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A Traditional Sports C Ar The AC MkV
The original AC Shelby Cobra was based on the AC Ace, a two-seater open sports cars powered by a modest 2.0 liter six-cylinder engine. The twin-tube frame had transverse leaf springs and independent suspension front and rear. Quite advanced in its day, but the suspension did not locate the wheels that well.
AC Cars, one of the oldest British car companies, has been revived several times, and various sports cars have been designed, but never quite made it ? or not for long. Now, the firm has gone back to its roots. It is supplying Shelby Automotive with aluminum bodies for its Cobras, and has introduced its own car ? the AC MkV, which is being marketed in Europe and the USA.
So is there room for another hard-core sports car that looks like all those Cobra replicas? Well, with the AC MkV you get the original, the car is complete, and the body is made from advanced materials. Most of the replicas are kit cars. Not everyone wants to spend three to six months building a car.
Retains the 60s look of the Cobra
Of course, the car looks like a Cobra, complete with the oval grille, small circular headlamps and wide flared rear fenders. A small air intake below the grille, and two small side air intakes give the car some identity. The body is made from carbon fiber composites, unlike the earlier model, or the Cobras, which have aluminum panels, or the lookalikes which make do with glass fiber.
Twin-tube frame and wishbone suspension
The basis of the AC MkV is a ladder-type twin-tube frame made from 4.0-inch steel tubes, as it was on the earlier MkIV which went out of production in 2002. Double wishbone suspension is used front and rear, and these links have a rather narrow base compared with more modern supercars.
Conventional coil spring/damper units are used all round, and roll is controlled by front and rear anti-roll bars. The steering is by rack and pinion.
Into this frame is installed a Ford 5.0 liter V-8 engine and six-speed manual gearbox. In European trim the engine develops 340 bhp @ 6,000 rpm, and is red-lined at 6,800 rpm, giving a good speed range. Maximum torque is 369 lb ft (500 Nm) @ 4,800 rpm.
The AC MkV is a taut lightweight sports car which has the brakes, wheels and tires to match ? 7 inch rims at the front and 8 inch at the back. Kerb weight is just 2,643 lb (1,200 kg) giving a power-to-weight ration of 280 bhp per tonne. You?ll get neck-snapping acceleration to match many more exotic cars, and a lot of fun.
John Hartley is editor of http://www.fast-autos.com, an online magazine devoted to fast cars and supercars. He has written from many of the world's top auto magazines, and has written many books about cars and the auto industry, including 'Suspension and Steering Q&A' and 'The Electronics Revolution in the Motor Industry'.
Sports Car
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