Boomerang (roller coaster)

This article is about a roller coaster model called Boomerang. For the roller coaster element known by the same name, see Cobra roll.

Boomerang is a model of roller coaster manufactured and designed by Vekoma, a Dutch manufacturer. The roller coaster model name is from the hunting implement based on the traditions of the Indigenous Australians. As of January 2023^[update], there are 55 Boomerangs operating around the world.

Boomerang
Boomerang at Wild Adventures
Status	In production
First manufactured	1984
No. of installations	55
Manufacturer	Vekoma
Height	35.51 m (116.5 ft)
Length	285 m (935 ft)
Speed	47 mph (76 km/h)
G force	5.2
Capacity	760 riders per hour
Duration	About 1 min 48 sec
Restraint Style	Over-the-shoulder
Inversions	6 [3 on track, but each run traverses the track twice]
Boomerang at RCDB

The roller coaster model was created in the early 1980s and was first introduced at four different parks around the world in 1984.

Design and ride experience

Boomerang's layout design

The Boomerang consists of a single train with seven cars, capable of carrying 28 passengers. The ride begins when the train is pulled backwards from the station and up the first lift hill by a catchcar. After being released, the train passes through the station, enters a Cobra roll element (referred to as a boomerang by the designers) and then travels through a vertical loop. After being pulled up a second lift hill, the train is released to head backwards through each inversion once more, making the total number of inversions per ride six. The train slows down as it passes through the station backwards and then comes to a complete stop in the station. This coaster model is popular among many amusement parks in the United States, but it has appeared at amusement parks around the world.

Boomerang coasters have occasionally stalled, often in the Cobra Roll element. As a precaution, many Boomerang coasters are built with an access platform just under the Cobra Roll/Boomerang element.

During the reverse cycle, riders experience a g force of up to 5.2 when the train re-enters the vertical loop at 47 miles per hour (76 km/h). In back row of the train – the first to enter the loop – this represents one of the most forceful moments seen in steel rollercoaster design.

Variant designs

There are three main design variants based on the Boomerang layout, all of which are produced by Vekoma.

Stinger when it was known as Invertigo at California's Great America

Invertigo

Main article: Invertigo (roller coaster)

The first variant of the Boomerang is the Invertigo. While retaining the same layout as the Boomerang, the Invertigo has inverted track, turning it into an inverted roller coaster. Each car has two rows of seats that are back-to-back, so the riders in the back row of each car would be facing those in the front of the trailing car. The first Invertigo, HangOver at Liseberg in Gothenburg, Sweden was supposed to open in 1996 with a new linear induction motor (LIM) or LSM lift. However, development problems delayed the ride's opening to 1997, and the design was remade to include a traditional chain lift like the original Boomerang. Only four Invertigo models were ever built.

Giant Inverted Boomerang

Stunt Fall at Parque Warner Madrid is one of five Giant Inverted Boomerangs built

Main article: Giant Inverted Boomerang

The second design is known as both the Giant Inverted Boomerang and the Super Invertigo. While maintaining a similar layout to the Boomerang, the track is again inverted and the size of the ride is increased. The track is 270 feet (82 m) longer, the two lift hills are almost 80 feet (24 m) taller and both hills are vertical. As of 2022, four Giant Inverted Boomerangs operate and one was under construction.

Family Boomerang

In late 2010, Vekoma announced that they would be manufacturing a family-friendly model of the Boomerang. The prototype opened at Drayton Manor Theme Park, as "Ben 10 – Ultimate Mission", in April 2011; it was later renamed to Accelerator.^[1] Another model debuted on 17 May 2016 as “Velociraptor”, in the ‘Lost Kingdom’ themed area of Paultons Park.^[2] Unlike the other Boomerang roller coasters, a Family Boomerang does not feature inversions, but it still retains a similar shuttle design. The ride features the two signature end-spikes on (more or less) a figure-8 track layout. Phantasialand added the world's largest family boomerang, “Raik”, in 2016. This debuted in the new themed area of ‘Klugheim’, accompanying the adjacent Taron (an Intamin Blitz coaster).^[3]

