The biggest change in the mechanical system is the material of the ocupant cell, which have been changed from steel to carbon fibre. This reduced the weight while maintaining sufficient strength.

Other components, such as the hinges and suspension, have been improved but remain similar in design to those in Allsvinn. however, they had to be adapted to the new method of mounting onto the carbon fibre occupant cell. The solution was to design and manufacture custom mounting brackets, which are used together with integrated inserts in the composite structure.

Another change is the addition of wheel hatches for the front wheels, allowing for a slimmer aeroshell. When the wheels need to turn beyond a certain angle, the hatches open outward to provide additional clearance.

In Allsvinn, the car used two battery packs connected to a junction box, which housed most of the car’s electronics. In contrast, Arvaker features a single modular battery pack made up of four smaller batteries connected together. This modular design makes the system more practical, safer and easier to work with, especially in the event of damage and maintenance. Due to rule Changes the battery pack is smaller in capacity.

The main goal of the high voltage system in Arvaker is to improve safety, useability and repairability, while also increasing overall reliability compared to Allsvinn. In this iteration, less emphasis has been placed on energy efficiency and weight, in favor of electrical robustness and serviceability.