Dallara DW12

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Dallara DW12 with the IR-18 Aerokit in oval configuration

The Dallara DW12 is a formula racing car developed and produced by the Italian manufacturer Dallara for the IndyCar Series . Officially referred to as the IR12, it was developed for the 2012 IndyCar Series season to replace the outdated Dallara IR5 chassis and will be used for the next nine seasons until its successor in 2021, due to the series’s philosophy that has existed since 2012 nine years to improve the chassis is introduced. The DW12 was introduced after the 2011 IZOD IndyCar World Championship . The chassis is named after Dan Wheldon , who perished on October 16, 2011 at Las Vegas Motor Speedway .

Beginning in 2012, the series switched to a standard chassis, which is supplied by Dallara. Having only one supplier for the chassis was also introduced as a method of controlling costs and IndyCar has negotiated a fixed price of $ 349,000 per chassis. The new chassis specification has also improved safety, the most noticeable feature being the partial fairing of the rear wheels.

The chassis strives to support a large number of aerodynamic packages, but their introduction was delayed until 2015, since then Honda and Chevrolet have provided the alternatives to the Dallara package.

On October 18th, the Italian manufacturer Dallara confirmed that the 2012 season car will be named after the late IndyCar driver Dan Wheldon (DW12), in honor of his test work with the car in Las Vegas two days before his death, where the new Bumper or "Nerf Bar" was part of the chassis, which was designed to prevent many similar single-seater accidents like the one that led to Wheldon's death. The nomenclature is similar to that of the old Formula 1 team Ligier , whose cars were always named JSxx, in memory of the French Formula 1 driver Jo Schlesser , who died at the French Grand Prix in 1968 .

The Dallara cars have won twelve of the sixteen races of the Indianapolis 500 in which they have participated. In 2013 Dallara clinched the 200th IndyCar victory in Barber .

The ICONIC project

Dallara DW12 (2012-2014)

In the 2012 season, the new ICONIC plan (Innovative, Competitive, Open-wheel, New, Industry-relevant, Cost-effective; in German: Innovative, Competitive, One-Seater, New, Industry-Relevant, Cost-Effective) was introduced by the Indy Racing League, the biggest change in sport in recent history. The car that was used in 2011, a 2003/2007 model of the Dallara IR-05 and naturally aspirated V8 engines (required since 1997) have been permanently withdrawn. The ICONIC Committee was composed of experts and executives from racing and technical fields: Randy Bernard (INDYCAR CEO), William R. Looney III (military), Brian Barnhart (INDYCAR), Gil de Ferran (retired Indy 500 Champion), Tony Purnell ( Motorsport), Eddie Gossage (Texas Motor Speedway), Neil Ressler, Tony Cotman (NZR Track Consulting) and Rick Long (Motorsport). IndyCar accepted suggestions from BAT Engineering, Dallara, DeltaWing , Lola and Swift for the chassis design. On July 14, 2010, the organizers' final decision to accept Dallara's proposal was announced.

The new chassis

Under the new ICONIC regulations, all teams will compete with a core roller chassis called "IndyCar Safety Cell", developed by the Italian designer Dallara . The teams will then equip the chassis with their own body parts, which are known as "Aero Kits". These consist of front and rear wings, side pods and engine covers. Each manufacturer is free to develop aero kits, with all packages being made available for each team and at a maximum price. Tony Purnell , who is a member of the ICONIC committee, issued an open invitation for automakers and companies like Lockheed Martin and GE to develop aero kits.

The IndyCar Safety Cell will have a price cap of $ 349,000 and will be manufactured at the new Dallara facility in Speedway, Indiana . Aero kits have a price cap of $ 70,000. The teams have the option to purchase a complete Dallara safety cell / aerodynamic package at a discounted price.

On May 10, 2011, Dallara unveiled the first concept cars and equipped one with the oval and one with the street course aerodynamics package.

