Discover how Beyond Motors achieves 10kW/kg power density and the lowest weight in the market through yokeless axial flux architecture and 1.2MW scaling.

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Beyond Motors: How Do We Achieve the Lowest Weight and the Highest Power in the Market?

In the engineering disciplines of 2026, "efficiency" is no longer just a buzzword; it is the fundamental constraint of the mission. Whether you are designing an eVTOL with a razor-thin weight budget or a high-performance marine vessel requiring sustained high-torque, the propulsion system is the variable that determines your product's viability.

At Beyond Motors, we don't just participate in the axial flux motor market—we lead it. Our engines consistently deliver the lowest mass-to-power ratio currently available. But how do we achieve these record-breaking metrics while others struggle with thermal bottlenecks and manufacturing complexity?

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1. The Physics of Lightweighting: Yokeless Stator Architecture

Traditional radial motors are inherently "iron-heavy." They require a thick stator yoke to act as a return path for magnetic flux, adding significant weight that contributes nothing to actual torque.

We achieve our industry-leading weight by utilizing a Yokeless and Segmented Armature topology. By eliminating the heavy iron yoke, we remove "dead weight" from the motor’s core. This architectural decision is the primary reason our Beyond Motors AXM series can hit a power-to-weight ratio of 10 kW/kg.

• Mass Reduction: Our motors are up to 50% lighter than radial motors of equivalent power.
• Magnetic Efficiency: By shortening the magnetic path, we reduce hysteretic and eddy current losses, ensuring that more energy from the battery is converted into high-performance e-motors output rather than waste heat.

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2. Maximizing Torque Density through the Power of Cubic Scaling

Torque is the lifeblood of high-authority propulsion. While radial motors scale torque relative to the square of their diameter ($D^2$), our axial flux architecture scales torque to the cube of the diameter ($D^3$).

By generating force at a larger average radius within a slim "pancake" form factor, we achieve a 30-40% higher torque density. This allows our engineers to provide massive low-end torque without the need for heavy, complex reduction gearboxes. For a CTO, this translates to a simpler Bill of Materials (BOM) and a significantly more compact powertrain envelope.

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3. Thermal Management: The Key to Continuous High-Power Output

High power is meaningless if it can only be sustained for a ten-second "hero run." In many electric propulsion systems, the motor must "derate" its power as heat builds up in the windings.

We solve this with our patent-pending water-cooling system. Unlike competitors who rely on external cooling jackets, our system pulls heat directly from the stator windings. This superior thermal interface allows us to offer:

• Unmatched Continuous Power: Our S1 (continuous) ratings are closer to our peak ratings than almost any other motor on the market.
• System Longevity: Lower operating temperatures mean less stress on the magnets and insulation, ensuring that the highest power in the market is also the most reliable.

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4. Scalability and the 1.2MW Stackable Advantage

Achieving high power usually involves increasing the motor's diameter, which creates packaging nightmares. Beyond Motors utilizes a unique stackable architecture.

Because our motors are exceptionally thin, they can be stacked—doubling or tripling the power and torque on a single shaft while maintaining the same motor diameter. This modular approach has allowed us to reach power outputs of up to 1.2MW. This scalability is why Beyond Motors is the preferred partner for heavy-lift UAVs and high-speed nautical applications where power requirements scale rapidly.

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The Engineering Verdict

We achieve the lowest weight and highest power in the market not through a single "silver bullet," but through the perfect intersection of axial flux physics, advanced materials, and proprietary cooling. We have stripped away the excess iron of the past to build the electric propulsion of the future.

Ready to see the data for your specific project?

If your project requires custom specs, sizing, or specific project requirements, our technical team is ready to provide the specific efficiency maps and CAD data needed for your integration.

Start your performance simulation with the Beyond Motors Configurator

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