Big Thunder Mountain Railroad Closes After Fire Extinguisher Deployed on Reopening Day at Magic Kingdom

phillip969816 hours ago

You are the only one confused on what was being referenced. It wasnt muddied for anyone else.

Delta-71 day ago

Has the ride done five train operations at all since reopening? All the POVs I've seen so far appear to show just four running at a time (also judging by the train returning to the same side of the station after a circuit).

gorillaball1 day ago

Please tell me this is tongue in cheek?

Nunu1 day ago

Just rode it. Definitely smoother and quieter, while still exciting. The new cushioning of the seats and sides are appreciated. Also the new rubbery material reduces sliding and banging against your ride companion. Didn't feel a speed reduction from how it was before. An overall improvement, imo.

MisterPenguin1 day ago

Applying the brake of a car is acceleration (negative). Hitting it harder because of a vehicle about to slam into you is jerk. The sudden front end collision causing a complete stop is jounce.

MisterPenguin1 day ago

You're getting close. Imagine the front of the train (we'll call it "A") cresting at the top of the hill. A is going at about 5 MPH. The last vehicle (we'll call "Z") is also going at 5 MPH being pulled halfway up the lift hill. As A goes over the crest, vehicles B and C also approach and start to go over the crest. Now, with A, B, and C over the crest, gravity pulls them down. They start accelerating. They get to 10 MPH, then 20 MPH. While that's happening, Z starts to crest at the same velocity of A, B, and C. First 10 MPH, then 20 MPH. When Z crests the hill, Z is going now as fast at A, B, and C, which are now going 40 MPH (gravity's acceleration makes things go faster and faster). So, now, Z starts the decline down the hill at 45 MPH. Z is not only subject to gravity, but is being pulled by the vehicles in the front. A, B, and C had gently crested the hill. Z, however, is being yoinked over it for some air time. Meanwhile, A, B, and C are no longer descending. The track has flattened out. They're on a straightaway at 45 MPH. Big deal. Cars go faster. But with Z being yanked over the crest and down the hill, Z has a different experience that *feels* faster because of the layout of the track (i.e., declining). Everything in motion stays in motion unless acted upon an outside force. But when things alter the course, it is felt as a force. When Z crests the hill, Z is going as fast as A, B, and C. But the change in direction of the tracks (in Z's case, going down) is such a force (or, sudden lack of force free-falling in zero G). While going at the same speed as A, B, and C; Z feels the forces differently because it's going down at 45 MPH, but A, B, and C are leveling out. Different forces. Same velocity. (BTW, physicists use "force" and "acceleration" interchangeably. So, when they say the Earth is accelerating us up, they mean the earth is applying a force upwards keeping us from sinking to the center of the Earth.)

osian1 day ago

There was an infamous Open University episode, called The Jerk and the Jounce, using various rides including Nemesis to illustrate velocity, the rate of change of ve!ocity (acceleration), the rate of change of acceleration (jerk) and the rate of change of jerk (jounce). I got my head around Jerk (which explains why something can be jerky - because it's a rapid change of acceleration) but I think I checked out on Jounce!

flynnibus1 day ago

Because 'acceleration' is generally misunderstood and poorly labeled by the lay. What gives you thrills on a coaster is the twisting, the turns, the air time, the dropping and climbing over hills. The lay talk about 'going fast' - but what the real thing is all that CHANGING direction is actually what is the thrill on coasters.. that's what gives you the G-forces, the air-time, the sensations. That's acceleration - a change in your direction and/or speed - not the speed itself. Speed on its own has no sensation besides wind resistance.. it's the sensation you get going past something at different speeds that gives you that rush. Like racing past a bolder that feels close to you.. it's because the bolder is basically not moving, and you are. And the lay use of the words are generally fine... except when someone is trying to quantify why the ride feels different and trying to use an inaccurate speed measurement to justify their belief. When a roller coaster gets significantly smoother, the amount of change you feel will decrease.. it will feel less intense because you're not being subjected to all those minor shifts. 10mph will feel really slow until someone slams on the brakes.. same thing, just exaggerated :)

osian1 day ago

Within the wheel bearings.

osian1 day ago

It's all the same thing, just a question of trying to describe it! We all know that the back doesn't travel faster than the front. Coasters are not faster at the back. This is impossible. But different people at the front and back will experience the same elements at different speeds, forces and times. But different elements and forces at the same times and speeds. What is impossible is different speeds or the same elements at the same times! When people say it feels faster at the back, that literally refers to speed only, so that's why I talked about speed. But they might be misidentifying more intense forces as increased speeds, or perhaps just lumping together all the feelings and labelling them as speed. 20mph around a tight corner, or an acceleration from 0 to 30mph in 2 seconds, will feel more intense than a constant 40mph along a straight section, but people may describe the former as feeling faster.

Ayla1 day ago

Yep. Once the grease/oil melts on the tracks with use/warm temps, they marginally speed up.

Ayla1 day ago

The back does go faster - ie, the whip effect.

flynnibus1 day ago

meh... comparing different things in a discussion of 'is it equal' just muddies the water The guy at the front of the train experiences the ride differently than the guy at the back - every ride cycle. And not because the guy at the front goes faster - but because their position is different hence their ride profile is different. I mean, yes, it's correct that that if you compare two different points in time, you get different absolute references - but you're also comparing different things. Just confuses things.

UNCgolf1 day ago

They wouldn't be traveling at different speeds; he was referencing two different points in time.