On April 30, 2011, the IndyCar owners voted 15–0 against the introduction of multiple aero kits for the 2012 season, citing cost reasons. The owners expressed their desire to introduce the new 2012 chassis / engines, but all participants used the Dallara aerodynamics package for the 2012 season and the introduction of the multiple aero kits was delayed until 2013. On August 14, 2011, IndyCar confirmed, that the introduction of multiple aero kits will be delayed until 2013, citing "economic reasons", only to be postponed again in 2013. Chevrolet and Lotus had already expressed their intentions to build the aero kits.

2011 Indianapolis 500 winner Dan Wheldon conducted the first official tests of the Dallara chassis in Mid-Ohio in August 2011. After Wheldon's death in the last race of the season in Las Vegas , Dallara announced that the 2012 chassis will be named "DW12" in his honor.

debut

The first official test of the Dallara IR12 chassis was conducted by Dan Wheldon in Mid-Ohio on August 8, 2011. In the first phase of the test, which Wheldon was involved in, the plan was to test three street courses and three oval courses over approximately twelve days. The second test was held in Barber on August 18 and the third was conducted at the Indianapolis street circuit on September 1. The oval course tests were held in Iowa and Indianapolis in September .

Honda ( Scott Dixon ) and Chevrolet ( Will Power ) began phase two of testing in Mid-Ohio in early October. A scheduled test in Las Vegas was canceled after Dan Wheldon's fatal accident at the venue, resulting in Dallara renaming the chassis, a custom adopted by Ligier, who called their racing cars "JS", which stands for Jo Schlesser . Testing continued in late October and continued through February at a few venues including Sebring , Fontana , Homestead , Phoenix , and Sonoma . Lotus was the first team to leave Palm Beach on January 12 , and testing of individual other teams began on January 16.

A first, open, official test in which the whole field was involved took place on March 5th and 6th and March 8th and 9th, 2012 at the Sebring International Raceway .

The Dallara DW12 made its racing debut at the 2012 Honda Grand Prix of St. Petersburg on March 25, 2012. Will Power from Team Penske secured the opening pole position and Helio Castroneves won the first race with the DW12.

Open oval course tests were also held on April 4, 2012 at Indianapolis Motor Speedway and May 7, 2012 at Texas Motor Speedway .

The car's Indianapolis debut came in the 2012 Indianapolis 500 . In the first three 500s, the car has seen 136 lead changes, including a track record of 68 lead changes in the 2013 Indianapolis 500 .

Aero Kit (2015-2017)

The 2015 Chevrolet Aerokit
The 2015 Honda Aerokit

Honda and Chevrolet presented aero kits designed by them. These should be introduced in 2012, but this will be delayed until 2015. Chevrolet was mostly faster than Honda and also won the manufacturers' championship.

The first official tests of Chevrolet's Aero Kit were carried out by Will Power on October 17, 2014 at the Circuit of the Americas . The Dallara DW12 Chevrolet Aero Kit made its test debut at NOLA Motorsports Park on March 14, 2015 as part of the pre-season tests. The racing debut of the Dallara DW12 Chevrolet Aero Kit took place at the Firestone Grand Prix of St. Petersburg on March 29, 2015. Will Power from Team Penske secured the opening pole position and Juan Pablo Montoya won the first race with the DW12 Chevrolet Aero Kit.

Aerokit IR-18 (since 2018)

A new uniform aerokit was introduced for the 2018 season . The appearance was based on the CART vehicles from the 90s. In order to generate less dirty air , the underbody is responsible for 66 percent of the downforce. With the previous Aerokit it was 19 percent. Oil and water coolers are attached further forward and are now part of the side impact protection.

Web links

Commons : Dallara DW12  - collection of pictures, videos and audio files

Individual evidence

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  34. ↑ IndyCar oval testing continues with new suspension to fix evil handling. AutoRacing1, February 19, 2012, accessed May 9, 2017 .
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  37. ↑ Heiko Stritzke: Dixon criticizes Aero Kits: They don't need them. Motorsport-Total.com, January 4, 2016, accessed May 9, 2017 .
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