In recent years, innovation in the e-bike industry has been rapid. Electric bikes used to be clunky machines that did not work reliably and looked streamlined. But today, many sleek e-bikes are equipped with such well-integrated motors that they are almost indistinguishable from conventional bicycles. For a long time, e-bike manufacturers relied on wheel hub motors, but now there is a competing design on the market: mid-drive motors. Mid-drive motors have many advantages. So let us take a closer look at why higher-end electric bikes are equipped with mid-drive motors.
A mid-motor gets its name from its position on the bicycle. It is located in the center of the bicycle frame near the bottom bracket, where the cranks are connected. The mid-motor is currently the best solution for electric bikes, most mid-range and high-end e-bikes use this solution.
The Mid-Drive system provides higher power and torque compared to similarly powered hub motors. The mid-drive motor drives the crank instead of the wheel itself, which increases its power and allows it to take advantage of bicycle gears. When the battery is empty, the mid-drive motor is completely disconnected from the axis of the carriage and there is no magnetic resistance. So, when the battery is empty, you can continue to ride unimpeded.
A more technologically advanced mid-drive motor is a combined mechanism of internal transmission gears. Multiple clutch gears form a variable-speed ratchet mechanism inside the motor that increases output torque and provides higher load and climbing capability. In addition, the torque sensor is more sensitive and picks up changes in pedaling force that directly affect the bottom bracket axle, allowing faster acceleration.
Due to the heavy weight of the hub motor, whether on the front or rear wheel, the center of gravity of the bicycle is not balanced.
The mid-drive motor has a better center of gravity balance, does not affect the balance of the bike when riding fast, and does not require additional batteries for counterbalance. That’s why the latest electric bikes have the battery built into the down tube. This also reduces the load on the braking system, improves braking performance, and extends the life of the braking system.
Many components are integrated into the mid-drive motor, and only a few cables lead to the steering controller. This simplified and integrated design gives the bike a cleaner look and is easier to maintain.
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