New technology applications on e-bikes

New technology applications on e-bikes
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    Decathlon launches ultra-lightweight 14kg e-bike

    E-mobility has become a new global travel trend, and people’s mobility is gradually changing, with increasing demand for urban commuting and recreation-based travel.

    Electric bikes, as a supplement to people’s daily mobility, are becoming more flexible and maneuverable, and lightweight is becoming a major trend, so e-bikes that are easy to carry and have both performance and lightweight design are becoming more and more popular in the market.

    In response to this demand, Decathlon has recently launched the Van Rysel E-EDR AF, an ultra-lightweight electric road bike.

    Van Rysel E EDR AF

    Van Rysel E-EDR AF is Decathlon’s first ultra-lightweight city electric bike, featuring a minimalist, chic design, lightweight aluminum frame, and a weight of just 14 kg with motor and battery. It is easy to carry around or load on a car rack.

    Even with the lightweight design and reduced weight burden, the vehicle’s performance is not compromised.
    The Van Rysel E-EDR AF model is equipped with a Mahle X35 motor that delivers 40 Nm of torque and offers three auxiliary speeds up to a maximum of 25 km/h.

    The 250 Wh battery is integrated into the frame and offers a range of up to 100 km, which can be extended to 160 km with the addition of a range extender, and the entire powertrain weighs just 3.5 kg.

    In Europe, the power limit for e-bikes that do not require a license, insurance or driver’s license is 250 Wh.

    Decathlon launches ultra lightweight 14kg e bike

    Although many manufacturers equip new models with motors with a torque of at least 70 Nm and powerful batteries of around 600 Wh, the weight of the motor and batteries increases accordingly, with the overall weight of the bike basically exceeding 25 kilograms, and the maximum speed is often limited by regulations, with no assistance provided above the speed limit, when the large weight of the body can be a challenge to riding.

    High body weight will hinder riding, especially for older riders, making riding more difficult.

    The Van Rysel E-EDR AF is a perfect match for consumers’ urban mobility needs, as urban cycling vehicles are often combined with cars and other modes of transport, making bikes over 20 kg time-consuming and difficult to load and transport, and some racks are not suitable for carrying heavy bikes. What other best lightest electric bike you can buy?

    The Van Rysel E-EDR AF is equipped with Decathlon’s BC 900 display, which can be connected via ANT+ and Bluetooth to show remaining mileage, assist level, speed, outside temperature and kilometers traveled.

    Van Rysel E EDR AF 1

    It can be connected to the Decathlon Connect app via Bluetooth with a synchronized, customizable display for smartphones (Strava, etc.). The vehicle can also be paired with the Mahle app via Bluetooth to check vehicle data while out and about.

    One of the vehicle’s drivetrains is the SRAM Wireless Electronic Transmission APEX AXS, the latest electronic drivetrain released last summer, with a single 12-speed disc and wireless transmission that not only gives the vehicle a cleaner look, but is also more precise than a mechanical derailleur.

    Available in XS, S, M, L and XL sizes, Decathlon’s new electric road bike is now officially on sale in several countries in the European Union, such as the Netherlands, France, Spain and Italy, with a retail price of €2,800.

    Yamaha introduces bicycle with "all-wheel drive" and "electric steering”

    The Y-01W AWD is a concept e-bike used by Yamaha to promote two-wheel drive.

    The idea of “all-wheel drive” for motorcycles is not a new one, but motorcycle specialist Yamaha is now looking to extend the concept to bikes.

    While four-wheel drive can be beneficial for cars, it seems that a motorcycle or bike could also use two-wheel drive to enhance certain performance and stability.

    Many manufacturers have made several attempts to develop two-wheel drive motorcycles, but few examples have actually made it into mass production.

    It is only recently with the advent of electronic assistance systems that the concept of two-wheel drive has been realized in e-bikes.

    Y O1W AWD

    Yamaha unveiled a two-wheel drive concept bike called the Y-O1W AWD ahead of the opening of Tokyo Mobility Show 2023.

    The product is aimed at the growing “gravel bike” segment, which features more off-road performance than traditional road bikes, but less dirt and forest trails than established mountain bikes.

    On the front of the electric mountain bike (eMTB), the company also intends to show a prototype of an electric power steering (EPS) system.

    Yamaha introduced the WR450F 2-Trac two-wheel drive motorcycle back in 2004, one of the few mass-produced two-wheel drive motorcycles in history.

    This year Yamaha revealed a handful of details about the Y-O1W all-wheel drive concept bike on its website. The company said, “This adventure e-bike combines a mid-mounted motor and a front hub motor as a way to achieve two-wheel drive.

    Features such as coordinated electronic control of the two motors, dual batteries to support long-distance riding, and wide tires give the Y-01W AWD excellent off-road performance. It is a concept model that points the way to many potential riding areas for e-bikes.”

    Y O1W AWD 1

    There is no indication whether Yamaha intends to bring the Y-01W AWD into mass production, but the company already has an established lineup of e-bikes, including the gravel bike segment and the mountain electric bike (e-MTB) market, where 2WD systems could potentially significantly improve performance and reduce rider fatigue.

    To date, e-bikes have been the most prominent application area for hub motors. And given their flexibility in design and layout, they have also been proposed for four-wheeled vehicles. Most current e-bikes use hub motors, but only for the rear wheel.

    Hub motors for the rear wheel of bicycles are preferred because of their simpler layout, suitability for existing bike models, and cost advantages.

    The once short-lived WR450F 2-Trac Yamaha two-wheel drive used a hydraulic drive developed by Ohlins to power the front wheel.

    This demonstrated the main challenge faced by almost all two-wheel drive motorcycles before the electrification revolution: how to connect power from an internal combustion engine to the front wheel away from the engine, and the front wheel had to remain free to steer and adapt to the violent movements of the suspension.

    Y O1W AWD 2

    Philadelphia, Pennsylvania-based Christini Technologies now offers all-wheel drive motorcycles and conversions.

    Rokon of Rochester, New Hampshire, which produced its first two-wheel drive motorcycle in 1958, also currently produces two-wheel drive motorcycles and claims to be “the world’s earliest and longest-running manufacturer of all-wheel drive motorcycles.”

    In addition to the two-wheel drive Y-01W AWD, Yamaha also said it will show the Y-00Z MTB at the Tokyo Mobility Show, a somewhat conventionally styled eMTB with electric power steering (EPS). The Y-00Z MTB comes with a mid-drive motor, but no front hub motor.

    Yamaha says EPS uses technology developed for its existing e-bikes. “Based on the “”Yamaha Motocross DNA”” concept, the system fully demonstrates the possibilities of eMTB technology.”

    The company added, “It combines a split arrangement of the drive unit with an EPS system that employs a magnetostrictive torque sensor, which has been validated on our PAS line of electric-assisted bikes. The system achieves excellent handling and stability in off-road riding.”

    SAMEBIKE XD26 Hybrid Electric Bike-2

    The “split layout of the drive unit” refers to the fact that the motor’s small drive sprocket is located above the pedal sprocket, rather than being integrated with it. Yamaha, however, did not elaborate on what advantages this layout offers.

    Chocolatezhu
    Chocolatezhu
    Hi, I'm an experienced writer about mechanic and an expert on bike and e-bike tech who appreciates practical, beautifully-engineered things. And of course, I love cycling.
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