Super Boomerang

In 2023, a new variant of the Boomerang model opened in Fantawild Wonderland in China.^[4] This version uses a launch system rather than a catch car lift hill and has a longer layout and fewer inversions than the normal boomerang and is more similar to rides such as Mr. Freeze and the now defunct Batman & Robin: The Chiller, though it has a swing launch rather than a stationary launch.^[5]

Layouts

Layouts of the different variations

Boomerang

Invertigo

Giant Inverted Boomerang

Ride locations

Coaster name	Amusement park	Variant	Original opening	Status
Accelerator Formerly Ben 10 - Ultimate Mission	Drayton Manor Theme Park	Family Boomerang 185 m (607 ft)	2011	Operating	[6]
Aftershock Formerly Déjà Vu	Silverwood Theme Park Six Flags Great America	Giant Inverted Boomerang	2008 2001	Operating Closed 2007	[7] [8]
Anaconda	Luna Park, Tel Aviv	Boomerang	2000	Operating	[9]
The Bat	Canada's Wonderland	Boomerang	1987	Operating	[10]
Boomerang	Bellewaerde	Boomerang	1984	Operating	[11]
Boomerang	Elitch Gardens Theme Park	Boomerang	1999	Operating	[12]
Boomerang	Energylandia	Family Boomerang Rebound	2017	Operating	[13]
Boomerang	E-World	Boomerang	1995	Operating	[14]
Boomerang	Freizeit-Land Geiselwind	Boomerang	2000	Operating	[15]
Boomerang	Fantasilandia	Boomerang	1996	Operating	[16]
Boomerang	Gero Land	Boomerang	1997	Operating	[17]
Boomerang	La Ronde	Boomerang	1984	Operating	[18]
Boomerang	Parc des Combes	Family Boomerang 185 m (607 ft)	2011	Operating	[19]
Búmeran	Parque Diversiones Costa Rica	Boomerang	2012	Operating	[20]
Boomerang	Parque de la Costa	Boomerang	1998	Operating	[21]
Boomerang	Siam Park City Jerudong Park Playground	Boomerang	2007 1996	Operating Closed 2006	[22] [23]
Boomerang	Six Flags Fiesta Texas	Boomerang	1999	Operating	[24]
Boomerang	Six Flags Mexico Rafaela Padilla	Boomerang	1987 1984	Operating Closed 1986	[25] [26]
Boomerang Formerly Flashback	Six Flags St. Louis Six Flags Over Texas	Boomerang	2013 1989	Operating Closed 2012	[27] [28]
Boomerang	Trans Studio Bali, Indonesia Pleasure Island Family Theme Park	Boomerang	2019 1993	Operating Closed 2016	[29] [30]
Boomerang	Walygator Sud-Ouest Zygo Park	Boomerang	1992 1987	Operating	[31] [32]
Boomerang	Wiener Prater	Boomerang	1992	Operating	[33]
Boomerang	Wild Adventures	Boomerang	1998	Operating	[34]
Boomerang	Worlds of Fun	Boomerang	2000	Operating	[35]
Boomerang	Family Fun Tivoli Karolinelund	Boomerang	2015 2005	Operating Closed 2010	[36] [37]
Boomerang (飞旋过山车)	Wuhan Zhongshan Park	Boomerang	2017	Operating	[38]
Boomerang	Yerevan Park	Family Boomerang Rebound	2021	Operating	[39]
Boomerang: Coast to Coaster	Six Flags Darien Lake	Boomerang	1998	Operating	[40]
Boomerang: Coast to Coaster	Six Flags Discovery Kingdom	Boomerang	1998	Operating	[41]
Boomerang Hyper Coaster Formerly Boomerang	Trans Studio Cibubur, Indonesia Knott's Berry Farm	Boomerang	2019 1990	Operating Closed 2017[42]	[43]
Boomerang Roller Coaster	Amrapali Funland	Family Boomerang 185 m (607 ft)	2014	Operating	[44]
Boomerang-Roller Coaster	Al-Shallal Theme Park	Boomerang	2004	Operating	[45]
Búmeran Formerly Boomerang	Parque Diversiones Playcenter São Paulo	Boomerang	2012 1997	Operating Closed 2012	[20] [46]
