News & Multimedia

Dallara DW12 Specifications

Courtesy of Speed.com

With the first race for the new Dallara DW12 package and turbocharged engine formula this weekend, get up to speed with the various technical changes and updated specifications in a SPEED.com exclusive:

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)

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)

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
Rear Upper Element Range: 10° to 46°
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

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)
 

Show More Show Less
Now Viewing
Dallara DW12 Specifications
 
Dallara DW12 Specifications
With the first race for the new Dallara DW12 package and turbocharged engine formula this weekend, get up to speed with the various technical changes and updated specifications in a SPEED.com exclusive:
Read More
Related Media
Justin Wilson
 
Wilson Joins Andretti Autosport For Indianapolis 500 and Angie's List Grand Prix of Indianapolis
Justin Wilson will make his 2015 Verizon IndyCar Series debut in an Andretti Autosport car in the Angie's List Grand Prix of Indianapolis on May 9 and also compete in the 99th Running of the Indianapolis 500 on May 24, the team announced.
Read More
Ryan Hunter-Reay
 
Verizon IndyCar Series Kicks Off This Weekend in St. Petersburg
It’s a dawn of a new era for the Verizon IndyCar Series this weekend as aero kits enter the sport’s lexicon. Years of work by IndyCar engine suppliers Chevrolet and Honda have resulted in new bodywork that not only provides different looks for fans to identify each brand, but has also raised the performance index of the 24 cars on the St. Petersburg grid.
Read More
Tamika Catchings
 
Indiana Fever Star Catchings Joins Contest Winners in Traditional Flag Placing Cermony at IMS
Three-time Olympic gold medalist and Indiana Fever standout basketball player Tamika Catchings and two local radio contest winners participated in the traditional placement of racing flags atop the famous Wing and Wheel logo located above the Indianapolis Motor Speedway’s Gate 1.
Read More
Indianapolis Monopoly Piece
 
Indianapolis Lands Spot in New 'Monopoly Here & Now' Game
On Thursday, March 19 – World Monopoly Day – Hasbro, Inc., named the cities to be featured in its newest Monopoly Here & Now U.S. Edition game. Cities were selected via a nationwide online vote on BuzzFeed.
Read More
IMS Golf Course
 
Golfers Can 'Pay The Temp' as Brickyard Crossing Opens March 20
The highly acclaimed Brickyard Crossing Golf Course will open for the 2015 season at 10 a.m. on Friday, March 20, and players will receive a fantastic greens fee value through Tuesday, March 31, with the “Pay the Temperature” promotion.
Read More
Items 1 - 5 of 899
Reserve one of our hospitality suites for your next event!
To start planning your event at the Indianapolis Motor Speedway please fill out our Information Request Form or contact Laura Wyamn at (317) 492-8557 or email at lwyman@brickyard.com.
Latest Tweets
.@IndyCar qualifying starts in about 5 minutes! Who's your pick for the @Verizon P1 Award? Live video here: http://t.co/OVG0FLvRZn #IndyCar
about 4 hours ago