Fourth-dimension roller coaster

Type of steel roller coaster From Wikipedia, the free encyclopedia

Fourth-dimension roller coaster

A fourth-dimension roller coaster is a type of steel roller coaster where riders are rotated independently of the track's orientation about a horizontal axis perpendicular to the track. This feature allows riders to experience inversions without the track rotating upside down. Some fourth-dimension roller coasters are controlled, with seats that rotate based on the spacing of two additional rails on the track. Others are free-spinning, where the seats flip primarily due to forces exerted by the ride's elements, offering a different experience during each ride.

Quick Facts Status, First manufactured ...
Fourth-dimension roller coaster
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'X2' (formerly 'X') was the first fourth-dimension roller coaster in the world.
StatusIn production
First manufactured2002
No. of installations18
ManufacturersArrow Dynamics (discontinued), S&S Worldwide, and Intamin
Riders per row4
Restraint StyleOver-the-shoulder
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History

In 1996, John F. Mares, a corporate attorney, invented a fourth-dimension roller coaster concept and holds six US patents related to the technology of their spinning seat systems: U.S. patent 5,791,254, U.S. patent 6,098,549, U.S. patent 6,227,121, U.S. patent 6,386,115, U.S. patent 6,477,961 & U.S. patent 6,606,953. In this concept, riders control the spinning action themselves.

The first fourth-dimension roller coaster to be built, X2, which opened at Six Flags Magic Mountain in 2002, was designed and patented by Alan Schilke.[1][2] In 2007, Intamin launched a variation of the fourth-dimension roller coaster under the name ZacSpin.[citation needed]

Design

Summarize
Perspective

Arrow Dynamics and S&S Worldwide

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A) Rotation of seats
B) Seat on axle
C) Rack gear
D) Four rails

Arrow Dynamics was the first company to produce a fourth-dimension roller coaster, lending its name to the ride style. The trains feature seats capable of rotating forward or backward, 360 degrees in a controlled spin. This is achieved by having four rails on the track; two acting as per normal, and two to control the spin of the seats. The two rails that control the spin of the seats, known as "X Rails", vary in height relative to the track, and spin the train using a rack and pinion gear mechanism.[citation needed]

The first installation, X,[1][2] was a prototype and cost Arrow Dynamics and Six Flags itself a lot of money due to technical difficulties and design flaws. In 2002, the park sued Arrow Dynamics, which went into bankruptcy. Since then, Arrow was bought out by S&S Worldwide and became the company's steel coaster division, S&S Arrow. In 2006, a second installation opened at Fuji-Q Highland in Japan under the name Eejanaika.[3] A third installation opened in 2012 at China Dinosaurs Park in China under the name Dinoconda.[4] The original X coaster at Six Flags Magic Mountain reopened as X2 in 2008 with new, lighter trains and improved reliability and effects.[5]

Intamin ZacSpin first generation

The Intamin ZacSpin was developed in response to the Arrow Dynamics fourth-dimension roller coaster. Some of the main differences between the Intamin and Arrow Dynamics/S&S Worldwide versions are the uncontrolled rotation of the seats, which produces a different ride each time, no need for an additional rail, and single cars with two riders back-to-back. Since these single cars do not rotate around the riders but around a common point quite far back behind their backs, this gave rise to complaints of rider discomfort. Another notable difference is the absence of any lateral movements, causing some enthusiasts to not consider the rides to be fourth-dimension roller coasters due to the fact that all movement is restricted to a two-dimensional plane.

The roller coaster Kirnu at Linnanmäki in Helsinki, Finland, opened for the 2007 season and was the first of its kind. Later that year Inferno opened at Terra Mítica in Benidorm, Spain with an identical compact layout. In 2009, Insane opened at Gröna Lund in Stockholm, Sweden with a different track layout. In 2011, the first ZacSpin in the United States opened at Six Flags Magic Mountain as Green Lantern: First Flight, and was themed to the DC Comics superhero of the same name. It features the same layout as Insane.

