Having entered the world of virtual reality last summer I decided to design and construct my own sim rig as I could not find anything commercially available that had all the features I wanted.
I designed my system for flexibility and comfort. It can be used for both racing games and flight sims. The seat frame can be adjusted forwards and backwards so when I am not using the steering wheel and pedals, I can move the seat back over 30 cm which allows me to stretch my legs while still having access to the HOTAS, mouse and gamepad.
Basic Aluminium Frame Design and Dimensions: https://i.imgur.com/D9v0bEd.jpg