Why the hysteria surrounding the X2 rollercoaster, when 4 G's isn't remotely enough G-force to cause brain bleeds? A peak of 4 G is about average for a rollercoaster..

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• yogurt@lemmy.world ⁨7⁩ ⁨hours⁩ ago

  If 4 G’s was enough to cause fatal brain bleeds, then I’d assume stunt pilots, astronauts, and fighter pilots wouldn’t exist. And you can’t train your brain not to bleed.

  G forces are good for measuring sustained force in one direction, relevant when you’re worried about fluids draining somewhere. Pilots are trained not to make an inverted turn that would be 4Gs towards their head, because that drains too much blood into your brain and will cause a stroke. 4Gs towards your feet or back on the other hand is no problem. You can’t just have some G number and say that’s safe.

  NASA cancelled the Ares I rocket because even though the linear acceleration was less than 4Gs, it vibrated, and the astronauts all the way on one end of a 100 meter long vibrating stick would be getting jerked back and forth. Instead of excessive blood pressure popping a blood vessel, the threat was sloshing brain tissue stretching out and tearing blood vessels.

  Looking at some video of X2 it’s pretty obvious how people would get a brain bleed. It’s trying to rotate people while they go around the track, and the hydraulics visibly suck and are shuddering and jerking like crazy. If people’s legs are flopping around like limp noodles, their brain on the other end of that rotation is going to be sloshing and twisting and that’s eventually going to tear something in somebody. The ideal design of the coaster was probably safe but unlike a fixed track where it either breaks or it doesn’t some 4D hydraulic system requires a lot of money to keep it ideal.

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• Lydon_Feen@lemmy.world ⁨14⁩ ⁨hours⁩ ago

  It’s not the maximum G force being experienced that is causing the issue. If that was the case, all jet fighter pilots would be brain damaged.

  I’m pretty sure it must be sudden changes in direction sloshing the brain around inside the cranium.

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  • HeyJoe@lemmy.world ⁨13⁩ ⁨hours⁩ ago

    Yeah thats the issue with this ride. When i looked at them they all say its a very rough ride and your head is thrown into the sides several times throughout which may not be a huge issue for a lot of people, but for it to be bad enough to even do this to a few people now and again is kind of terrifying. They gotta fix it, im not even sure why thats up for discussion.

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• one_old_coder@piefed.social ⁨15⁩ ⁨hours⁩ ago

  more than 100 clients who allege brain injuries of varying severity

  Everything is fine.

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  • coasterrider@lemmy.cafe ⁨14⁩ ⁨hours⁩ ago

    Brain injuries from what? It’s been established that 4 G’s can’t cause brain-bleeds. 4 G’s is average for a rollercoaster. Some even go up to 6 yet these 6 G rollercoasters aren’t causing brain-bleeds.

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    • Bane_Killgrind@lemmy.dbzer0.com ⁨14⁩ ⁨hours⁩ ago

      there’s nothing unusual about the G-forces of the X2

      So this is disingenuous, the whipping motions that the riders experience on the x2 are much different than the higher g shockwave …fandom.com/…/Shock_Wave_(Six_Flags_Over_Texas)

      You can see the way the track is designed, the riders are pushed down and back into the seats with a gradual increase in force on the highest g loop.

      I’d agree with you that 4gs isn’t enough to harm a healthy adult, but the attraction has a responsibility to provide an accurate presentation of the risk and should account for riders that unknowingly are at risk. If they aren’t accounting for riders that have an invisible abnormality, they shouldn’t operate the ride.

      There’s no marketing material on these rides that say “only ride if you do not have any abnormal cardiovascular physiology” and if they did I’d wonder what kind of screening they expect their riders to pass.

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