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  • Do you know that exciting feeling when your stomach is right by your brain and your world

  • flips upside down, and you scream with joy and want more?

  • If you answered yes, you clearly like baby showers!

  • Ah the screams of joy when they see the little pink sweater you knitted them.

  • Oh wait a minutethis is about roller coasters!

  • Okay -- we'll do baby showers some other time!

  • Right now, you're about to upgrade from roller coaster fan to expert.

  • Counting down from:

  • 9.

  • Some roller coaster tracks are filled with sand

  • Every company designing roller coasters has their own unique style, and rides across the

  • world and even within one country can be really different in design.

  • One thing is universal though: there will always be a track and high-speed roller coaster

  • trains moving on it.

  • And, those huge entertainment monsters make crazy loud sounds.

  • Roller coaster fans will agree even those sounds vary from ride to ride as a part of

  • their individual style.

  • It has to do with the design of the track, and among the huge variety box beam design

  • makes the loudest sound you won't confuse with anything else.

  • This type of track was designed by Bolliger & Mabillard company, or B&M as it's usually

  • abbreviated.

  • So a box beam track has a spine of steel that is made of hollow rectangular cross-section.

  • There are fin plates out of steel that keep the two rails made of circular steel tubes

  • together.

  • Those fin plates are set apart at regular intervals.

  • When trains move on the rails at impressive speeds, the track gets the vibrations and

  • they are the reason we hear that loud noise.

  • The box beams only make the sound louder because of their size and shape.

  • And even though the sound of B&M roller coasters is basically its signature, it can at times

  • cause some trouble.

  • For example, it gave some major inconvenience to people living across the road from Canada'

  • Wonderland, a theme park in Ontario.

  • It opened in the 1980's in the midst of farmland, but a few years later that farmland

  • became a residential area.

  • It was causing tolerable discomfort first, but then things got really out of hand when

  • they opened their tallest roller coaster everLeviathan.

  • Its height is 305 ft (93 m) and the speed the trains reach is 93 mph (150 km/h).

  • Imagine all the noise it produced!

  • And, to make things worse, it was built right by the front gate of the park and covered

  • some of the parking lot making it even closer to people's homes.

  • When they started complaining, the park management invited an acoustical consultant and they

  • came up with an idea to reduce the noise this beast made using something as simple as sand.

  • Now, the obvious solution was to fill the rails with it, but they realized it would

  • be impossible since they'd have to cut them open and weld them back.

  • It would have made the ride not as smooth as it used to be.

  • So, they decided to work with box beams instead.

  • They cut holes into every box beam and blew sand with an aggregate blower filled with

  • compressed air so that the sand could move up in a long tube.

  • It must have been a pretty tiring job since they had to fill each section of the track

  • one by one because they are all sealed and you can't just work with the whole thing

  • instead.

  • In the end, it all worked its magic!

  • The sand dampens the vibrations of the steel and so the noise levels were reduced significantly.

  • Since this trick was a success, the company used the same technology on other rides, such

  • as Gatekeeper at Cedar Point in Ohio, and Yukon Striker at Canada's Wonderland.

  • This time, they filled the rails with sand before erecting the coasters and so they didn't

  • have to open box beams.

  • Who knows, maybe this trick will become a universal roller coaster design rule in the

  • future.

  • 8.

  • Most roller coasters don't have engines You'd imagine these powerful high-speed

  • mini trains have powerful little motors, but it's wrong.

  • In fact, they move by converting energy!

  • When the train is on top of the track, it has potential energy, and when it falls because

  • of gravity, it transforms into kinetic energy.

  • And this energy conversion keeps going as the train goes up and down on the track.

  • Dr Ted Bunn, chair of the physics department at the University of Richmond in Virginia,

  • compares it to riding a bike.

  • You don't have to work hard as you move down the hill, because you've already saved

  • enough energy from going up.

  • 7.

  • Their loops aren't circular

  • Have you ever noticed the loop-the-loop is never a perfect circle, but looks more like

  • an inverted teardrop?

  • It's not a design flaw, but a well thought-over choice.

  • Thanks to it, you'd stay in the sit when the train goes upside down even without restraints!

  • A loop-the-loop is kind of a centrifuge.

  • When you get to the top of it, gravity is pulling you toward the ground, but acceleration

  • force is pushing you in the opposite direction.

  • Both of these forces are basically equal, and so your body becomes almost weightless

  • for that moment when you are at the top.

  • Thanks to the teardrop design, it's easier to balance the forces.

