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Annoncé comme ‘The most spectacular 911 ever’ par Porsche Motorsport it-self! C’est à Los Angeles, en Californie, the State of America qui apprécie le plus les autos Porsche ! N’est-ce pas Magnus Walker ! 😉 Porsche a présenté 19h30 à l’ouverture du salon LA Auto Show New 911 RSR. La supersportcar en compétition dès les 24 Heures de Daytona en janvier 2017.
Présentation Porsche 911 RSR
Porsche board members with @MariaSharapova @FrankWalliser and @MarcoUjhasi and the #New911RSR #LAautoshow pic.twitter.com/ouwfAY5YMo
— Porsche Motorsport (@PorscheRaces) 16 novembre 2016
« Tout en conservant le design typique de la 911, c’est la plus grande évolution de l’histoire de notre modèle GT. Sur cette 911, nous avons délibérément mis l’accent sur un moteur particulièrement moderne et léger, mais atmosphérique, car nos ingénieurs ont eu une grande latitude dans le développement du véhicule.
En dehors de cela, les règles GTE-Pro et GTE-Am stipulent une égalité absolue entre les différents concepts car le couple entre les moteurs turbocompressés et atmosphériques est aligné. »
– Dr Frank-Steffen Walliser, patron de Porsche Motorsport
Moteur Porsche 911 RSR
Porsche continue avec le moteur atmosphérique. Sous le capot de cet 911 RSR 2017, c’est 4.0L flat-six cylindres à plat, placé devant l’essieu arrière. Le Power Unit atmosphérique déploie 510 chevaux.
La décision de conserver un moteur atmosphérique a été prise il y a tout juste un an à Bahrain lors d’une ultime réunion entre le Dr Blume et le Dr Walliser. Ce dernier a confié qu’aucun modèle de route n’était prévu avec cette installation de moteur tout en précisant que les règles GTE permettaient d’optimiser la position du moteur
Water-cooled six cylinder boxer, positioned in front of the rear axle; 4,000 cm3, stroke 81.5 mm, bore 102 mm; ca. 375 kW (510 hp) depending on restrictor; four-valve technology; direct fuel injection; dry sump lubrication; single mass flywheel; power output limitation via restrictor; electronic throttle.
Six-speed sequential constant-mesh gearbox; two-shaft longitudinal layout with bevel gear; shifting via electronic shift actuator; shift paddles on the steering wheel; magnesium gearbox casing; multi-disc self-locking differential with visco unit; three disc carbon race clutch.
The new 911 RSR makes full use of the breadth of the Le Mans 24 Hours GT regulations, and in addition to systematic lightweight design, features the ultra-modern, flat-six unit positioned in front of the rear axle. The four-litre, extremely light aggregate features direct fuel injection as well as a rigid valve drive and is characterised by outstanding efficiency. The new 911 RSR will make its debut at the Daytona 24-hour race in January 2017.
“While retaining the typical 911 design, this is the biggest evolution by now in the history of our top GT model,” says . The new 911 RSR is a completely new development: the suspension, body structure, aerodynamic concept, engine and transmission have all been designed from scratch. The engine concept has enabled the designers to install a particularly large rear diffuser. Combined with a top-mounted rear wing adopted from the LMP1 race car, the 919 Hybrid, the level of downforce and the aerodynamic efficiency were significantly improved.
“For the 911 RSR, we deliberately focussed on a particularly modern and light normally-aspirated engine, as this gave our engineers immense latitude in developing the vehicle. Apart from that, in principle, the LM-GTE regulations stipulate the absolute equality of various drive concepts, as the torque characteristics of turbo and normally aspirated engines are aligned.” Depending on the size of the restrictor, the new normally-aspirated unit puts out around 375 kW (510 hp).
– Dr Frank-Steffen Walliser, Head of Porsche Motorsport
Porsche 911 RSR – 2017 – rear / arrière
La nouvelle 911 RSR a été conçu à partir d’une feuille blanche : Suspensions, structure du corps, concept aérodynamique, moteur et transmission.
Châssis Porsche 911 RSR
Front axle: double wishbone front axle; four-way vibration damper; twin coil spring setup (main and helper spring); anti-roll bars, adjustable by blade positions; electro-hydraulic power steering.
Rear axle: integrated rear axle subframe with double wishbone axle; four-way vibration damper; twin coil spring setup (main and helper spring); anti-roll bars, adjustable by blade positions; electro-hydraulic power steering; tripod drive shafts.
Two independent brake circuits for front and rear axle, adjustable via balance bar.
