The Car – Dallara DW12 Specifications

rhr-thecar-2016

Chassis
  • Name: Dallara DW12 (Original designation: Dallara IR12. 2011: IR07)
  • Length: 5012.3 mm/197.3 in
  • Width: 2011 mm/79.2 in
  • Height: 1127.9 mm/44.4 in
  • Track Width: 1940 mm/76.34 in maximum
  • Wheelbase: Between 2997.2 mm and 3073.4 mm/118 and 121 in, depending on use of original or weight distribution correction a-arms
  • Minimum Weight: 1565 (Originally stated weight: 1380. 2011 weight: 1565)
  • Weight Distribution: 43% front/57% rear (approx.)
  • Fuel Capacity: 18.5 gallons (Original amount: 19 gallons. 2011 fuel capacity: 22 gallons)
Clutch
  • Type: Three-plate carbon with steel housing
  • Vendor: AP Racing
  • Model Number: CP8153-DE03
Transmission
  • Type: Sequential
  • Manufacturer: Xtrac
  • Model Number: 1011
  • Number of Gears: Six
  • Shifting Actuation: Paddle
  • Shifting Actuation System Vendor: MegaLine
Suspension
  • Type (Front): Double A-Arm, pushrod, with third spring and anti-roll bar
  • Type: (Rear): Double A-Arm, pushrod, with third spring and anti-roll bar
  • Damper Vendors: Unrestricted, use of inerters within the damper housing permitted
Aerodynamics
  • Type: Ground effects underbody used in conjunction with front and rear wings
  • Front Wing Assembly: Fixed main element with second and third adjustable elements per side
  • Front Second (middle) Element Range: -10° to +32°
  • Front Third (top) Element Range: Three pre-set positions of 6.5°, 9.0° or 11.5°
  • Rear Wing Assembly: Fixed main element with single adjustable upper element
  • Wickers: 1 in maximum height
  • Downforce: 4600 pounds at 200 mph (approx.)
  • Drag: 1500 pounds at 200 mph (approx.)
  • Strakes: One per tunnel
Brakes
  • Type: Carbon discs and pads with monobloc aluminum calipers
  • Supplier: Brembo
  • Front/Rear Calipers: Six-piston design, with 28/30/36mm pistons
  • Caliper Weight: 2.08 kg/4.58 lbs each
  • Front/Rear Brake Disc Dimensions: 328 mm dia./12.9 in dia., 30 mm thickness/1.18 in thickness (minimum thickness: 19 mm/.75 in)
  • Carbon Brake Pad Thickness: 24 mm/.94 in
  • Carbon Pad Weight: 270 g/.59 lbs each
  • Maximum Disc Operating Temperature: 900 C/1652 F
Electronics
  • ECU Vendor: McLaren
  • ECU Model Number: 400i
  • Dash, Data Logging System and Chassis Wiring Loom Vendor: Cosworth Electronics
  • Engine Loom: Vendor chosen by each manufacturer
  • Drive-by-Wire System: Vendor chosen by each manufacturer
  • Hand Clutch Vendor: AP Racing
Engines
  • Type: Single- or Twin-Turbocharged, four-cycle, four-valves-per-cylinder (2011: Naturally aspirated)
  • Designations: Chevy IndyCar V6 (Chevrolet), HI12R (Honda), DC00 (Lotus)
  • Displacement: 2200 cubic cm/134.2 cubic in (2011: 3500 cubic cm/213.6 cubic in)
  • Cylinders: maximum of six (2011: eight)
  • Camshafts: Maximum of four
  • Crankshaft: One-piece, no lower than 100 mm above the bottom of the chassis
  • Valves: Two inlet, two exhaust (mechanically-operated, only. Variable valve timing not permitted)
  • RPM: 12,000 maximum
  • V Angle: 60° minimum, 90° maximum
  • Bore: 95 mm dia. maximum
  • Stroke: Unsupplied
  • Compression ratio: Unsupplied
  • Turbocharger Vendor: BorgWarner
  • Turbocharger Model Numbers: EFR9180 (single), EFR6758 (twin)
  • Turbocharger Weights: 8 to 8.71 kgs/17.6 to 19.2 lbs (single, depending on the turbine housing used), 4.91 to 5.1 kgs/10.8 to 11.2 lbs (twin, depending on the turbine housing used)
  • Turbocharger Boost Level: 22.47 psi
  • Wastegate: Maximum of two, electronic or pneumatic controlled, vendor chosen by each manufacturer
  • Ignition: Coil-based, vendor chosen by each manufacturer
  • Exhausts: As built and homologated by each manufacturer
  • Fuel injectors: Maximum of two per cylinder, vendor chosen by each manufacturer (Direct injection permitted)
  • Spark plugs: One per cylinder, vendor chosen by each manufacturer
  • Weight: 112.5 kgs/248 lbs (2011: 124.7 kgs/274 lbs)
  • Length: 460 mm/18.1 in
  • Banned Engine Materials: Alloys containing more than 3 percent/weight beryllium, iridium or rhenium, metal matrix composites, magnesium-based alloys, inter-metallic materials
  • Horsepower: 550 to 700 (quoted)
  • Torque: 300 lb-ft (approx.)
  • Push-to-Pass: Not permitted. Future use of 100 hp (road/street course) and 50 hp (oval) boosts possible
  • Fuel pump: Supplied by Dallara
  • Fuel pressure: Maximum 300 bar
  • Fuel: E85 Ethanol
  • Fuel Mileage: 3 mpg approx. (2011 mpg: 2.5)
Wheels
  • Type: Single lug
  • Vendors: BBS, OZ, Avus
  • Front Dimensions: 10 in wide x 15 in diameter
  • Rear Dimensions: 14 in wide x 15 in diameter
  • Wheel Nut Torque: 430 lbs
Tires
  • Type: Slick
  • Supplier: Firestone
  • Front Tire Dimensions: 10.0/25.8R15 (Road and street course)
  • Front Tire Weight: 18 lbs
  • Rear Dimensions: 14.5/28.0R15 (Road and street course)
  • Rear Tire weight: 23 lbs
  • Tire Allotment: 9 sets per weekend, 5 sets primaries, 3 sets alternates, 1 set used primary (2011: 9 sets per weekend, 6 new primary, 3 sets alternate)

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