So your physiology defies human norms and your spine does NOT twist, eh?
Good to know -- that moves us one step closer to properly categorizing you as an "alien."
ha-ha-ha. There's always someone else who's not interested in the chair, but how I use it. And if you'd care to read it, atleast once more, I said
Conza
I dont thrash around when I drive, so for a normal person driving normally, a swivel chair is NOT a problem
So nothing about my spine not twisting, or any of that, straight ahead, with the wheels locked, it takes a considerable effort to move the chair *tests by moving arms up and down attached to wheel* nope, chair didn't move, funny that. The chair will move easily - if I move side to side, intentionally *tests pedals, again* no, see, still the chair remained straight ahead until I wanted to turn to talk to someone who came into the room, then I moved back, and low and behold, no movement.
So you see, whatever the combination, possibly I am very heavy, 190-200 pounds or something (88kgs?), so moving my arms and legs if I were... 15kgs lighter, may be enough to move the combined weight of me and the chair... but I seriously doubt it. So the chair only moves when I voluntarily move it, doesn't interfere at all with GT5.
I haven't watched hundreds of people in real cars, obviously as a kid both my parents, later friends and co-workers occassionally, but all of them seem to drive just like me, in a calm and relaxed manner, only spending as much energy as required to say, turn a wheel left, or, push a brake pedal to the floor - granted none of these people (or myself on the road thankfully) were racing when I observed them, but I draw from these observations that their and my driving style on real roads, seems exactly the same; well in terms of energy used, or atleast effort put in.
So between the roughly 20 people including myself I've seen driving real cars, I deem this chair to be suitable, so long as the user playing GT5 doesn't unnecessarily jerk their weight around, which may cause the chair to turn, minorly, possibly not even enough to notice, but when I drive, my back is fairly relaxed, my arms, legs and neck aren't, but thats because I'm sitting up almost perfectly straight, just leaning forward slightly.
I promise, I'm not claiming on having some super human skill with chairs, quite the opposite, I'm simply can't see how a normal person, driving normally in GT5 (racing), would use enough energy to knock the chair around, even with the RedBull X2010, no problems here.
I've almost certainly said it before, but I'll say it again, this chair does not move unless I want it to. I unlock the wheels, it slides around, I push from the ground with my legs, it swivels, but when its in race position, locked down, and I'm dead ahead at the wheel, nothing is moving, when I turn the wheel left or right, nothing else is moving, when I push the brake pedal really fast and hard, nothing, else, is, moving.