As we are still looking into new dynamic software to check the suspension and ride height system out, still favoring Solid Works premium, but it’s expensive and still do not like the surface modeling side of the package. Therefore would not be using it to model with, so working with the demo to evaluate it at the moment.

Therefore to keep the design work going forward decided to design the roll bar. While looking at the roll bar and how it will be mounted to the chassis, I decided to modify the main chassis rail removing the tail parts and extending the main rails. This has reduced the number of parts in the chassis and the main rails are now shorter and one straight piece.
Thinking about the upper rear chassis components, these are complex to make from steel so they will now be carbon fiber as they will be easier to make. Also this will allow the components to include more complex features, mountings for the fuel tank and the filler neck and cap etc.

This rendering shows the rear chassis area, the blue chassis rail is the new design, removing the red parts, also the grey part is going to be redesigned so that the roll bar mounts directly to the top surface, probably moving the complete cross-member back in the frame