Front axle: One piece aluminium six-piston racing callipers with quick coupling; internally ventilated steel brake discs, 390 mm diameter; race brake pads; optimised brake cooling ducts.
Rear axle: One piece aluminium four-piston racing callipers with quick coupling; internally ventilated steel brake discs, 355 mm diameter; race brake pads; optimised brake cooling ducts.
Front axle wheels/tyres: One piece forged light alloy wheels, 12.5Jx18 offset 25 with centre lock nut; Michelin slick 30/68-18.
Rear axle wheels/tyres: One piece forged light alloy wheels, 13Jx18 offset 37 with centre lock nut; Michelin slick 31/71-18.
Electrics: Cosworth Central Logger Unit; CFRP multi-functional steering wheel with integrated display; shift paddles and quick release; Collision Avoidance System; controlled alternator in connection with LiFePo4 battery; LED headlights; LED taillights plus rain light; illuminated car number and leader light system; black light inside cockpit; electric adjustable wing mirrors with memory function; tyre pressure monitoring system (TPMS); drink system; air conditioning system; membrane switch panel on centre console with fluorescent labelling.
Design Porsche 911 RSR
Porsche 911 RSR – 2017 – sketch
La conception du moteur a permis aux concepteurs d’installer un diffuseur arrière bien plus grand. L’aileron arrière provient de la Porsche 919 Hybrid pour une meilleure efficacité aérodynamique. La carrosserie a été repensée avec des éléments entiers en fibre de carbone qui peuvent être changés dans un temps très court grâce à des attaches rapides. Modifications peuvent être apportées à la suspension beaucoup plus rapidement et plus facilement.
Design extérieur Porsche 911 RSR
Porsche 911 RSR – 2017 – front-face / face avant
The new 911 RSR’s serviceability has also been significantly improved: Entire elements of the carbon-fibre body can be exchanged completely in a very short time thanks to clever quick-release fasteners. Moreover, changes to the suspension setup can be performed much more quickly and easily.
With the look of the body wrapping, the 911 RSR is striking out in a new direction: For the first time, the GT racer bears the new factory design that has further developed the clear and dynamic design language of Porsche Motorsport. From a bird’s eye view, a hint of the Porsche emblem silhouette can be seen. The basic colours remain white, red and black.
Weight-optimised chassis in combined aluminium steel design; removable roof hatch for cockpit access; lifting bushes integrated in the roof; FT3 fuel cell in front of the car; welded-in roll cage; seat pursuant to FIA 8862-2009; rigidly mounted to the chassis; six-point safety harness for use with HANS; longitudinally adjustable pedalry; bodywork made of CFRP, quick-change; rear wing with “swan neck” mounts; four-post air jack system with safety pressure valve; electronically activated fire extinguisher system; heated windscreen.
Porsche 911 RSR – 2017 – front / avant
Porsche 911 RSR – 2017 – front-face / face avant
Porsche 911 RSR – 2017 – side-face / profil
Porsche 911 RSR – 2017 – front-face / face avant – on track / sur circuit
Porsche 911 RSR – 2017 – rear / arrière – on track / sur circuit
Design intérieur Porsche 911 RSR
Les nouveautés ont été installées dans la 911 RSR à l’intérieur. L’arceau est lui aussi nouveau, de même que le siège rigide qui renforce la sécurité du pilote. Avec le siège fixé au châssis, les pédales peuvent dorénavant être déplacées et ajustées pour s’adapter à chaque pilote.
Porsche 911 RSR – 2017 – onboard
Shift paddles on the steering wheel actuate the sequential six-speed gearbox with a magnesium housing, which delivers power to the 31-centimentre-wide rear wheels. The changeover to the new engine generation is now complete. After the 911 GT3 R and the 911 GT3 Cup, the spearhead of Porsche GT racing cars is now also powered by the same cutting-edge six-cylinder boxer engine family.
In the past, Porsche has already thoroughly pushed the limits with the concept of the 911 – in 1996 with the 911 GT1. With great success: In 1998 the 911 GT1 achieved the 16th overall victory for Porsche at the Le Mans 24-hour race. Back then, the fastest vehicle in the field emerged from the GT1 class.
For the first time, a Porsche GT race car features state-of-the-art assistance systems: the new 911 RSR is equipped with a radar-supported collision warning system, the so-called “Collision Avoid System”. Even in the dark, the faster LMP prototypes are detected early enough and misunderstandings can be avoided. A new safety cage concept and a new, rigidly-mounted racing seat enhance driver safety. With the seat fixed to the chassis, the pedalry can now been moved and adjusted to fit the driver.
Source et images :
Porsche Motorsport
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