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Schaeffler Free Drive removes mechanical transmission from the bike

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German company Schaeffler has unveiled an innovative electric bike drive system that replaces traditional bike chains with an all-electric drivetrain.

The heart of the Schaeffler Free Drive system is a generator installed in the bicycle carriage. By rotating the pedals, the cyclist drives a generator that converts energy from mechanical to electrical. Electricity is transmitted through a wire to the rear wheel motor, where it is converted back into mechanical energy that propels the bike. The system also includes a battery and control circuitry. The interaction between the nodes is carried out via the CAN bus.

The generator can vary the pedaling resistance depending on the required or selected pedaling effort. If the cyclist pedals faster than necessary, that is, excess energy is generated, it is stored in the battery. There is also a regenerative engine braking function, which also recharges the battery while driving.

The motor power is 250W, which is the limit for electric bicycle motors in Germany.

It is believed that the Free Drive system can be particularly attractive for electric cargo bicycles, especially three or four-wheeled bicycles, where the use of traditional mechanical solutions complicates the design, making it more cumbersome and impractical.

In terms of efficiency, Schaeffler estimates that Free Drive is about 5% less than chain drive.

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Components

In less than a year, the situation on the video cards and processors market may improve. The head of AMD spoke about the shortage of chips

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AMD CEO Lisa Su expressed her opinion on the duration of the chip shortage. According to her statement, in the first half of 2022, the supply is likely to still be limited.

But already in the second half of next year, the shortage of microcircuits will not be as acute as it is now. How much the situation will change, the head of AMD did not predict, but her vision is still better than that of a number of other specialists who predict improvement only in 2023.

It should be understood that AMD itself does not produce semiconductors, so we are talking about improving the situation in general, which will affect not only AMD, but all other companies as well.

In general, so far most forecasts agree that the situation with the deficit will improve at least in the second half of 2022 or at the beginning of 2023, but no one undertakes to predict when the situation will completely return to normal.

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Components

Akasa releases USB 3.2 Gen 2×2 external SSD enclosure

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Akasa has unveiled an M.2 solid-state drive enclosure. Part number AK-ENU3M2-07 converts this drive into an external SSD with a USB 3.2 Gen 2×2 interface with a bandwidth of 20 Gb / s. Installing the drive is done without the use of tools.

Akasa releases USB 3.2 Gen 2x2 external SSD enclosure

The case is made of aluminum and serves as a heatsink to remove excess heat from the drive. The package includes a thermal interface. The kit also includes a braided cable with USB-C connectors at both ends.

Sales of AK-ENU3M2-07 have already started at a price of 70 euros.

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Components

144Hz, Ryzen 7 5800H, and fully featured GeForce RTX 3060 for $ 1,085. Sales of the most powerful laptop Redmi started in China

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From today in China, you can buy not only the Mi Notebook Pro X 14, but also the most powerful Xiaomi laptop at the moment – Redmi G 2021. This model is equipped with a 16.1-inch IPS screen with a frame rate of 144 Hz, an AMD Ryzen 7 5800H processor and a fully functional GeForce RTX 3060 with a maximum power consumption of 130 watts.

Redmi G 2021 received 16 GB of RAM and a 512 GB SSD, a powerful Hurricane 3.0 cooling system with five heat pipes and two 12 V fans, a full-size keyboard with customizable backlighting, Wi-Fi 6, an 80 Wh battery, video outputs HDMI 2.0 and Mini Display Port 1.4, USB 3.2 Gen2 and USB-C ports. The weight of the device is 2.7 kg, the price is 1085 dollars.

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