This report presents the execution of a thesis work regarding the development of a modular chassis for an electric vehicle. The work is based on a concept by Cubix Drives AB. In this thesis work, their concept has been further developed in order to ensure that it can withstand the loads that the components are subject to when the vehicle is being used.

Throughout the work, by using CAD- and FEA-software's, the components have been designed and exposed for load cases that intends to simulate possible scenarios during off road driving. As the stresses were identified the components have been improved to keep the stress levels below the fatigue limit.

The components have been assembled into a chassis designed to utilize predetermined components regarding the electric drives, steering mechanism and power source that should be able to withstand the loads that it is estimated to being subject for when driving in a forest environment.

Suitable manufacturing methods, materials and surface treatments have also been chosen. Further work is required mainly regarding the brake system but also regarding adaption for the electrical wiring and control boxes. Other areas of application for the chassis have also been investigated, such as a boat trailer and a dumper.