Electric HUB motor QS-205 (3-5kW) for Motorcycle

	Technical datasheet Technical information, drawings, test curves

QS 205 3–5 kW Electric Motor for Electric Motorcycles

The QS 205 3–5 kW electric motor is a high-quality brushless hub motor (BLDC) designed specifically for electric motorcycles, scooters, and combustion-engine-to-electric conversion projects. This model is widely used by hobbyist electric vehicle manufacturers, workshops, and e-mobility enthusiasts thanks to its durability, high torque, and excellent performance characteristics.

The QS 205 is an ideal solution for users who require a reliable drive system, smooth operation, and flexible configuration options for different battery voltages and controllers.

High Power and Dynamic Performance

The QS 205 motor offers a nominal power of 3000 W, with the ability to handle peak power up to 5000 W, depending on the controller and supply voltage used. This makes it perfectly suitable for both urban electric vehicles and more demanding builds that require strong acceleration and higher top speeds.

The generous power reserve ensures comfortable riding:

• with a passenger,
• uphill,
• under higher loads,

while maintaining smooth and stable motor operation.

Very High Torque – Perfect for Electric Motorcycles

One of the key advantages of the QS 205 motor is its very high torque output (up to approx. 190 Nm). This provides:

• fast starts from standstill,
• strong acceleration,
• stable performance in all riding conditions.

As a hub motor, it eliminates the need for complex transmission systems, resulting in fewer wear components, quiet operation, and lower maintenance costs.

48–72 V Power Supply and Wide Compatibility

The QS 205 electric motor is designed to operate with:

• 48 V
• 60 V
• 72 V

battery systems. This flexibility allows users to fine-tune the drivetrain to their specific requirements — lower voltages offer improved efficiency and control, while higher voltages enable higher top speeds without sacrificing torque.

The motor is compatible with popular BLDC controllers and is equipped with Hall sensors, ensuring precise control and smooth operation across the entire RPM range.

Robust Construction and Long Service Life

The QS 205 electric motor is built for demanding use. Its reinforced housing, high-quality bearings, and durable windings make it resistant to:

• heavy loads,
• high operating temperatures,
• daily use in various conditions.

The spoke-flange hub design allows installation in wheels of various sizes, offering great flexibility when designing electric motorcycles or scooters.

Ideal for Conversions and Custom Builds

The QS 205 3–5 kW electric motor is an excellent choice for:

• conversion of combustion motorcycles to electric,
• custom electric motorcycle builds,
• high-power electric scooters,
• prototype and commercial EV projects.

Thanks to its straightforward design and proven technology, this motor is equally popular among professionals and DIY builders.

Why Choose the QS 205 Motor?

• high power with strong torque reserve
• proven QS electric motor engineering
• compatibility with 48–72 V battery systems
• quiet, low-maintenance operation
• ideal for electric motorcycles and EV conversions