RS4 Sport 3
Featuring the Amazing and Thrilling Hoonicorn RTR!
The full-size Hoonicorn RTR is the amazing car featured in Ken Block''s Gymkhana SEVEN video that sent the motorsport fans into a frenzy - and now YOU can have a 1/10th scale version to drive yourself! Replicating the chopped, slammed and massaged look of the real 1965 Ford Mustang the Hoonicorn RTR is based on, the official HPI Racing replica version features the same gigantic supercharger air scoop, same paint scheme and even the same wheels as the real thing! With a high-traction full-time shaft 4WD providing the go power, this electric-powered version will let you pull off the same wild action as Ken Block himself - in 1/10th the size!
There will only ever be one Hoonicorn RTR - but now YOU could be driving the official scale radio-control replica!
The full-size Hoonicorn RTR is a totally custom, all-out drift machine that was designed by Formula Drift champion Vaughn Gittin Jr.''s RTR design studio and built by ASD Motorsports over 2 years to exacting specifications. It''s fitted with a monstrous 410 cubic inch V8 putting out nearly 850 horsepower at a screaming 9000RPM. The engine is mated to a 6-speed Dakar Rally-spec transmission and 4WD drivetrain, with a completely custom adjustable suspension, and 3-piece fifteen52 wheels wrapped with super-wide 18-inch tires made in a custom compound just for Ken Block himself. You can read about the inspiration and design of the one-of-a-kind Hoonicorn RTR in this Speedhunters special article by Vaughn Gittin Jr!
fifteen52 R43 Replica 3 Piece Wheels
Custom-forged and machined by the custom wheel experts at fifteen52, the amazing 3-piece R43 wheels are replicated in exacting 1/10th scale directly from the original CAD files, so each and every Hoonicorn RTR replica has the perfect look and street stance. The real 18" x 10.5" wheels are made from machined forged 6061 aluminum centers and forged stepped & polished lips, while the replica is molded in high-impact nylon in a custom gold color.
Replica Hoonicorn Tires
295/30/18 - magic numbers that give the technical side of Ken Block''s full-size hoops that are fitted to all four corners of the Hoonicorn RTR. But numbers can''t tell the whole story - especially when these tires are made in a custom compound especially for Ken Block himself! The replica tires look exactly like the real thing: extra-wide, semi-slick and super-cool! The scale tires are molded in a durable, long-wearing rubber compound that gives enough grip for awesome acceleration!
Official Replica of the Amazing, Custom Hoonicorn RTR
Taking the full-size Hoonicorn RTR with its handmade custom body and making it 1/10th scale was a major challenge for the HPI design team, but after months of hard work with scale drawings and hundreds of pictures of the real car, we''re proud to call the 1/10th scale Hoonicorn RTR one of HPI''s finest achievements. The replica wheels were even made with the help of the original fifteen52 CAD files to replicate their Ken Block special R43 wheels to complete the Hoonicorn''s look, and each wheel is wrapped in a scale replica extra-wide semi-slick rubber tires.
Underneath all this detail and awesomeness is the RS4 Sport 3 chassis, the latest scale touring car chassis from HPI Racing! The HPI RS4 Sport 3 chassis features full-time 4WD, a completely sealed and highly efficient shaft drivetrain, coilover shock absorbers plus waterproof electronics. The fully contained drivetrain means there are no exposed gears, belts or drivetrain parts to get stuck with rocks or dirt. The car is completely assembled and fitted with the 1965 Ford Mustang Hoonicorn RTR body and fifteen52 wheels right out of the box, so all you have to do is PLUG IN AND DRIVE!
One-Piece Molded Chassis
The main chassis is formed from a single piece of reinforced plastic and features the drivetrain tunnel molded right down the middle, just like a real car. It''s a step beyond any plastic tub chassis car available today.
Low Profile Layout Design
One of the ways we gave the RS4 Sport 3 Drift the best possible handling was to make sure all the components fit as low as possible in the chassis. This gives the car an amazingly low center of gravity for optimum cornering capabilities.
2S LiPo Capable
The RS4 Sport 3 Drift features a versatile electronic speed controller that can be used with modern lithium-polymer (LiPo) or nickel-metal hydride (NiMH) batteries. Please note a LiPo adapter plug is not included, your model shop will be able to provide one.
Fits a Wide Variety of Batteries
The RS4 Sport 3 Drift chassis can fit lithium-polymer (LiPo) and nickel-metal hydride (NiMH) packs of various sizes, including the extra-long 7-cell NiMH packs. Whatever your power requirements, it can hold it all! A thick hook-and-loop strap holds the pack securely in place, and a simple battery block screws into place to allow you to adjust the weight distribution forward or backward for extra steering or acceleration.
Full-Time Four-Wheel Drive
The RS4 Sport 3 Drift features full-time four-wheel drive to give you the most control and precision on the road or track. All four wheels are driven by heavy duty gear differentials at the front and rear, just like a real car. The extra traction gives you increased acceleration and cornering control for maximum confidence and fun.