Bumerang	Tashkentland	Boomerang	1995	Operating	[47]
Cobra	PowerPark	Boomerang	2005	Operating	[48]
Cobra	Walibi Belgium	Boomerang	2001	Operating	[49]
Cloud Shuttle	Fantawild Wonderland Tongshan	Super Boomerang	2023	Operating	[4]
Diabolik Formerly Two-Face: The Flip Side	Movieland Park Six Flags America	Invertigo	2015 1999	Operating Closed 2007	[50]
Family Coaster (合家欢过山车)	Happy Valley	Family Boomerang	2017	Operating	[51]
FamilyBoomerang RollerCoaster	Happy Valley	Boomerang	2020	Operating	[52]
Fireball	Furuvik	Family Boomerang	2017	Operating	[53][54]
Flashback Formerly Vampire Formerly Boomerang	Six Flags New England Kentucky Kingdom Nanhu Amusement Park	Boomerang	2000 1990 1985	Operating Closed 1999 Closed late 1980s–early 1990s	[55] [56] [57]
Flashback Formerly Boomerang: Coast to Coaster	Six Flags Great Escape and Hurricane Harbor	Boomerang	1997	Operating	[58]
The Flying Cobras Formerly Carolina Cobra Formerly Head Spin/Mind Eraser	Carowinds Geauga Lake	Boomerang	2009 1996	Operating Closed 2007	[59] [60]
Frontline Charge (火线 追击)	Fanta Park Glorious Orient Ningbo	Family Boomerang Rebound	2021	Operating	[61]
Frontline Charge (火线 追击)	Fanta Park Glorious Orient Ganzhou	Family Boomerang Rebound	2021	Operating	[62]
Generator	Walibi Rhône-Alpes	Boomerang	1988	Operating	[63]
Giant Inverted Boomerang (巅峰一号)	Jin Jiang Action Park	Giant Inverted Boomerang	2011	Operating	[64]
Goliath Formerly Déjà Vu	Six Flags New England Six Flags Magic Mountain	Giant Inverted Boomerang	2012 2001	Demolished Closed 2011	[65] [66][67]
Good Gravy!	Holiday World & Splashin' Safari	Family Boomerang	2024	Operating	[68]
High Speed Round Trip	Bao Son Paradise Park	Family Boomerang Rebound	2019	Operating	[69]
Invertigo Formerly Face/Off	Kings Island	Invertigo	1999	Operating	[70]
Jolly Rancher Remix Formerly Sidewinder	Hersheypark	Boomerang	1991	Operating	[71]
Light Explorers	Energylandia	Family Boomerang Spirit	2021	Operating	[72]
London Loop	Global Village	Family Boomerang	2017	Operating	[73]
Luna	Liseberg	Family Boomerang	2023	Operating	[74]
Pine Tree Rocket (飞跃狗熊岭)	Oriental Heritage, Shanxi	Family Boomerang Rebound	2021	Operating	[75]
Pine Tree Rocket (飞跃狗熊岭)	Fantawild Land	Family Boomerang Rebound	2021	Operating	[76]
Quantum Leap	Sochi Park	Giant Inverted Boomerang	2014	Operating	[77]
Ragin' Cajun Formerly Boomerang	Dixie Landing' Hafan y Môr Holiday Park	Boomerang	2001 1987	Operating Closed 1998	[78]
Raik	Phantasialand	Family Boomerang	2016	Operating	[79][80]
Recoil Formerly Thunderbolt	Wonderla Amusement Park Bangalore Aladdin's Kingdom	Boomerang	2016 1994	Operating Closed 2009	[81] [82]
Recoil Formerly Zoomerang Formerly Demon Formerly Titan	Wonderla Amusement Park Hyderabad Alabama Adventure & Splash Adventure Wonderland Sydney World Expo Park	Boomerang	2016 2005 1992 1988	Operating Closed 2011 Closed 2004 Closed 1988	[83] [84] [85] [86]
Recoil Formerly Colossus	Wonderla Amusement Park Kochi Habtoorland	Boomerang	2017 2004	Operating Closed 2011	[87] [88]
Saven	Fårup Sommerland	Family Boomerang Spirit	2020	Operating	[89]
Sea Serpent	Morey's Piers	Boomerang	1984	Operating	[90]
Snow Slope	Lusail Winter Wonderland	Family Boomerang Rebound	2022	Operating	[91]
