Mini 4WD Wiki
Mini 4WD Wiki

Go Boomerang! The grand prize of this Mini 4WD tournament will be mine!
— Yonkuro Hinomaru in the first chapter of the manga.

The Boomerang Junior (ブーメランJr.) is a Racing Mini 4WD car released by Tamiya in 1986. It is the Mini 4WD version of the Boomerang R/C buggy by the same company.

The alternative '496' colored version of the Boomerang Junior as well as the Jet Boomerang were featured in the manga and anime Dash! Yonkuro as Yonkuro Hinomaru's first Mini 4WD car.

General info

The Boomerang featuring the flat body design, with the driver figurine placed inside the partially-exposed cockpit. The front mono-shock prop as well as the rear CVA damper props were represented on the bodyshell.

It is mainly in white with blue, red and silver trims on it.

The original Boomerang Junior comes with the middle-diameter 4-spoke Hotshot-type wheels paired with high-profile spike tires, while the RS variants were comes with the chromed large-diameter 5-spoke TZ-type wheels paired with Avante-type slick tires. The RS variants were equipped with the 19 mm plastic ringless rollers on the front.

About The Boomerang 1/10 R/C buggy

Released in 1986, The Boomerang is the entry-level hobby-grade R/C buggy, with its chassis being based on the Hotshot and Supershot.

Its ABS monocoque chassis has been drastically improved in several key points: the newly designed 3-point tie-rod steering system, the reduced weight and the ease of maintainence. It is supported by the front upper I and lower H arms suspension system with mono-shock damper and rear dual-H-arms suspension systems with CVA dampers. It retains the same wheels and tires from the Hotshot.

Despite this, it has its own problems, old and new. Since the drivetrain is largely unchanged from the Hotshot, its power loss is still enough to hinders its performance even after replacing the plastic bearings with ball bearings. Its handling is poor compare to the other R/C buggies from other companies as it doesn't have differentials, making cornering very difficult. The bodyshell didn't seal the chassis's internal properly, as such it can't prevents dusts and tiny rocks from getting into the internal, causing interferences to its mechanical speed controller (and the electric speed controller's cooling fan) as well as steering system.

It has been re-released in 2008, with several improvements such as the additional clear cover that prevents dust and tiny rocks from getting into the chassis. The re-release is also compatible with certain hop-up parts made for DF-02 and DF-03 chassis.

In the manga and anime

In Dash! Yonkuro, Kaidanji Sumeragi, a former F1 car designer and a friend to Genkuro Hinomaru, made a special Boomerang Jr. car that has the Carbon-Nylon chassis and Polytetrafluoroethylene gears. He gave it to Genkuro who later give it to his son Yonkuro while he is about to enter the hell rally, telling the young Yonkuro that Mini 4WD cars were not toys.

Right before the race against the thugs who are causing trouble at the sand-made race track, Yonkuro modified it into Jet Boomerang. Unfortunately, the bombs were buried into the race track before the race, and Yonkuro's Boomerang was damaged as the thugs detonate the bombs. Luckily, the chassis is unharmed, which allows him to carry over it to his new car, the Dash-1 Emperor.

Technical info

Length: 127 mm (Normal), 145 mm (RS/RS Black Special)

Width: 81 mm (Normal), 92 mm (RS/RS Black Special)

Height: 52 mm (Normal), 53 mm (RS/RS Black Special)

Chassis: Type-1 Chassis (Normal), VS Chassis (RS/RS Black Special)

Gear Set(s): 11.2:1 and 6.4:1 (Normal), 4.2:1 (RS/RS Black Special)



