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iRacing Dallara DW12 Indycar
With the 98th running of the Indianapolis 500 closing in, iRacing announced that the new Dallara DW12 IndyCar will be released in time for this big race. This Monday to be exact. To get all iRacing members exited, the iRacing staff posted a preview Render of the premier American Single seater.
The Dallara DW12 is developed and produced by Italian manufacturer Dallara for use in the 2012 IndyCar Series season, and debuted at the 2012 Honda Grand Prix of St. Petersburg. The older Dallara IR-05 chassis was in urgent need of replacement.
The chassis was named after British Indycar 2005 Champion, Dan Wheldon, who was sadly killed at Las Vegas Motor Speedway on October 16, 2011. Dan was also the original test driver of the newly build Dallara DW12 chassis.
| Official Webpage – www.iRacing.com |
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Dallara DW12 Indycar Specifications:
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
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
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)
- 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
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)