Space Shuttle Max Formerly Cobra	Enchanted Kingdom West Midland Safari Park	Boomerang	1995 1985	Operating Closed 1991	[92] [93]
Spartan Race (Chúa tể đấu trường) Formerly Flying Dolphin Coaster	VinWonders Phú Quốc	Family Boomerang 185 m (607 ft)	2015	Operating	[94] [95]
Speed of Sound Formerly La Via Volta	Walibi Holland	Boomerang	2000	Operating	[96]
Stinger Formerly Invertigo	Dorney Park & Wildwater Kingdom California's Great America	Invertigo	2012 1998	Demolished Closed 2010	[97][98][99]
Stress Express	Fantawild Dreamland, Fujian	Boomerang	2013	Operating	[100]
Stress Express	Fantawild Adventure	Boomerang	2012	Operating	[101]
Stress Express	Oriental Heritage Jinan	Boomerang	2015	Operating	[102]
Stress Express	Fantawild Dreamland, Hunan	Boomerang	2016	Operating	[103]
Stress Express	Oriental Heritage Jiujiang	Boomerang	2015	Operating	[104]
Stress Express	Oriental Heritage Cixi	Boomerang	2016	Operating	[105]
Stress Express	Fantawild Asian Legend	Boomerang	2018	Operating	[106]
Stress Express	Silk Road Dreamland	Boomerang	2019	Operating	[107]
Stunt Fall	Parque Warner Madrid	Giant Inverted Boomerang	2002	Operating	[108]
Tidal Wave	Trimper's Rides	Boomerang	1986	Operating	[109]
Triops Formerly Tornado Formerly Unknown Formerly HangOver	Bagatelle Sommerland Syd Allou Fun Park Liseberg	Invertigo	2012 2005 Never opened> 1997	Operating Closed 2011 Never opened Closed 2002	[110] [111] [112] [113]
Turbo Dino (角龙战车)	Zigong Fantawild Dinosaur Kingdom	Family Boomerang Rebound	2022	Operating	[114]
Tweestryd	Wildlands Adventure Zoo Emmen	(Double) Family Boomerang	2018	Operating	[115]
Velociraptor	Paulton's Park	Family Boomerang	2016	Operating	[116]
Volldampf	Erlebnispark Tripsdrill	Family Boomerang	2020	Operating	[117]
Whirly Roller Coaster Formerly Boomerang	Floraland Continent Park Qingdao International Beer City	Boomerang	2015 1995	Operating Closed 2010	[118] [119]
Wipeout Formerly Missile Formerly Coca-Cola Roller	Pleasurewood Hills The American Adventure Theme Park Glasgow Garden Festival	Boomerang	2007 1989 1988	Operating Closed 2004 Closed 1988	[120] [121] [122]
Zoomerang	Lake Compounce	Boomerang	1997	Operating	[15]
The Quest	Emerald Park	Family Boomerang Spirit	2024	Operating	[123]
Zydeco Scream Formerly Boomerang	Six Flags New Orleans Parc de Montjuic	Boomerang	2000 1990	Removed in 2024 after being SBNO from 2005 to 2024 Closed 1998	[124]
Unknown	Fantawild, Mudan	Family Boomerang Rebound	2023	Under Construction	[125]
Unknown	Fantawild, Rencheng	Family Boomerang Rebound	2023	Under Construction	[126]
Unknown	Fantawild, Liangyuan	Family Boomerang Rebound	2023	Under Construction	[127]
Unknown	Oriental Heritage, Henan	Family Boomerang Rebound	2024	Under Construction	[128]
Unknown	Oriental Heritage, Jiangxi	Family Boomerang Rebound	2024	Under Construction	[129]
Unknown	Fantawild, Yunnan	Family Boomerang Rebound	2024	Under Construction	[130]
Unknown	Fantawild, Jiangsu	Family Boomerang Rebound	2024	Under Construction	[131]
Unknown	Warner Bros. Movie World	(Double) Family Boomerang	2024	Under Construction	[132]
Unknown Formerly Déjà Vu	Mirabilandia Six Flags Over Georgia	Giant Inverted Boomerang	TBD 2001	In Storage Closed 2007	[133][134]
The Flash: Vertical Velocity	Six Flags Great Adventure	Super Boomerang	2025	Under Construction	[135]

