Our gearbox technology eliminates rear wheel gearing. Hardened steel spur gears are protected from the elements within a sealed, oil lubricated enclosure. Our patent-pending sequential gear change mechanism uses an electric actuator housed inside the gearbox to achieve rapid and consistent shifting performance. Power is then transferred to the rear wheel via a belt or heavy duty chain.


Our proprietary motor technology is fully integrated with the gearbox, forming a single compact drive unit. Our novel reduction gearing arrangement enables a high torque output, with a very small footprint.


Our integrated downtube battery will use the same mounting points as a Shimano battery, making it straightforward for bike manufacturers to adopt our full powertrain package.

We are raising investment!

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e-Bike Drive Unit

Gearbox drive unit with integrated motor

Transaxle_new logo_white background_isometric tilted view

Transaxle Drive Unit

High power multi speed differential drive


Internal downtube battery with BMS

As seen in


Mark Ravilious

Founding Director

Mechanical engineer, cyclist, and environmentalist with 15 years’ experience within the wind turbine, automotive and electronics sectors.

Craig Gault

System Engineer

Mechanical Engineer (MEng) skilled in part design, development of control systems, embedded c++, and PCB design. Previous experience working in robotics.

Steven Shand

Business Development Manager

Brand builder, with expertise in product design and brand management in the bicycle and outdoor industry.

Jonathan Nicholson

Mechanical Engineer

Engineer and cyclist, with +15 years experience in R&D and NPI within the wind, wave energy and energy storage sectors.

Peter Slotwinski

Project Manager

Project manager and electrical engineer with experience in electronics and motor technology development in the automotive sector.

Contact Us

Castlebrae Business Centre, EH16 4BB, Edinburgh UK

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