Not all e-bikes take the form of conventional push-bikes with an incorporated motor, such as the Cytronex bicycles which use a small battery disguised as a water bottle. Some are designed to take the appearance of low capacity motorcycles, but smaller in size and consisting of an electric motor rather than a petrol engine. For example, the Sakura e-bike incorporates a 200 W motor found on standard e-bikes, but also includes plastic cladding, front and rear lights, and a speedometer. It is styled as a modern moped, and is often mistaken for one.
The Nobby Nic tires would work equally well on road, loose dirt, gravel, fire roads, or anything of the like really. The hardtail geometry also isn’t so aggressive that it would be uncomfortable over long distances. Of course, comfort over long distances is key during bike touring. Even though the bike does not come with a rear rack, it does have eyelets for mounting. A rear rack should allow you to carry plenty for a 3-5 day excursion.
“Even if you deal with the tubing supply chain and consumer retail price tolerance, there is no supply chain here for the cables, shifters, crank sets, chains, saddles, and every other part. It would take decades to set all of this up, but you would first have to get consumers to the point where they will pay $1,800 for the bike that they could get for $400.”
What we especially love is how quiet this e bicycle is. If you’re riding down the street or through the park, the gentle hum of the motor is unnoticeable. This is because it’s hidden by the sound of your smooth pedaling. If you’re not into flashy gadgets, any ordinary person would assume you’re riding a conventional peddle bike. This is a great commuter bike.
Those buyers aren’t likely to get a major workout. Researchers from the University of Tennessee found in a study of walkers, ebike riders and traditional bike riders that those who completed a 4.43-kilometer hilly route on an ebike used 22 percent less energy than traditional bikers and 64 percent less than walkers, most likely because the ebikers got to the finish line faster than the others. But perks included higher levels of enjoyment and no need for a shower when they were done.
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.
“Yamaha e-Bikes are in shops, and we’re hearing some great feedback from our first retailers and customers, coast-to-coast, from California to Maryland. From casual commuters to series cyclists, more people are seeing the advantages of incorporating an e-Bike into their daily lives. Yamaha has been the global leader in Power Assist Bicycle manufacturing for more than two decades, and it’s exciting to now rollout the first ever Yamaha e-Bikes in the U.S.”
If the bike is in fact similar to the EB-5, then it is probably a great around-the-city or campus electric bike, but perhaps not the best long distance commuter for rough roads. Though considering the bike won’t ship for at least another 4 months and the US shipping cost will bring the total price of the Spark Drive Mini to $499, impatient riders might be better off with the equally priced and Amazon-shipped EB-5 anyways.
Beach cruiser fans rejoice with the Raleigh Retroglide iE Step Thru. Cruise the boardwalk with maximum style and minimum effort as you enjoy the perks of a 350 watt motor and a top pedal-assisted speed of 20mph. Enjoy the comfort of an upright riding position thanks to the backswept handlebar and take advantage of the cargo-carrying capacity, thanks to the rear rack, to run errands around town or commute to work. With a claimed range of 35 miles, the Raleigh Retroglide is a great choice for anyone who wants to add a little speed to daily cruise.