short rides, and all that good stuff in between. Always up for a challenge, and built with our Women’s Endurance Geometry, its smooth and stable handling helps you push boundaries, while vibration-damping Zertz in the fork soak up road bumps for a smooth, fatigue-free ride.
Controllers for brushed motors: Brushed motors are also used in e-bikes but are becoming less common due to their intrinsic lower efficiency. Controllers for brushed motors however are much simpler and cheaper due to the fact they don't require hall sensor feedback and are typically designed to be open-loop controllers. Some controllers can handle multiple voltages.
Electric Bike Technologies has been delivering the best experience in electric bike kit conversion since the company was founded in 2008. Driven by a respected founder and a team of dedicated electric bike enthusiasts, the E-BikeKit™ electric bike conversion systems have been sold worldwide to thousands of electric bike riders and fostered partnerships with some of the best brands in the bicycle industry. The company has been featured on NBC’s Good Morning America and the E-BikeKit system is the only electric bike kit system distributed by J&B Importers, the largest bicycle distributor in the United States.
I know that this topic is new and still contentious, but the community needs to be talking about it because it isn’t going away. The weather up here in Seattle is rainy and cold (no surprise there), so I haven’t ridden my new eBike except around the block to make sure it worked. I can’t wait to hit the trails (legally or illegally). Expect a follow up comparing the eMTB to my other mountain bikes both in how it performs and the feeling I get from riding it. I never thought I would be riding an eMTB, so trust me, I won’t hold back.
China's experience, as the leading e-bike world market, has raised concerns about road traffic safety and several cities have considered banning them from bicycle lanes. As the number of e-bikes increased and more powerful motors are used, capable of reaching up to 30 miles per hour (48 km/h), the number of traffic accidents have risen significantly in China. E-bike riders are more likely than a car driver to be killed or injured in a collision, and because e-bikers use conventional bicycle lanes they mix with slower-moving bicycles and pedestrians, increasing the risk of traffic collisions.
Bosch’s flagship mountain bike system uses a mini drive ring with internal gearing to send its power to the drivetrain. There’s some resistance in the system over 25km/h, but when you first press down on the pedals there’s an impressive surge of power, and it offers good support over a wide cadence range. Its size has an impact on the width of the cranks (the Q-factor) as well as the chainstay length of the frame, and it’s not the lightest system on the market at 4kg for the motor. On the other hand, Bosch is the most established player on the market, and its system has proven itself over many years.
From their, you'll choose the motor size, and trust us, we’ve got plenty of motors to choose from. Whether you’re looking for a gentle 250w motor, a 500-750w motor to do some heavy cruising, or you're looking for a 1000w+ speed machine, we’ve got the ebike you want in your life. See why thousands of customers look to Bikeberry.com when shopping for an Electric Bike.