The new Audi RS 3 LMS for TCR in detail

The second generation of the model developed by Audi Sport is full of new features and improvements.


Audi Sport continues with its model offensive. The second generation of Audi RS 3 LMS follow in the footsteps of one of the brand's most successful racing cars. The new vehicle, digitally presented at Neuburg an der Donau, is ready for racing TCR around the world, incorporating important improvements in different areas.

"With this car we underline the importance of motorsport for our production models, presenting a vehicle still camouflaged, before the production version hit the market", he claimed Julius Seebach, Director of Audi Sport GmbH and responsible for Audi Motorsport. “The Audi RS 3 LMS represents a clear commitment to our customer racing program and is a significant achievement for us. We want to continue reaping successes, as we did with the first generation ”.

Audi RS 3 LMS (2021)Never have so many units of a race car been produced for the TCR as in the first generation of the RS 3 LMS, of which a total of 183 vehicles. A compact competition sports car that is not only a benchmark on a commercial level, it is also on a sports level: In just four years, the RS 3 LMS has achieved 764 podiums in 1.051 races celebrated around the world, with 279 wins. In addition, it has added 16 drivers' titles and 39 championships in other categories, as well as the award TCR Model of the Year in 2018.

"The development process of the new RS 3 LMS has been customer-centric"Said Chris Reinke, Director of the Audi Sport customer racing department. "Both in terms of configuration options and safety or ergonomics, we want to offer the teams a vehicle with even more racing car character than before."

Audi RS 3 LMS (2021)The second generation of the Audi RS 3 LMS incorporates novelties in all areas, to fulfill two objectives: to offer an even more competitive car and to optimize the benefits for the customer. Despite this, the model remains affordable in terms of purchase and maintenance, offers an even higher level of safety and provides driving pleasure with its 340 hp of power.

WITH MORE RACING CAR CHARACTER

Visually, the second generation Audi RS 3 LMS already differs significantly from its predecessor. In compliance with TCR regulations it is 1,95 meters wide, but the body extensions have been integrated into the contour of the vehicle in a more harmonious and aerodynamic way than before.

El front spoiler incorporates new air intakes that are part of a significantly improved cooling system for the engine and brakes. The rear spoiler, which is now suspended from the rear, completes the optimized aerodynamics. For the first time, engineers have performed the design of the aerodynamics by computer throughout the process, using computational fluid dynamics (CFD), without resorting to the wind tunnel.

Audi RS 3 LMS (2021)The body is manufactured in Ingolstadt and the two-liter turbo engine comes from the plant Győr (Hungary). Like its predecessor, the car is assembled at the plant Martorell (Spain), where the Group continues to build its TCR racing cars. Numerous solutions, for example for the chassis area, facilitate the rapid adaptation of the vehicle to the demands of the hectic day-to-day racing. And once again, Audi sets the standard when it comes to safety.

NEW GENERATION ENGINE

The new Audi RS 3 LMS uses the fourth generation of the two-liter four-cylinder engine, called EA888, which replaces the previous series. The engine block and cylinder head, crankshaft, timing, intake manifold, fuel injection system and the new turbocharger remain standard components; only the air filter intake and the exhaust system are different.

Audi RS 3 LMS (2021)Adopting a mass-produced propellant has proven to be a successful solution in TCR racing. The engine management system is also standard; supplies it Magneti Marelli, as specified in the regulations, and requires a lot of development work, as the engine maps are programmed for specific manufacturers and are stored by the race promoters.

Together with standard hardware, this ensures transparency and equal opportunity for all manufacturers. Audi has also optimized cooling: two radiators, positioned horizontally one above the other and anchored in silent blocks, are much less sensitive to vertical impacts, such as those that can occur on track exits.