  • The train gets fast enough by the top of the loop and slows down at the sides where the

  • turn isn't that sharp.

  • So it minimizes the danger of the train going too quickly where it shouldn't be.

  • And then you barf.

  • 6.

  • Height restrictions aren't meaningless Now that you know laws of Physics will keep

  • you in your seat even without a harness when you're hanging upside down, you'd think

  • those height regulations don't actually mean a thing.

  • In fact, they do.

  • In case something goes wrong, and emergencies can happen anywhere, the operators will have

  • to hit the safety break.

  • And the restraints won't be able to protect someone below the minimum height requirements.

  • So don't let kids fake it, if you see they're getting on their tiptoes because they really

  • want to be on that ride.

  • 5.

  • Engineers test rides at theme parks a few times a day

  • Security is everything at a good theme park, and so engineers test the rides for loose

  • bolts, rust, oil or any other prospective dangers.

  • And because they can't test the ride on actual people, they send sandbags down the

  • track at full speed.

  • 4.

  • There's a ride with hidden song selections There's a famous roller coaster in Universal

  • Studios Florida theme park that's called Rip Ride Rockit.

  • It offers its passengers on-ride video from cameras installed in every row, LED lighting

  • and on-ride music!

  • There are twelve riders in every train and each of them has two speakers in their headrest.

  • They get to pick one of 30 songs on a small touch screen on the restraint.

  • However, there are also some secret songs not every one knows of.

  • If you ever find yourself on that ride and want to test this trick, just press and hold

  • the ride logo for 10 seconds.

  • Then, you'll see a 10-digit keypad and you'll be able to dial a three-digit code to play

  • the song you like.

  • Ooh, how about Rocketman!

  • 3.

  • The first roller coasters were inspired by 18th century Russian ice slides

  • Russia is famous for its frigid winters, and so it's not surprising that local people

  • have enjoyed ice-related activities for centuries.

  • They froze water over wooden constructions to make ice ramps and slide down them on blocks

  • of wood and ice.

  • In the 18th century, they built whole snow parks calledRussian Mountainsaround

  • the palaces of Saint Petersburg.

  • This type of entertainment was popular with upper class and even Catherine II herself

  • who had her own mountains by Oranienbaum Palace.

  • La dee da!

  • After Napoleon had been defeated at Waterloo, the Russian soldiers occupied Paris and must

  • have brought the sliding tradition with them.

  • However, it was not cold enough in France to go down actual ice, so they added wheels

  • to sleds.

  • This is how the great grandfather of modern roller coasters was born in 1817.

  • 2.

  • The oldest roller coaster that's still running is over 100 years old

  • The oldest roller coaster in the world that you can still ride was opened in Altoona,

  • PA in 1901.

  • It's called Leap-The-Dips.

  • Hey, you go first.

  • They almost shut it down in 1985, but it was officially proclaimed a National Historic

  • Landmark 11 years later and continued its operation.

  • As for the first ever roller coaster in America, it was opened on June 16, 1884 in Coney Island,

  • Brooklyn.

  • The ride cost one nickel back then, and the maximum speed of it was six miles per hour.

  • That sounds like nothing compared to today's rides, but it was incredibly profitable and

  • made $600 a day, that's equivalent to $15,000 these days.

  • And, it's basically the reason roller coasters became such a craze in the US.

  • 1.

  • The fastest, tallest and longest rides are all in different countries

  • Kingda Ka is currently the tallest roller coaster in the world.

  • It is located in Six Flags Great Adventure in New Jersey and stands proud at 456 feet

  • (139 m) tall.

  • That's taller than the Statue of Liberty at 305 feet (93 m)

  • The longest ride in the world is the Steel Dragon 2000 at Japan's Nagashima Spa Land.

  • It covers 8133 feet (2479 m).

  • The fastest roller coaster in the world is Formula Rosso in Ferrari World theme park

  • in Abu Dhabi.

  • It reaches 150 mph (241 km/ in 5 seconds!

  • And then you barf.

  • Now isn't that impressive?

  • Are you brave enough to go on crazy roller coaster rides?

  • Confess it in the comment section below!

  • Don't forget to give this video a like, share it with your friends (your crazy friends!)

  • and clicksubscribeto stay on the Bright Side of life!

Do you know that exciting feeling when your stomach is right by your brain and your world

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ジェットコースターの主な秘密が明らかに (The Main Secret of Roller Coaster Revealed)

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    juuuddddy に公開 2021 年 01 月 14 日
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