The world of motorsport is abuzz with the unveiling of the IR28 IndyCar’s first completely new racer in over 15 years. This morning, renderings of the upcoming chassis were shared, offering a glimpse into the future of the sport. Set to debut at the first race of the 2028 season the IR28 is poised to replace the current DW12 chassis, named in honor of the late Dan Wheldon.
The IR28 represents a significant leap forward in racing technology. Built by the renowned Italian chassis-maker Dallara the new car will accommodate engines from Honda and Chevrolet with hopes of adding a third manufacturer in the future. The chassis is part of a comprehensive engineering project led by IndyCar, with close collaboration from both engine suppliers to ensure their needs are met.
The Evolution of the IR28 Chassis
The IR28 is not just an upgrade; it’s a complete redesign. Unlike its predecessor, which was retrofitted with the aeroscreen the IR28 has been built from the ground up to integrate this safety feature seamlessly. This holistic approach ensures a more streamlined and cohesive design, enhancing both aesthetics and performance.
One of the most notable improvements is the car’s hybrid system. Replacing the current supercapacitor system, the new battery-hybrid system offers approximately 14 times the battery capacity. This advancement, combined with a 20-pound weight reduction in the hybrid system and a 25-pound lighter transmission contributes to an These changes are expected to significantly enhance the car’s agility and speed on the track.
Enhanced Aerodynamics and Suspension
The IR28’s aerodynamic package has been meticulously designed to minimize dirty air promoting better overtaking opportunities on various track types, from road courses to superspeedways. The new front and rear wings not only improve efficiency but also give the car an aggressive stance. The superspeedway wing configuration, in particular, is designed to provide maximum downforce with minimal drag.
Innovation extends to the suspension setup with the introduction of the Custom AXIS Inertance Control Suspension System. This system offers greater flexibility and modularity, allowing teams to fine-tune their setups for optimal performance. Additionally, a digital display on the side of the car will show the car’s position during races, similar to systems used in other series like IMSA.
Power and Performance
The IR28 will be powered by 2.4-liter twin-turbocharged V6 internal combustion engines capable of producing up to 760 horsepower. Both Chevrolet and Honda have committed to participating under this new engine formula, which promises increased torque, power, and The new hybrid platform, developed in partnership with Helix features a battery-based Energy Storage System (ESS) that delivers significantly more energy storage capacity than the current system.
The ESS, supplied by BOLD Technology is engineered to meet the most stringent motorsport safety standards. The new hybrid system is not only more powerful but also lighter, contributing to the car’s The transmission, provided by Xtrac is also lighter, shedding 25 pounds compared to the current unit.
Safety Innovations
Safety has been a paramount consideration in the design of the IR28. The new chassis features wider internal dimensions to accommodate a greater range of driver heights and body types. Enhanced internal airflow and driver cooling improve comfort and performance, while stronger side-structure design provides increased energy absorption in high-impact situations.
The IR28’s design also includes improved crash dynamics, ensuring stability during nose-up, sliding, or spinning incidents. The aeroscreen, now seamlessly integrated into the car’s design, supports both safety and raceability, giving the IR28 a fighter jet-like look and feel.
As the first prototype of the IR28 undergoes testing this week, the motorsport community eagerly anticipates the debut of this groundbreaking chassis. With its advanced technology and innovative design, the IR28 is set to usher in a new era of racing, promising faster lap times, enhanced wheel-to-wheel action, and unparalleled safety.
