Kalkhoff enjoys an enviable reputation by virtue of a long and revered history based upon obsessive craftsmanship and insistence upon only the most indestructible and ecologically attuned processes, materials and components, together with the most stunning and intuitive technologies available. Their bikes are over-engineered to over-perform and yet stubbornly maintain value over time.
“Second, even if you do make bikes in the US, they will be multiple times more expensive than their overseas counterparts and 99.9% of consumers won’t pay that price. When my shop tried selling a US-made bike next to a Chinese bike, with signage that explained why the US-made bike was more expensive, we couldn’t even sell one. Customers would stand there and talk about how they want American-made goods, then they would buy the Chinese bike.”
“At $500 apiece,” he says, “the company would be selling e-bikes at a loss, once they factored in product liability insurance, quality control, regulatory compliance, safety testing, and post-sales service and support. Chinese e-bikes could certainly ‘leak’ into the U.S. market near that cost, be sold as a loss leader, or be marketed directly on eBay, but a fully costed business model could potentially lose up to $250 per bike.”
Electric bikes are categorized by classes: Class 1 ebikes are pedal-assist cycles with a top speed of 20 mph. (Some localities have banned Class 2 and Class 3 ebikes, which are throttle on demand.) The trick to using a Class 1 bike is to, well, pedal. “If the pedals stop, the bike doesn’t go,” says Saltvold, who describes using an ebike as akin to running on a moving walkway in an airport terminal. Whitaker notes that customers say they switch off the pedal-assist to get more exercise, then turn it back on when going up a hill or wanting to increase their speed.
The Ancheer comes with outstanding Shimano Tourney gears in 6 x speeds. This gear system is one of the best in the business. Similarly the front-rear disc brakes are perfectly effective and will bring you to a safe stop even from speed. Speaking of speed, the maximum is 16mph and the bike will travel anywhere between 17-23 miles on a single charge. The battery charges up in 4-6 hours, which is the same for virtually all e-bikes.
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.
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.
In terms of design, the attention to detail is just exquisite. The extra long fenders ensure you’re not going to get wet going through puddles. The cafe lock is hidden well enough to not ruin the look. I do kind of wish that the battery and fork could be that lovely green color, but we can’t have it all folks. For you green haters, it does come in white and black too. There’s also an option for this cute little front carrier if you want to put a bouquet and a baguette in it.
Should an e-bike actually look like an e-bike? Vanmoof think so. With a design and engineering sensibility that’s more Silicon Valley startup than heritage bike brand, Vanmoof is probably the most WIRED of the bikes on test. And the Electrified S has a host of features to prove it. The Bluetooth/proximity activated e-lock (with tamper sensor) that’s built into the frame is a clever innovation, although we're not sure this would be enough theft protection for inner city areas, (where the Vanmoof’s striking design stands out like a jewel on the bike rack). However, for €7 a month, if your bike is stolen, Vanmoof will track down your bike – or replace your bike with a model of the same age if they can’t retrieve it.
Forward-thinking parents are giving up thier SUVs and opting for electric cargo bikes for getting the family around. Cargo bikes are seeing a resurgence in popularity with the rise of electric conversion systems that convert these awesome people movers into family toting electric vehicles. One year ago the Wall Street Journal ran a full page article in their weekend edition entitled The New Station Wagon. Since then the trend for...
FRAME GEOMETRY EcoBike electric bikes have been specially designed with the daily commuter in mind. The frame is constructed from a high-strength, lightweight 6061 aluminum alloy that maximizes safety and durability. The enhanced frame design features comfort ergo-geometry that is more upright than a traditional mountain or road bike. Every EcoBike electric bike is outfitted with suspension on both front forks (except Vatavio) and seat post to deliver a smoother ride.
Electric bikes are here in a big way. Liberated from some of the normal constraints of standard bike design like weight and gearing, e-bike design has exploded; if you can imagine it, someone has built it. From cargo bikes to city bikes, messenger bikes to mountain bikes, road bikes, and even beach cruisers, there is something for everyone. The beauty of e-bikes is they make the joy of cycling accessible to so many people in so many ways.