FreeFlow Technology Ltd
FreeFlow Technology Ltd is a UK-based engineering company focused on e-bike transmission architecture. The company develops and prepares patented drivetrain systems designed to improve ride quality, mechanical efficiency and integration within modern electric bicycles.
Our work sits at the intersection of mechanical engineering, system design and real-world manufacturability, with a focus on solutions that perform predictably both under power and when unassisted.
What we do
We develop transmission architectures and supporting system designs for electric bicycles. This includes defining how rider input and motor assistance are introduced into the drivetrain, how torque is managed mechanically, and how systems integrate cleanly into frames, components and service environments.
Our focus is on architecture-level solutions rather than incremental component changes, ensuring that efficiency, durability and ride feel are addressed at the system level.
Why we exist
Many e-bike drivetrains involve compromises between efficiency, ride feel, packaging and service complexity. These trade-offs are often accepted as unavoidable.
FreeFlow Technology was established to address these challenges through a different mechanical approach — prioritising predictable power transfer, minimal mechanical losses and natural ride behaviour, while remaining practical for manufacturing, servicing and long-term support.
How we operate
FreeFlow Technology operates with a deliberately focused internal structure, supported by a network of specialist partners. The company leads system architecture, technical direction and integration strategy, while collaborating with external experts/ OEM’s for detailed design, prototyping, validation, manufacturing input and commercial readiness.
This model allows the business to remain agile and engineering-driven, while ensuring the right expertise is applied at each stage of development.
Origins of the architecture
The core transmission architecture originated from long-term, hands-on development by the company’s founder (Neil MacMartin), informed by experience in bicycle mechanics, system integration and real-world riding behaviour.
Early work focused on a fundamental mechanical challenge: how to introduce high-acceleration motor input into a drivetrain without forcing that energy back through the rider, or dissipating rider effort through motor gearing. This led to the development of a dual-clutch architecture in which rider and motor inputs are mechanically decoupled while sharing a common output.
The resulting architecture separates rider and motor inputs using independent clutch paths, allowing each to contribute torque to the drivetrain without interfering with the other. The concept has been refined through multiple iterations, with design decisions shaped as much by mechanical efficiency, service considerations and manufacturability as by theoretical performance.
Engineering mindset
Our development work is guided by a small number of engineering principles:
predictable and natural ride behaviour
controlled torque paths with minimal mechanical loss
clean integration within modern e-bike designs
serviceability and long-term durability
practical alignment with manufacturing and supply chains
These principles influence every stage of system design, from architecture definition through to validation and partner engagement.
Commercial approach
FreeFlow Technology follows a partner-led approach to commercialisation. We work with system suppliers, OEMs and manufacturing partners to support integration, development and adoption of the technology in line with their production, servicing and support requirements.
Our role is to provide robust, well-defined technical architectures that can be developed and deployed efficiently, rather than pursuing volume manufacturing internally.
Glasgow, United Kingdom • Patented drivetrain architectures • Partner-led development model