jarestel said:
It's NOT at all like the teacups, so being able to handle that or not doesn't tell you anything about your chances on MS.
I disagree. If you get the teacups spinning full blast and lean your head way back, you'll feel much more of the forces that induce sickness in M:S than on M:S. If you can handle that without sickness (albeit with dizziness), I think you would probably handle M:S without sickness as well.
Note this is quite different then keeping your head more or less over the steering wheel on the teacups. In that case, your head (specifically your inner ears) are much closer to the center of the cup, which is hardly spinning at all.
But if you can take your head outside the edge of the cup without feeling ill, I very much doubt M:S would make you sick.
Now it's also possible that if you feel sick doing that on the teacups you may NOT feel sick in M:S, it's just a bit more likely that M:S will give the same sensation.
M:S does lack the orbital motion of the cups (the movement of the cups around), which can produce some disorienting lurches when coupled with the spinning.
The best test for M:S wuld probably be the ride where you are in a spinning cylinder and then the floor drops out. Aside from the psychological threat of no floor, the forces on you body are similar, if different magnitudes.
Still, the teacup test is a good one. I don't think you could find anyone who could lean their head out of a fast spinning teacup who could not also handle M:S without quease.