2005 Bentley Arnage Drophead Coupe

Bentley Arnage Drophead Coupé – the world’s most elegant convertible

From Bentley’s very earliest days, open-top cars have been an intrinsic part of the company’s heritage. Over the decades that followed many revered convertible or ‘drophead’ models were created, both by notable Bentley coachbuilders such as Mulliner, Park Ward, and later ‘in-house’ at the company’s Crewe headquarters. From the 1955 Park Ward S1 Drophead Coupé, through the later Corniche and Continental eras, up to the magnificent Azure of 1995, an entire portfolio of unashamedly glamorous and wonderfully desirable cars meant that Bentley retained its reputation as the creator of the world’s most elegant convertibles.

Now that reputation has grown once more with the unveiling of the new Bentley Arnage Drophead Coupé show car at the 2005 Los Angeles Auto Show. It is a true four-seater convertible for the 21st century: a unique blend of classic Bentley design and craftsmanship married to a high-technology platform sourced from the 2005 Model Year Arnage. As such, it is the perfect natural successor to the Bentley Azure, whose eight-year lifespan cemented the marque’s status as the prime provider of four-seater convertibles to this sector of the market.

First and foremost, the design is unmistakeably Bentley – it shares the same front end as the current Arnage range and its platform ensures it seats four adults in complete comfort. But it is also unmistakeably unique. The entire cabin and rear section of the car are newly designed, with a stunning new interior that has been influenced by contemporary furniture design; the objective being to create an opulent and inviting seating area that reflects its status as a car that is at home in Palm Springs or the Riviera.

The Arnage Drophead Coupé show car is more than just a conceptual design study, however. Its unveiling in Los Angeles represents the culmination of a truly innovative development programme that means the car is entirely production viable, as Bentley’s chairman Dr Franz-Josef Paefgen explains: “The 2005 Arnage range has been extensively re-engineered at significant cost and is a very modern, high-technology saloon. It is natural, therefore, that we would use this base to further our reputation as the pre-eminent builder of large, luxury convertibles in the world.

“We had such amazing success with the Bentley Azure, which has developed a cult following although production stopped in 2003. There’s no reason why this new Arnage derivative couldn’t fill the gap left by the Azure. If customer demand is there, it could go into production within a very short space of time – as early as Spring 2006.”

Design

Bentley’s design team cites the 1955 Park Ward S1 Drophead Coupé and 1995 Azure as its main influences for the Arnage Drophead Coupé show car. Like the ’50s convertible, the car has a deep body with a single feature line that runs along both flanks and rises at the powerful rear haunches before spearing off at the rear of the car. Similarly, the Azure’s fast and flowing roofline is echoed in the show car’s stunning seven-bow canvas roof that gives the car such a visible sporting profile when raised.

A new rear boot section also helps to accentuate the contemporary feel of the new convertible. Prominent wheel arches grace a slender, narrowing boot that results in a ‘horse shoe’ trailing edge. This graceful shape is reminiscent of the first Crewe-built Bentley, the 1946 MK6, and the overall effect is a subtle nod to the power and performance that lies beneath the stunning Meteor Blue bodywork.

New LED rear tail-lamps use technology borrowed from the Continental GT coupé range; while a chrome surround echoes the Arnage front head-lamp units. Further brightwork is found in the form of chrome exhaust finishers and handcrafted chrome bumpers and sills that extend around the entire car and sit alongside unique, six-spoke, 19-inch chrome-finished alloy wheels.

Of course, the nature of a convertible means that its interior is often on display as much as its exterior and the design team knew that the car’s spacious cabin would need to make as big a statement as its stunning body. The decision was taken early on in the programme to design a rear-seat compartment that captures some of the exquisite feel and look of earlier Bentley convertibles.

It’s not only heritage that influenced the Arnage Drophead Coupé’s look and feel. The interior design team appreciated the simplicity of the contemporary Peel chair created by Norwegian Olav Eldoy, who recognised that the swirling curve of a slice of orange peel could be the concept for a body-hugging seat. Those same principles are reflected in the curving rear seat and arm rest. For added atmosphere, indirect lighting casts a warm glow of light behind the door arm rests.

As in every Bentley, peerless craftsmanship is to the fore in the cabin. Beautiful Burr Oak veneers with a Boxwood inlay act as a counterpoint to the Cotswold and Nautic Blue leather while a wooden steering wheel with inlayed chrome rim is unique to the car.

Engineering and specification

The twin-turbocharged V8 engine, double-wishbone suspension and extremely rigid body structure of the 2005 Model Year Arnage R provide a state-of-the-art basis for the Drophead Coupé. The show car is powered by a 450bhp (336Kw) version of the Arnage R’s 6.75-litre twin-turbocharged intercooled V8 engine and produces 875Nm (645lb ft) of torque.

The Arnage’s impressive ventilated brakes with Electronic Stability Programme, Antilock Braking System and Electronic Brake pressure Distribution work in conjunction with the independent double wishbone suspension and a computer-controlled adaptive electro-hydraulic damping system to ensure optimum stability and handling at all times. The Arnage Drophead Coupé also benefits from the introduction of the new comfort suspension system used on the Arnage R.

To guarantee the Drophead Coupé met aggressive body stiffness targets set at the start of the project, significant stiffening members have been added to the underlying Arnage chassis. These strengthened steel parts lie in the sill section of the car and extend into the A-pillars that form the windshield frame. Beneath the car, cross-bracing members reinforce the whole body shell. The result is a car that displays remarkable body stiffness.

Strengthening has also been applied to the body structure behind the rear seats where an advanced rollover protection system has been fitted. This immediately detects if the car is in danger of inverting and deploys two hoops that are integrated within the rear headrests. In conjunction with the strengthened front windshield frame, these are capable of supporting the entire weight of an over-turned car.

Not surprisingly, significant time and effort has gone into making the folding roof both beautiful as well as highly functional. Operated hydraulically at the touch of a switch, the impressive, three-layer canvas roof is elegantly stowed beneath the rear parcel shelf in a matter of 25 seconds. Because the roof is held in a separate well area, there is no impact on the generous boot space which was designed to be able to hold two sets of golf clubs and hand luggage.

Conclusion

The Arnage Drophead Coupé show car demonstrates that Bentley continues to lead the world when it comes to creating superlative cars that combine classic craftsmanship with contemporary design and unrivalled opulence. Indeed, Bentley is uniquely positioned to be able to offer cars of this quality in small production volumes, as Ashley Wickham, chief engineer, explains:

“There is clearly nothing quite like this car in the world – it is in a niche of its own. By the spring of 2006 we expect to be able to start production if there is sufficient interest from potential customers. It truly is the world’s most elegant convertible.”

“The launch of this car highlights the amazing flexibility of Bentley’s engineering processes, demonstrating yet again that Bentley is the leader when it comes to bespoke cars,” says Dr Ulrich Eichhorn, member of the board, engineering. “Some of the skills we have at Bentley don’t exist anywhere else in the world and it shows in this car.”

source: Bentley