See also

• Invertigo (roller coaster)
• Giant Inverted Boomerang

References

1. "Drayton Manor - New for 2011". Drayton Manor Theme park Limited. 24 November 2011. Archived from the original on 24 November 2011. Retrieved 16 July 2024.
2. "Rollercoaster evacuated a week after opening". The Guardian. Press Association. 26 May 2016. Retrieved 16 July 2024.
3. Wolber, Marcel; Carey, Kate (7 June 2016). "Phantasialand: Theme park opens new rides in time for summer holidays". General-Anzeiger Bonn (in German). Retrieved 16 July 2024.
4. "Cloud Shuttle - Fantawild Wonderland (Tongshan, Xuzhou, Jiangsu, China)".
5. "Super Boomerang | Vekoma Rides Manufacturing BV".
6. Marden, Duane. "Accelerator  (Drayton Manor)". Roller Coaster DataBase.
7. Marden, Duane. "Déjà Vu  (Six Flags Great America)". Roller Coaster DataBase.
8. Marden, Duane. "Aftershock  (Silverwood Theme Park)". Roller Coaster DataBase.
9. Marden, Duane. "Anaconda  (Luna Park Tel Aviv)". Roller Coaster DataBase.
10. Marden, Duane. "Bat  (Canada's Wonderland)". Roller Coaster DataBase.
11. Marden, Duane. " (Bellewaerde Park)". Roller Coaster DataBase.
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21. Marden, Duane. "Boomerang  (Parque de la Costa)". Roller Coaster DataBase.
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23. Marden, Duane. "Boomerang  (Siam Park City)". Roller Coaster DataBase.
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31. Marden, Duane. "Boomerang  (Walygator Sud-Ouest)". Roller Coaster DataBase.
32. Marden, Duane. "Boomerang  (Zygo Park)". Roller Coaster DataBase.
33. Marden, Duane. "Boomerang  (Wiener Prater)". Roller Coaster DataBase.
34. Marden, Duane. "Boomerang  (Wild Adventures)". Roller Coaster DataBase.
35. Marden, Duane. "Boomerang  (Worlds of Fun)". Roller Coaster DataBase.
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37. Marden, Duane. "Boomerang  (Tivoli Karolinelund)". Roller Coaster DataBase.
38. Marden, Duane. "Boomerang  (Wuhan Zhongshan Park)". Roller Coaster DataBase.
39. Marden, Duane. "Boomerang  (Yerevan Park)". Roller Coaster DataBase.
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41. Marden, Duane. "Boomerang Coast to Coaster  (Six Flags Discovery Kingdom)". Roller Coaster DataBase.
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43. Marden, Duane. "Boomerang  (Knott's Berry Farm)". Roller Coaster DataBase.
44. Marden, Duane. "Boomerang Roller Coaster  (Amrapali Funland)". Roller Coaster DataBase.
45. Marden, Duane. "Boomerang-Roller Coaster  (Al-Shallal Theme Park)". Roller Coaster DataBase.
46. Marden, Duane. "Boomerang  (Playcenter São Paulo)". Roller Coaster DataBase.
47. Marden, Duane. "Bumerang  (Tashkentland)". Roller Coaster DataBase.
48. Marden, Duane. "Cobra  (PowerPark)". Roller Coaster DataBase.
49. Marden, Duane. "Cobra  (Walibi Belgium)". Roller Coaster DataBase.
50. Marden, Duane. "Diabolik  (Movieland Park)". Roller Coaster DataBase.
51. Marden, Duane. "Family Coaster  (Happy Valley)". Roller Coaster DataBase.
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56. Marden, Duane. "Vampire  (Kentucky Kingdom)". Roller Coaster DataBase.
57. Marden, Duane. "Boomerang  (Nanhu Amusement Park)". Roller Coaster DataBase.
58. Marden, Duane. "Flashback  (Great Escape)". Roller Coaster DataBase.
59. Marden, Duane. "Carolina Cobra  (Carowinds)". Roller Coaster DataBase.
