Dallara DW12 (IndyCar)

A mitad de septiembre acabó la temporada en la IndyCar y con ello la primera temporada del nuevo monoplaza diseñado por Dallara, el DW12. Se trata de la cuarta generación de monoplazas que el fabricante italiano ha desarrollado para el campeonato americano. El nombre de este coche rinde homenaje al piloto Dan Wheldon, fallecido en la temporada 2011 debido a un fatídico accidente en el óvalo de Las Vegas.

 

A continuación os dejo con las especificaciones técnicas de este Dallara: 

Chassis

• Name: Dallara DW12 (Original designation: Dallara IR12)
• Length: 5,012.3 mm (197 in)
• Width: 2,011 mm (79 in)
• Height: 1,127.9 mm (44 in)
• Track Width: 1,940 mm (76 in) maximum
• Wheelbase: Between 2,997.2 mm (118 in) and 3,073.4 mm (121 in), depending on use of original or weight distribution correction a-arms
• Minimum Weight: 1,565 lb (710 kg) (Originally stated weight: 1380. 2011 weight: 1565)
• Weight Distribution: 43% front/57% rear (approx.)
• Fuel Capacity: 18.5 US gal (70 L) (Original amount: 19 gallons. 2011 fuel capacity: 22 gallons)

Engines

• Type: Single- or Twin-Turbocharged, four-valves-per-cylinder (2011: Naturally aspirated)
• Designations: Chevy IndyCar V6 (Chevrolet), HI12R (Honda), DC00 (Lotus)
• Displacement: 2.2 L (2,200 cc) (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 kg/17.6 to 19.2 lbs (single, depending on the turbine housing used), 4.91 to 5.1 kg/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 kg (248 lb) (2011: 124.7 kg/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: Sunoco 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