Dallara Chevrolet

2016 Chassis Overview

Construction: Monocoque contains cockpit, fuel cell and front suspension; engine is stressed (integral) member of chassis; rear assembly contains bellhousing, gearbox and rear suspension members

Materials: Carbon fiber, kevlar and other composites
Weight: Approximately 1575 lbs (Road/Street/Short Ovals) and 1545 lbs (Speedways)
Length: 192 inches minimum
Width: 78.5 inches maximum, 77.5 inches minimum (measured outside rim to rim), floor is 79 inches
Height: Approximately 40 inches
Wheelbase: 120 inches
Wheel Size – Front: 15 inches diameter, 10 inches wide
Minimum weight: 14.7 pounds
Tires: Firestone Firehawk
Front diameter: 26 inches maximum, 25 inches minimum @ 35 psi
Rear diameter: 27.5 inches maximum, 26.5 inches minimum @ 35 psi
Gearbox: XTRAC #1011 gearbox. Six forward gears, one reverse gear, Mega-Line Assisted Gear Shift (paddle-shift)
Fuel Cell: Single, rupture-proof cell, 19 U.S. gallons (standard)
Manufacturer: Dallara Automobili, Italy

Engine Overview

Type: 2.2-liter (134.25 cubic inches) V-6, turbocharged (single or twin), Max. bore diameter 95 millimeters
Weight: Minimum weight is 248 pounds.
RPM: 12,000 maximum (INDYCAR-supplied rev limiter)
Power: Estimated 550-700 horsepower depending on variable turbo boost used at track.
Fuel: E85 fuel (blend of 85 percent ethanol and 15 percent gasoline)
Injector: Direct injection
Models: Chevy IndyCar V6
Manufacturer: Chevrolet

Car Overview

1. Front tire
2. Center spine
3. Anti-roll bar adjusters
4. Refueling adapter
5. Headrest structure
6. Oil cooler
7. Fuel vent
8. Roll hoop
9. Air jack fitting
10. Turbo inlet
11. Oil scavenge tower
12. Rear anti-roll bar assembly
13. Rear damper/spring assembly
14. Transmission/gearbox
15. Rear wing
16. Front wing
17. Front brake disc
18. Brake master cylinder
19. Front spring/damper unit
20. Front air jack
21. Engine Control Unit
22. Water radiator
23. Molded seat
24. Impact lights
25. Exhaust system
26. Turbocharger
27. Rear brake disc
28. Rear attenuator
29. Rear tire

FRONT WING: The front wing (16) works in conjunction with the rear wing to create aerodynamic downforce and balance between the front and the rear of the car. There are two different front wing configurations: speedway and short oval/road course. The front wing can be adjusted during a race to improve handling.

REAR WING: The rear wing (15) works in conjunction with the front wing to create aerodynamic downforce and balance between the front and the rear of the car. There are three different rear wing configurations: superspeedway, intermediate tracks and short ovals/road courses.

CHASSIS: The central part of the car, including the driver’s compartment. The chassis is constructed of carbon fiber with an aluminum honeycomb core. As the frame of the car, the chassis houses the center spine (2), anti-roll bar adjusters (3), the refueling adaptor (4), headrest structure (5), fuel vent (7), roll hoop (8), air jack fitting (9), turbo inlet (10), brake master cylinder (18), front spring/damper unit (19), front air jack (20), molded seat (23) and impact lights (24).

SIDE POD: Also included in the chassis is the side pod, the bodywork on the side of the car covering the oil cooler (6), engine control unit (21) and water radiator (22). The side pod and its components aid in engine cooling, car aerodynamics and driver protection in case of a side impact.

FUEL CELL: The fuel cell is made of rubber and is covered with a Kevlar-fitted blanket for extra protection in side impacts. It holds 18.5 gallons of E85.

GEARBOX/BELLHOUSING: An IndyCar Series car features an assisted gear shift system utilizing paddle shifting. Paddles are located on the back of the steering wheel, with the right paddle moving up gears and the left paddle moving down gears. The bellhousing connects the gearbox to the engine. Key components of the gearbox bellhousing include the oil scavenge tower (11), rear anti-roll bar assembly (12), rear damper/spring assembly (13) and transmission (14).

ENGINE: The IndyCar Series utilizes turbocharged, direct, injected V6 engines with approximately 550-700 horsepower for the varied IndyCar Series schedule – from street/road courses to short ovals to superspeedways. The engine houses the exhaust system (25) and the turbocharger (26).

TIRES: Firestone Firehawk racing radials are mounted on 15-inch rims with front tires (1) approximately 11 inches wide and rear tires (29) approximately 15 inches wide. The weight of an IndyCar Series car at is speed is approximately four times the static weight, so the tire sidewalls have to strong enough to handle the stress, yet thin enough to dissipate heat.

FRONT/REAR SUSPENSION: The front and rear suspension attach the wheels to the chassis. It is designed to withstand all the braking and acceleration loads in addition to vertical loads. The suspension includes the front brake disc (17) and rear brake disc (27).