60. Marden, Duane. "Head Spin  (Geauga Lake)". Roller Coaster DataBase.
61. Marden, Duane. "Frontline Charge  (Fanta Park Glorious Orient)". Roller Coaster DataBase.
62. Marden, Duane. "Frontline Charge  (Fanta Park Glorious Orient)". Roller Coaster DataBase.
63. Marden, Duane. "Generator  (Walibi Rhône-Alpes)". Roller Coaster DataBase.
64. Marden, Duane. "Giant Inverted Boomerang  (Jin Jiang Action Park)". Roller Coaster DataBase.
65. Marden, Duane. "Déjà Vu  (Six Flags Magic Mountain)". Roller Coaster DataBase.
66. MacDonald, Brady (19 August 2011). "Six Flags Magic Mountain to remove Deja Vu coaster". Los Angeles Times. Retrieved 20 August 2011.
67. MacDonald, Brady (1 September 2011). "Six Flags unveils new attractions for every park in 2012". Los Angeles Times. Retrieved 1 September 2011.
68. Marden, Duane. "Good Gravy!  (Holiday World)". Roller Coaster DataBase.
69. Marden, Duane. "High Speed Round Trip  (Bao Son Paradise Park)". Roller Coaster DataBase.
70. Marden, Duane. "Invertigo  (Kings Island)". Roller Coaster DataBase.
71. Marden, Duane. "Jolly Rancher Remix  (Hersheypark)". Roller Coaster DataBase.
72. Marden, Duane. "Light Explorers  (Energylandia)". Roller Coaster DataBase.
73. Marden, Duane. "London Loop  (Global Village)". Roller Coaster DataBase.
74. Marden, Duane. "London Loop  (Global Village)". Roller Coaster DataBase.
75. Marden, Duane. "Pine Tree Rocket  (Oriental Heritage)". Roller Coaster DataBase.
76. Marden, Duane. "Pine Tree Rocket  (Fantawild Land)". Roller Coaster DataBase.
77. Marden, Duane. "Quantum Leap  (Sochi Park)". Roller Coaster DataBase.
78. Marden, Duane. "Ragin' Cajun  (Dixie Landing')". Roller Coaster DataBase.
79. "Family-Boomerang RAIK". Phantasialand. Retrieved 14 September 2016.
80. Marden, Duane. "Raik  (Phantasialand)". Roller Coaster DataBase.
81. Marden, Duane. "Recoil  (Wonderla Amusement Park Bangalore)". Roller Coaster DataBase.
82. Marden, Duane. "Thunderbolt  (Aladdin's Kingdom)". Roller Coaster DataBase.
83. Marden, Duane. "Recoil  (Wonderla Amusement Park Hyderabad)". Roller Coaster DataBase.
84. Marden, Duane. "Zoomerang  (Alabama Adventure & Splash Adventure)". Roller Coaster DataBase.
85. Marden, Duane. "Demon  (Wonderland Sydney Bangalore)". Roller Coaster DataBase.
86. Marden, Duane. "Titan  (World Expo Park)". Roller Coaster DataBase.
87. Marden, Duane. "Colossus  (Habtoorland)". Roller Coaster DataBase.
88. Marden, Duane. "Recoil  (Wonderla Amusement Park Kochi)". Roller Coaster DataBase.
89. Marden, Duane. "Saven  (Fårup Sommerland)". Roller Coaster DataBase.
90. Marden, Duane. "Sea Serpent  (Morey's Piers)". Roller Coaster DataBase.
91. Marden, Duane. "Snow Slope  (Lusail Winter Wonderland)". Roller Coaster DataBase.
92. Marden, Duane. "Space Shuttle  (Enchanted Kingdom)". Roller Coaster DataBase.
93. Marden, Duane. "Cobra  (West Midland Safari Park)". Roller Coaster DataBase.
94. Marden, Duane. "Spartan Race  (Vinwonders)". Roller Coaster DataBase.
95. Marden, Duane. "Flying Dolphin Coaster  (Vinwonders)". Roller Coaster DataBase.
96. Marden, Duane. "Speed of Sound  (Walibi Holland)". Roller Coaster DataBase.
97. Marden, Duane. "Stinger  (Dorney Park & Wildwater Kingdom)". Roller Coaster DataBase.
98. "Exclusive Photos of the Deconstruction of Stinger at Dorney Park". 31 March 2018.
