Walter Royal

The Walter company was founded in 1911 by Josef Walter in Prague as a manufacturer of motorcycles and motor tricycles. Automobile production began in 1913, and by the late 1920s Walter had become Czechoslovakia's fourth-largest car maker. The firm initially focused on its own designs before shifting toward licensed Fiat models in the mid-1930s. The Royal was introduced in 1931 as the flagship of Walter's original lineup, alongside models such as the Super 6 and Standard 6. The car made its public debut at the Prague Motor Show in 1931. Contemporary publicity highlighted its performance with a demonstration drive from Prague to Paris completed in 18 hours, averaging approximately 25 litres per 100 km (9.5 mpg imperial). A limousine version was photographed in front of the Trocadéro in Paris that same year. Production coincided with the onset of the Great Depression, which severely curtailed demand for luxury vehicles across Europe. Walter's overall car output fell sharply from a 1929 peak of 1,498 units to just 217 in 1932. The company responded by introducing more affordable models (such as the Junior, Regent, Princ, and Lord) and eventually ceased independent passenger-car design. The Royal was discontinued after 1932, though the V12 engine was later enlarged to 7.4 litres for use in buses and fire engines.

The Walter Royal was built on a substantial chassis with a 3,700 mm (145.7 in) wheelbase and a track of 1,455 mm (57.3 in) front and rear. It was rear-wheel drive with a four-speed manual gearbox (optional three-speed with overdrive on some variants).^[2]

• Configuration: 60° V12, liquid-cooled, OHV, two valves per cylinder
• Displacement: 5,879 cc (358.7 cu in)
• Bore × stroke: 76.0 mm × 108.0 mm
• Compression ratio: 5.0:1
• Fuel system: Two Stromberg carburettors
• Power: 120 PS (88 kW; 118 hp) at 3,000 rpm
• Top speed: 140 km/h (87 mph) for the limousine; up to 145 km/h (90 mph) for the cabriolet Petera

• Length: 5,015 mm (197.4 in)
• Width: 1,760 mm (69.3 in)
• Height: 1,750 mm (68.9 in)
• Curb weight: 2,050 kg (4,519 lb)
• Seating: 6
• Doors: 4

The cabriolet Petera variant was slightly longer (5,180 mm) and lighter (1,900 kg), with five seats and a reported top speed of 145 km/h.

Exact production figures are uncertain because of the model's obscurity and the economic conditions of the era. Sources variously cite three, six, or as many as twelve examples built between 1931 and 1932. No documented retail sales are recorded; the cars appear to have remained within the Walter factory or its ownership circle. Bodywork was supplied by external coachbuilders. The most notable variant was the four-door cabriolet by Carrosserie Petera, a leading Prague firm whose work on the Royal was considered one of its premier creations. A formal limousine body was also offered.^[3]