They did? The dude in the middle just sat there smoking meth every time I was on one of these. I stood up on the wall once, with my whole body perpendicular to the floor. It was awesome!
It's pretty crazy! The farther from the wall your head is, the more you can feel the spinning forces. It definitely felt like I was in a blender by the time I was standing up.
Haha I did that too if it’s the same machine. It had an open top and you just stick to the side as it spins and hinges 90 degrees. There was a chain but you had clearance to flip yourself.
The Gravitron wasn't the open top kind with the chain. That was the Round Up, and it would lift up after getting g up to speed and go almost vertical.
The Gravitron was enclosed and had angled walls. I think the walls were padded and would slide up a bit when the machine was up to speed. Heavier people would have their section slide up sooner than others.
All I can say is I did this on a ride similar to this, perhaps it’s not that machine, but it looks very similar to the post you linked but it was more a solid outside rather than the individual bays in the image.
It was the centrifugal forces I believe as we would literally be stuck to the back wall but with enough strength you could flip yourself 180 and just get dizzy and a head rush.
I literally have no reason to make this up my guy.