Mid-Drive Motor (Center Motor， Mid motor)

Definition:

A mid-drive motor is installed at the center of the bicycle frame, in the bottom bracket area, and is connected to the pedal system.

Better Balance: With the motor located at the center of the frame, it distributes the weight more evenly, improving the bike’s stability and handling.
Strong Climbing Ability: Mid-drive motors are directly connected to the gear system, enhancing the bike’s climbing ability and overall power output.
More Natural Riding Experience: Integrated with the traditional pedal system, it provides a more natural riding feel.
Easier Maintenance: The motor is centrally located, reducing interference with maintenance and repairs of other components.

Higher Cost: Mid-drive motor systems are generally more expensive compared to hub motor systems.
Frame Requirements: Requires a compatible frame design, which can limit options.
Complex Repairs: Maintenance and component replacement may require higher technical expertise.

A hub motor is integrated directly into the wheel hub, with the motor and wheel axle as a single unit driving the wheel.

Simpler Structure: Hub motor systems are simpler in design, easy to install, and have fewer components, which reduces maintenance complexity.
Lower Cost: Hub motors are generally less expensive than mid-drive motors. Click here for low cost electric bike
Versatile Installation: Suitable for various types of bicycles, with more flexible installation options.

Increased Wheel Weight: The wheel can become heavier with the motor integrated, affecting the riding feel and handling.
Weaker Climbing Ability: Compared to mid-drive motors, hub motors may have weaker climbing ability, especially under high power demands. When in this situation, you may need to use the gear system properly, will help you climb the hill.
Complex Repairs: If a hub motor fails, the entire wheel may need to be replaced, which can complicate repairs and replacements.

Riding Needs: If you need to frequently climb hills or have high performance requirements, a mid-drive motor might be better. For urban riding or flat terrains, a hub motor might be sufficient.
Budget: Mid-drive motors are typically more expensive. If budget is a concern, a hub motor may be a more cost-effective choice.
Riding Experience: If you prioritize a more natural riding experience and better handling, a mid-drive motor is preferable.
Maintenance and Repairs: For easier maintenance, a hub motor might be more suitable due to its simpler design.