See also


Yonkuro Hinomaru's Related Machine

External links

R/C buggy that the Mini 4WD car is based on

Mini 4WD cars from Dash! Yonkuro franchise
Dash Warriors Mini 4WD Championship arc Boomerang Jr. · Monster Beetle Jr. · Hotshot Jr. · Falcon Jr. · Super Dragon Jr. · Hornet Jr. · Dash-1 Emperor · Dash-2 Burning Sun · Dash-3 Shooting Star · Dash-4 Cannonball · Dash-5 Dancing Doll · Dash-01 Super Emperor · Dash-0 Horizon · Dash-W1 Wild Saurus · Dash-02 Neo Burning Sun · Dash-001 Great Emperor
Black Mistral arc Horizon Boundless · Liberty Emperor
Shin Dash! Yonkuro Dash-CB1 Geo-Emperor · Dash-CB2 Blazing Sun · Dash-03 Super Shooting Star · Dash-04 Cannonball Wail · Dash-05 Dame the Dancing Doll · Dash-CBW Command Saurus
Hyper Dash! Yonkuro Rise-Emperor · Shooting Proud Star · God Burning Sun · Cannon D Ball · Dancing Divine Doll
Mini 4WD Championship participants Fire Dragon Jr. · The Fox Jr. · Thunder Dragon Jr. · Rising Bird · Bigwig Jr. · Avante Jr. · Thunder Shot Jr. · Clod Buster Jr. · Lunch Box Jr.
U Team and U Team 2 Dash-X1 Proto-Emperor · Crusader · Black Chopper · Black Bomber · Black Fighter · Black Attacker · Proto-Emperor ZX · Proto-Emperor Coretank
Team Momotaro Samurai Crimson Glory · Crimson R · Crimson T · Crimson E · Crimson A
Team Ninja Warriors Terra Scorcher Jr. · Dash-X5 Shadow Emperor
Team Heavy Metal Dash-X2 God Emperor · Dash-X3 Hurricane Emperor · Dash-X4 Devil Emperor
Amazon Horizons Sid Horizon · Buzz Horizon · Gal Horizon · Luke Horizon · Coco Horizon
from Black Mistral arc Aero-Solitude · Manta Ray Jr. · Black Mistral
Dark Dominion Night Seek · Night Seek Trigger · Night Seek Shield · Night Seek Rod · Night Seek Edge · Night Seek Saucer · Night Seek G · Over the Horizon · Dancing Bloom Doll · Beast Emperor · Big Burning Sun · Shooting Billion Star · Cannon Bad Ball
Others Daihatsu Kopen XMZ · Astralster · Abilista · Raikiri · Festa Jaune · Silwolf
Racing Mini 4WD series
Type-1 Hotshot Jr. · Hornet Jr. · The Fox Jr. · Boomerang Jr. · Bigwig Jr. · Falcon Jr. · Super Dragon Jr.* · Thunder Dragon Jr.* · Thunder Shot Jr. · Super Sabre Jr. · Fire Dragon Jr.* · Dash-1 Emperor* · Dash-2 Burning Sun
Type-2 Avante Jr. · Grasshopper II Jr. · Vanquish Jr. · Terra Scorcher Jr.
Type-3 Rising Bird · Dash-3 Shooting Star · Saint Dragon Jr.* · Dash-4 Cannonball* · Dash-5 Dancing Doll* · Winning Bird · Dash-01 Super Emperor* · Nissan Be-1
Type-4 Egress Jr.
Zero Dash-0 Horizon* · Avante 2001 Jr. · Astute Jr. · Manta Ray Jr. · Dash-001 Great Emperor* · Super Astute Jr. · Proto-Emperor ZX · Dyna Storm Jr. ·
FM Crimson Glory · Dash-02 Neo Burning Sun · Aero-Solitude
Type-5 Bear Hawk Jr. · Top-Force Jr. · Terra Conqueror Jr. · Dash-03 Super Shooting Star · Super Avante · Dash-CB1 Geo-Emperor*
Super TZ-X Mad Bull Jr. · Baja King Jr.
VS Dash-X1 Proto-Emperor* · Slash Reaper · Super Sabre Open Top · Top-Force Evolution Open Top · Daihatsu Kopen RMZ and XMZ · Daihatsu Kopen RMZ · Mini 4WD Lupine Racer · Mach-Bullet · Mini 4WD Koala Racer
Super-II Astute Open Top · Terra Conqueror Open Top · Racing Miku 2012 ver. drives Astute Special · Saber drives Super Sabre Special · Mikoto Misaka drives Thunder Shot Special · Daihatsu Kopen XMZ · Mini 4WD Shirokumakko · Mini 4WD Panda Racer · Mini 4WD Kumamon Version · Mini 4WD Merlion Edition - Singapore 50th Anniversary · Mini 4WD Dog Racer · Mini 4WD Hawk Racer · Mini 4WD Owl Racer · Mini 4WD Pig Racer · Mini 4WD Panda Racer 2 · Mini 4WD Cat Racer
Super XX Thunder Shot Open Top
VZ Neo-VQS · Dual Ridge Jr. · Toyota GR Yaris · Honda e · Iron Beak · Ray Spear · Mini 4WD Elephant Racer · Mini 4WD Penguin Racer · Eleglitter
Starter Pack Zenquish Progress · Azente Progress · Neo-VQS Advanced Pack
* denotes Premium version available