OPTIMIZED TRANSMISSION

The Audi Sport customer racing department has completely revamped the transmission. The new bi-disc racing clutch weighs 800 grams less than in the previous model, thus reducing the rotational masses and inertia. The new six-speed transmission with pneumatic drive, signed by Hewland, it is particularly robust and can be operated by paddles on the steering wheel. Mechanics have the ability to adjust the effect of the new self-locking multi-disc differential, which has twelve friction surfaces, easily and quickly from the outside. Stronger driveshafts contribute to higher mileage and thus a better balance of costs.

REFERENCE ON SAFETY MATTERS

No other TCR passenger car offers as many safety components as those found in the Audi RS 3 LMS as standard. The roll cage is made of steel tubes totaling around 25,8 meters. Inside the cabin, a six-point seat belt acts as a restraint system for the driver. The seat Audi Sport ProtectionUnique in the TCR category, robustly built and with special upholstery, it offers maximum safety in the event of an accident. For greater protection of the rider in the event of a side impact, the seat has been moved slightly towards the center of the vehicle.

Audi RS 3 LMS (2021)As an option, safety nets that wrap around the seat and provide additional protection to the rider are also available. The standard roof hatch makes it easy to remove the driver in the event of an accident. It allows the helmet to be gently pulled up and, if necessary, a safety corset (“Kendrick Extrication Device”) to be inserted vertically to stabilize the spine of the occupant. For the first time, the rear window of all Audi RS 3 LMS is made of polycarbonate. This material is extremely resistant to impacts and contributes to the reduction of the total weight of the vehicle. Only a foreign object can pass through this moon with difficulty, for example, in the event of an accident.

El fuel tank Safety complies with FIA FT3 regulations and has a capacity of 100 liters. A fire extinguishing system completes the safety equipment.

IMPROVED DRIVING STATION ERGONOMICS

El cockpit is even more driver-oriented and, thanks to this, its control is easier. The steering wheel features a TCR category-specific control panel. In the center console there are twelve ergonomically optimized functions logically grouped on a keyboard. Through it you can start the vehicle and adjust different lighting functions, as well as the interior fan or the optional windshield heater. The brake distribution and fire suppression system are also within easy reach, under the center console, and are easily identifiable.

El new wiring system It has been developed specifically for competition and includes six decentralized fuse boxes, which reduce the weight and complexity of the cables, and offer redundant systems. This means that any electrical failure that might occur in the individual subsystems would have less impact on the network. The pedals can be mechanically adjusted by loosening a connecting screw, allowing them to adapt to the rider's height in a matter of minutes.

ADAPTABLE CHASSIS AND POWERFUL, DURABLE BRAKES

Audi Sport's customer racing department is breaking new ground when it comes to chassis setup and tuning. Design McPherson on the front axle enables kinematic changes to be made faster than ever. Whereas the previous clamping system required a chassis measurement to make changes, the spacers can now be inserted into the control arm and the tie rod in just a few minutes.

Audi RS 3 LMS (2021)In four different dimensions, from 1,2 to 10 millimeters on the swing arm, they allow you to adjust the camber on the front axle in a variable way between 2 and 7 degrees. This makes it possible for the vehicle to continue racing without the need to align the wheels, an unbeatable advantage, for example when changing settings during qualifying.

The Audi RS 3 LMS also features connecting rods as standard on the four-link rear axle, which help improve cornering agility. Other variables of the suspension kinematics, such as body sag or lift, roll center height, trail, or distance from the subframe to the body when height is altered, offer all the possible options a equipment needed for the adjustment and fine-tuning of the settings. For the first time, the stabilizer bars feature a quick coupling system that allows for quick replacement, giving engineers more freedom. Total, there are nine adjustment possibilities for the front axle and six for the rear axle. Different springs and shock absorbers, also adjustable, complete the chassis configuration options. The brakes, whose dimensions are limited by the regulation, operate in a more favorable thermal window. Ventilation of the discs is added for the first time ventilation also for the calipers, which have six pistons on the front axle.

With all these innovations, the Audi RS 3 LMS offers more racing car sensations than ever.

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Automundo

Automundo is the blog about news from the automotive industry, motorsport and the culture of the region. Director: Diego Durruty.

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