Selecting the best hub motor for an e-bike application requires analyzing key performance factors, accurately calculating power and torque requirements, evaluating motor types, understanding motor controllers and considering wheel integration.
You will need to take into account the desired top speed, the total weight of the bike, the expected gradient and the riding range. Calculate the estimated power output (in watts) required based on the weight of the bike, the weight of the rider, the speed and the climbing ability. This may seem cumbersome, but Lunyee can help you calculate the power.
Determine wheel size and transmission to obtain the torque required for level ground acceleration and hill climbing. Measure the total inertia of all rotating parts. High starting torque provides better acceleration.
Hub motors are available in brushless, geared, mid drive and direct drive configurations. Brushless motors are more efficient and durable, but cost more. Geared hub motors provide high torque. mid drive motors are more weight balanced for the vehicle.
When specifying a hub motor, please consider wheel size compatibility, axle type, braking requirements, in addition to the matching of the motor to the accessory to avoid incompatibility and mismatch.
Selecting the ideal e-bike hub motor requires an in-depth analysis of performance requirements, accurate power and torque calculations, knowledge of motor types and controllers, and seamless integration with wheel and bike designs.
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