99. Marden, Duane. "Invertigo  (California's Great America)". Roller Coaster DataBase.
100. Marden, Duane. "Stress Express  (Fantawild Dreamland)". Roller Coaster DataBase.
101. Marden, Duane. "Stress Express  (Fantawild Adventure)". Roller Coaster DataBase.
102. Marden, Duane. "Stress Express  (Oriental Heritage)". Roller Coaster DataBase.
103. Marden, Duane. "Stress Express  (Fantawild Dreamland)". Roller Coaster DataBase.
104. Marden, Duane. "Stress Express  (Oriental Heritage)". Roller Coaster DataBase.
105. Marden, Duane. "Stress Express  (Oriental Heritage)". Roller Coaster DataBase.
106. Marden, Duane. "Stress Express  (Fantawild Asian Legend)". Roller Coaster DataBase.
107. Marden, Duane. "Stress Express  (Silk Road Dreamland)". Roller Coaster DataBase.
108. Marden, Duane. "Stunt Fall  (Parque Warner Madrid)". Roller Coaster DataBase.
109. Marden, Duane. "Tidal Wave  (Trimper's Rides)". Roller Coaster DataBase.
110. Marden, Duane. "Triops  (Bagatelle)". Roller Coaster DataBase.
111. Marden, Duane. "Tornado  (Sommerland Syd)". Roller Coaster DataBase.
112. Marden, Duane. "unknown  (Allou Fun Park)". Roller Coaster DataBase.
113. Marden, Duane. "HangOver  (Liseberg)". Roller Coaster DataBase.
114. Marden, Duane. "Turbo Dino  (Zigong Fantawild Dinosaur Kingdom)". Roller Coaster DataBase.
115. Marden, Duane. "Tweestryd  (Wildlands Adventure Zoo Emmen)". Roller Coaster DataBase.
116. Marden, Duane. "Velociraptor  (Paulton's Park)". Roller Coaster DataBase.
117. Marden, Duane. "Volldampf  (Erlebnispark Tripsdrill)". Roller Coaster DataBase.
118. Marden, Duane. "Whirly Roller Coaster  (Floraland Continent Park)". Roller Coaster DataBase.
119. Marden, Duane. "Boomerang  (Qingdao International Beer City)". Roller Coaster DataBase.
120. Marden, Duane. "Wipeout  (Pleasurewood Hills)". Roller Coaster DataBase.
121. Marden, Duane. "Missile  (American Adventure Theme Park)". Roller Coaster DataBase.
122. Marden, Duane. "Coca-Cola Roller  (Glasgow Garden Festival)". Roller Coaster DataBase.
123. Marden, Duane. "Unknown  (Emerald Park)". Roller Coaster DataBase.
124. Marden, Duane. "Zydeco Scream  (Six Flags New Orleans)". Roller Coaster DataBase.
125. Marden, Duane. "Unknown  (Fantawild)". Roller Coaster DataBase.
126. Marden, Duane. "Unknown  (Fantawild)". Roller Coaster DataBase.
127. Marden, Duane. "Unknown  (Fantawild)". Roller Coaster DataBase.
128. Marden, Duane. "Unknown  (Oriental Heritage)". Roller Coaster DataBase.
129. Marden, Duane. "Unknown  (Oriental Heritage)". Roller Coaster DataBase.
130. Marden, Duane. "Unknown  (Fantawild)". Roller Coaster DataBase.
131. Marden, Duane. "Unknown  (Fantawild)". Roller Coaster DataBase.
132. Marden, Duane. "Unknown  (Warner Bros. Movie World)". Roller Coaster DataBase.
133. Marden, Duane. "Déjà Vu  (Six Flags Over Georgia)". Roller Coaster DataBase.
134. Marden, Duane. "Sky Mountain  (Mirabilandia)". Roller Coaster DataBase.
135. Marden, Duane. "Flash: Vertical Velocity  (Six Flags Great Adventure)". Roller Coaster DataBase.

External links

• Listing of Boomerang roller coasters at RCDB
• Listing of Invertigo roller coasters at RCDB
• Listing of Giant Inverted Boomerang roller coasters at RCDB
• Listing of Super Boomerang roller coasters at RCDB
• Listing of Family Boomerang roller coasters at RCDB
• Family Boomerang official website
• Super Boomerang official website