Bugatti Royale - Design

Design

Crafted by Ettore Bugatti, the Type 41 is said to have come about because he took exception to the comments of an English lady who compared his cars unfavourably with those of Rolls-Royce.

The prototype had a near 15-litre capacity engine. The production version, its stroke reduced from 150 mm (5.9 in) to 130 mm (5.1 in) had a displacement of 12.7 litres. The engine was built around a single huge block, and at (apx. 4.5 ft (1.4 m) long x 3.5 ft (1.1 m) high), is one of the largest automobile engines ever made, producing 205 to 223 kW (275 to 300 hp). Its eight cylinders, bored to 125 mm (4.9 in) and with a stroke length of 130 mm (5.1 in), each displaced more than the entire engine of the contemporary Type 40 touring car. It had 3 valves per cylinder (two inlet:one exhaust) driven by a centrally positioned single overhead camshaft. Nine bearings were specified for reliability, but only a single custom carburettor was needed. The engine was based on an aero-engine design that had been designed for the French Air Ministry, but never produced in that configuration.

The chassis was understandably substantial, with a conventional semi-elliptic leaf spring suspension arrangement at the front. At the rear the forward-facing Bugatti quarter-elliptics were supplemented by a second set facing to the rear. Massive brake shoes were mechanically operated via cable controls: the brakes were effective but without servo-assistance required significant muscle power from the driver. The car's cast "Roue Royale" wheels measured 610 mm (24 inches) in diameter.

Reflecting some tradition based fashions of the time, the driver was confronted by a series of knobs of whalebone, while the steering wheel was covered with walnut.

All Royales were individually bodied. The radiator cap was a posed elephant, a sculpture by Ettore's brother Rembrandt Bugatti.

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