The paper aims to apply the technical knowledge of recreational vehicles and the skills of using CAD applications for the design and construction of a steel profile frame. After the synthesis of the specific theoretical elements, from the specialized literature, the paper explores subassemblies of a kart, for which it proposes modeling studies. One element under analysis is the go-kart chassis. Designed in two constructive variants, the chassis is investigated in terms of rigidity, using finite element analysis specific to the Autodesk Inventor Professional application. The obtained results and the additional calculation elements, regarding the dynamics of the designed minivehicle, allow the physical realization of a chassis with increased rigidity.

The primary role of the suspension is to ensure the comfort of the passengers but also to protect the vehicle components against mechanical shocks caused by uneven road. It is designed for stability and sudden damping. The suspension system must first and foremost ensure the safety of the passengers of the vehicle but also their comfort. The paper aims to analyze with finite elements the lower oscilating arm in order to optimize the design and find the best material.