Sealed Shaft Drivetrain
The drivetrain of all the RS4 Sport 3 Drift models features the motor mounted longitudinally in the molded chassis, next to the long driveshaft that goes down the center of the car. The entire drivetrain, including the central driveshaft and gear diffs, is completely sealed to prevent dirt, rocks and debris from damaging or binding the drivetrain. The driveshaft, diffs and axles spin on ball bearings to maximize drivetrain efficiency.
The central driveshaft that connects the front and rear differentials is easily accessed from underneath the chassis. This allows the drivetrain to be completely sealed to protect it from rocks and debris no matter where you may want to drive your car.
Easy Access Differentials
Getting to the differentials for quick adjustments is a matter of removing just 4 screws - this allows you to pop out the diff and change the grease, check the gears or just give it a general service.
4-Gear Metal Diffs
Bevel gear differentials at each end of the car transfer power from the driveshaft to the dogbones and axles that drive each wheel. The all-metal construction allows the drivetrain to withstand powerful brushless motors for easy upgrading in the future. Rubber-sealed ball bearings support the differentials and each diff can be tuned independently by changing the diff grease.
Double-Wishbone Fully Adjustable Suspension
The suspension of the RS4 Sport 3 Drift uses the race-proven double-wishbone suspension design, similar to a full-scale modern race car. You''ll be able to control the anti-squat and anti-dive of the front and rear arms using the standard pivot blocks, and the option parts allow you to adjust the sweep and toe angles. You''ll also be able to easily change the roll center front and rear with the racing-style vertical ballstud mounting on both the inner and outer camber link mounts. Multiple shock mounting positions provide a full range of shock suspension angle adjustment to suit different road conditions.
Oil-Filled Threaded Shocks
The RS4 Sport 3 Drift is fitted with a set composite coilover-style oil-filled shocks, just like what you''d see on a real race car! The fully adjustable shocks are fully tunable to provide the optimum chassis performance on a wide variety of road surfaces. The ride height is quickly adjustable by using the threaded shock collars. Further tuning adjustments are also possible by changing the springs and shock oil weight.
Tough Front End Suspension
The RS4 Sport 3 Drift front end uses the strong C-hub style suspension seen on the latest RC touring cars, with a vertical ball stud camber mount that lets you change the front end roll center - which is a critical racing adjustment that allows the RS4 Sport 3 Drift to be a step above other sport-level RC touring cars. The suspension arm also features multiple shock mounting holes for easy shock angle adjustment.
Tunable Rear Suspension
The rear hub is fitted with a vertical ball stud style adjustment that allows easy adjustment of the rear roll center. Moving the ball stud up or down with the optional spacers changes the traction characteristics of the rear end as the car goes through the turns. The suspension arm also features 3 different shock mounting holes for easy shock angle adjustment.
Double Bellcrank Steering
The performance tested adjustable double bell crank system provides optimum steering precision at all speeds. A metal drag link plate connects the cranks for extra durability, the additional drag link mounting positions also allows for Ackermann angle adjustments.
Rugged Spring-Loaded Servo Saver
Fitted to the HPI SS20WR water-resistant servo is an adjustable multipiece servo saver, which protects the servo from crash damage. In the event of a crash or collision, the front wheels usually take a big portion of the blow and transmits the impact directly to the steering servo. The strong spring-loaded cam action of the servo saver is designed to absorb this force and protect the servo from the impact!
Aluminum Motor Mount
The cast aluminum cam-style motor mount holds the motor in place for a secure pinion/spur connection. Two screws hold the cam firmly in position on the mount, and cooling fins on the lateral support aid heat dissipation to keep the motor running as efficiently as possible.
Rear End Chassis Diffuser
The built in rear end chassis diffuser element smooths out the air flow underneath the chassis for maximum aero efficiency.
Rubber-Sealed Ball Bearings
The RS4 Sport 3 is fully fitted with a set of rubber-sealed ball bearings for maximum efficiency. The rubber seals keeps the dust away from the internals while the smooth precision bearings provides for optimum power delivery from the power source out into the driveline.
Rugged Front Bumper
To protect the front suspension, chassis and body from impacts big and small, an extra thick foam bumper is securely fastened to the front of the RS4 Sport 3.
Customize Your Look
A huge variety of option bodies, wheels and tires from HPI lets you fully customize the style of your RS4 Sport 3 to suit your style.
Adjustable Height Body Mounts
The adjustable height body mounts let you fit any 1/10th scale touring car body from HPI Racing on to the RS4 Sport 3 chassis. All you need to do is adjust the front and rear body mounts to allow the wheels and chassis elements to fit properly underneath the body. Body pins hold the mounts in place, and the multiple mounting hole positions allow you to fine-tune the exact body fitment.
You can fit any 1/10th scale touring car body from HPI Racing onto the RS4 Sport 3, from hot hatches to supercars, pick-up trucks to supertouring racers. All you need to do is adjust the body mounts front and rear to allow the wheels to fit underneath the body properly. A simple system using body pins hold the mounts in place, and you can fine-tune the fit to get the exact ride height you want.
Comprehensive Instruction Manual
All HPI Racing kits include a detailed multi-language instruction manual. Exploded diagrams and extensive information about your RS4 Sport 3 ensures that you have the knowhow when it comes to maintaining and upgrading your kit. You can also download a digital version of the manual to your personal electronic device and keep it with you for easy reference on the go.