The majority of our work is solving challenging transmission engineering issues for the world’s automotive manufacturers, but whatever the application, if it has gears, DSD is perfectly placed to offer a solution.

Our engineers have worked on everything from prosthetic hands, to oil rigs and everything in between. We can provide a turnkey service from initial concept through to prototype builds, or supply solutions to particular challenges you are experiencing.


A customer from the bio-medical sector required a low cost prosthetic hand with the ability to grasp and grip. The design was constrained by the need to avoid conflict with existing patents. The biggest challenge was the tight package available for the actuation system. DSD engineered an automatic two-speed gearbox that provided the ‘grasp and grip’ function required from the prosthetic.

Two prototypes have been built and successfully tested and the design is ready for production once patent protection has been secured.


DSD understands the specific requirements of this specialised industry, in which the end products must be light in weight yet robust, competitively priced and able to give reliable performance with minimal maintenance.

We have worked with some of the most famous names in the sector on light agricultural products, high performance leisure vehicles and light off-road utility vehicles. We have produced designs for individual gear sets and complete transmissions, and solved axle noise problems.