Hello, I am Julien from Geko Systems. I am very glad you enjoy the GS as much as we do. The GS-105 is more impressive to use than to watch, because while the forces/vibrations are quite powerful, there is little body displacement. For example when you brake during taxiing you expect to feel a proportional force toward the front, and intuitively you prepare for it. You can feel a strong breaking force (up to 40lbs on upper torso) but your body does not move much as you are prepared and resist the force. In classical motion simulators this is the exact contrary: motion is the primary function. If you have questions about the GS please ask.