EngineersYASA Motors’ proprietary axial flux motor is smaller and lighter than its competitors due to more efficient use of key materials (both magnetic and structural) and simple low cost manufacturing processes. This powerful combination enables the Company to produce motors with higher peak and continuous power and torque density at lower cost than its competitors.

YASA Motors has built on exclusively licenced patent applications from the work undertaken by founder Dr Tim Woolmer whilst working on his DPhil at Oxford University and now has numerous patent applications covering the key subsystems (rotors and stator) of its unique axial flux or pancake style motor.  The patent applications cover the critical aspects of axial flux motor design and manufacture including thermal, structural, magnetic and manufacturing processes

ManufacturingManufacturing processes

The YASA motor is manufactured in a highly repeatable, low cost and automated way, suitable for all levels of volume production. Our simple manufacturing technique takes advantage of the Yokeless And Segmented Armature design, and leads to significantly reduced production costs. The manufacturing processes are scaleable to large volume, and for such applications, licensing and other business models can be discussed with YASA.



Custom MotorsBased on the principles of the YASA topology, YASA Motors is capable of producing the smallest volume, lightest weight motors in its class. Standard products are suitable for many applications, but our broad engineering team is capable of working on applications from the prototype stage all the way through to high volume production

The YASA 750 and YASA 400 axial flux motors achieve power densities of up to 10kW/kg and torque densities which are significantly better than the nearest competitive motor topology. High power densities are achieved at relatively low speeds (2000-9000rpm) which make the motor ideally suited for hybrid and generation markets.

As well as our standard products, YASA creates custom products for volume manufacture which meet a specific torque, power and speed requirement at the highest operating efficiency at the lowest possible unit production cost.


Test Capability

Test rigsYASA operates three dynamometer test rigs that enable testing up to 10,000rpm, 800Nm and 400kW. The bespoke dynamometers are run with in-house developed software enabling a wide range of thermal and performance tests to be undertaken. A wide range of customer drive cycles can be tested with high dynamic and continuous loads. Please contact YASA for further information.