Yamaha: New PWseries S2 drive unit for e-bikes and a B display introduced

The path of Yamaha in the world of e-bike continues and evolves from the first series model in the world dating back to 1993. On this occasion, the Yamaha range for 2023 is strengthened by the launch of the new drive unit PWseries S2 with a series of innovative aspects for Sport and Trail. A solution with a lower weight and greater power, compared to the PWseries ST introduced in 2018. Defined on the strengths of the PWseries ST, according to the indications, the driving experience is refined for different usage needs.

Together with the drive unit also a display B

Given a goal of carbon neutrality towards 2050, Yamaha engine units will be manufactured at MBK Industrie's French factories in San Quentin. Headquarters with ISO 14001 certification for environmental protection and ISO 9001 certification for quality improvement, which currently produces more than 80.000 Yamaha motorcycles, scooters and vehicles.
Together with the new PWseries S2 drive unit, a new one is also introduced display B, an interface with a series of useful information. This is a simple and compatible solution.
The central position allows you to have plenty of space on the handlebars and the power delivery is premised through a 1 A micro-B USB port, which prevents consumption of the smartphone's battery when using apps that require a lot of energy.
The display features selected features, giving the rider valuable information. The 3-inch LCD screen contains information in English, German, French, Dutch, Italian and Spanish. It is a "ready to use" solution, as underlined, which keeps in memory the settings already selected such as the driving assistance mode or the status of the lights. The design allows for quick change of settings and can be removed from the stand with a simple touch in bad weather or, to strengthen stability, you can secure it with a bolt.

The new Yamaha PWseries S2 drive unit

The more compact dimensions allow e-bike manufacturers to have greater margin in the technical development of newly developed frames, according to indications. The same small dimensions are also functional from an aesthetic point of view, favoring a minimalist vision. Furthermore, the 20% more compact setting allows the development of advanced frames with shorter chain stays, which allows for a potential increase in overall rigidity for the benefit of handling and traction, according to the indications.
Features of the new PWseries S2 unit also highlight a lower bracket that is 22,8mm shorter than the PWseries ST, resulting in superior efficiency and an accentuated pedaling sensation, according to the information.
The new ISIS interface with the lower bracket axle of the PWseries S2 offers greater rigidity, meeting the needs of e-MTB enthusiasts. Then the compatibility with the double front chain offers greater possibilities for bicycle manufacturers.
With a maximum torque of 75 Nm, is more than 7% more powerful than the PWseries ST and the weight is limited to just 2,85 kg, 16% less than the previous design. As that makes it one of the lightest units in the category. Values ​​which, despite a 20% decrease in volume, allow the new PWseries S2 to have a high power/weight ratio in the multi-purpose unit segment.

Photo: Yamaha Motor