S&S Free Spin

In late 2012, S&S Worldwide unveiled a new concept called Free Spin which features a similar ride to Intamin ZacSpin. Each vehicle features two seating rows, and each row rotates independently. As the axis of rotation is at the center of mass of each guest, rider comfort is significantly improved. Like with ZacSpin, Seats spin freely, but during several track sections a system of magnets forces a controlled inversion.[6] The first installation of a 4D Free Spin was Batman: The Ride at Six Flags Fiesta Texas in 2015.[7]

Intamin ZacSpin second generation

In 2016, Intamin announced an updated version that like Free Spin also features a vehicle with two seating rows rotating independently, and an axis of rotation at the center of mass of each guest to improve rider comfort.[8]

Pax Bumerang

In 2023, Russian amusement ride manufacturer Pax unveiled two concepts for shuttle fourth-dimension coasters. Like the S&S and Intamin versions, the track is vertically stacked, and the seats spin freely.[9][10] The smaller model pulls a 16-passenger train up the outside of an approximately 98-foot (30 m) spike, then drops it into an outside raven turn. The train then travels up a shorter spike before rolling back down it and traversing the same layout backwards. This model is listed at a length of 390-foot (120 m) and a price of 42,000,000 , or US$570,264.77.[11] The larger model pulls a 20-passenger train up the inside of an approximately 130-foot (40 m) spike, dropping riders into an inside raven turn, then an outside raven turn stacked above it. The train then reaches the top of the 560-foot (170 m) track and rolls back, traversing the layout backwards to the station. This model is listed at a price of 72,000,000 , or US$977,596.74.[12] The first Bumerang was announced to open in 2025 at Balalyk Park in Kyrgyzstan.[13]

Inversion ambiguity

There is considerable debate within the roller coaster community as to whether or not the spinning of these coasters qualifies as an inversion for the purpose of records. Guinness World Records gave Eejanaika the record with 14 inversions. However, other more coaster-specific record bodies such as the Roller Coaster Database do not recognize this claim and instead count only track inversions, which gives the record of 14 to The Smiler at Alton Towers in Staffordshire, United Kingdom.[14]

Installations

More information Name, Park ...
NameParkYearsModelStatusImage
Batman: The RideUnited States Six Flags Fiesta Texas2015 to presentS&S Worldwide 4D Free SpinOperating[15]Thumb
United States Six Flags Discovery Kingdom2019 to present
ArashiJapan Nagashima Spa Land2017 to presentS&S Worldwide 4D Free SpinOperating
The JokerUnited States Six Flags Great Adventure2016 to presentS&S Worldwide 4D Free SpinOperating[16]Thumb
United States Six Flags Great America2017 to present
United States Six Flags Over Texas
United States Six Flags New England
Wonder Woman CoasterMexico Six Flags México2018 to presentS&S Worldwide 4D Free SpinOperating[17]
DinocondaChina China Dinosaur Park2012 to presentS&S Worldwide 4th DimensionOperating[18]
Dragon SlayerUnited States Adventureland Park2021 to presentS&S Sansei 4D Free SpinOperating[19]
EejanaikaJapan Fuji-Q Highland2006 to presentS&S Arrow 4th DimensionOperating[3]Thumb
InfernoSpain Terra Mítica2007 to presentIntamin ZacSpinOperating[20]Thumb
InsaneSweden Gröna Lund2009 to presentIntamin ZacSpinOperating[21]Thumb
John Wick: Open ContractUnited Arab Emirates Motiongate Dubai2022 to presentS&S Worldwide 4D Free SpinOperating
KirnuFinland Linnanmäki2007 to presentIntamin ZacSpinOperating[22]Thumb
TumbiliUnited States Kings Dominion2022 to presentS&S Sansei 4D Free SpinOperating[23]
X2
Formerly X
United States Six Flags Magic Mountain2002 to presentArrow Dynamics 4th DimensionOperating[2]Thumb
Green Lantern: First Flight
was to be relocated to La Ronde as Vipère
United States Six Flags Magic Mountain2011-2017: operated
2017-2019: inactive
Intamin ZacSpinRemoved[24]
[25]
[26]
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Canada La Ronde2019-2022: stored
2022: cancelled
Cancelled; in storage
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See also

References

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