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After leaving Sizaire-Naudin, Maurice Sizaire designed an almost completely conventional luxury car, the Sizaire-Berwick car. This Sizaire-Berwick car was made initially in France, with a 4-litre 20hp sv Monobloc engine, and full electrical equipment, and from 1920, also in Britain by F.W. Berwick, the British agents for Sizaire-Naudin. Rated at 25/50hp, the post-war 1 Sizaire-Berwick car had an sv 4½-litre engine with only 4 cylinders (unusual in a machine of its class), but the Sizaire-Berwick car was a very smooth-running unit. It developed 60bhp at a modest 2.000rpm. The pre-war radiator on the Sizaire-Berwick car was a copy of the Rolls-Royce, but after Derby instituted legal proceedings, the front of the Sizaire-Berwick car was changed from a flat surface to a shallow V with a flat apex. From 1923, after Austin had gained a controlling interest, the British Sizaire-Berwick car company also turned out two models with Austin Twenty and Twelve engines, as well as a 3.2-litre six. Production of British Sizaire-Berwick cars ceased after 1925, though a French Sizaire-Berwick car powered by an American 6-cylinder Lycoming engine was shown at the 1927 Paris Salon.
Source: Georgano, encyclopedia of motorcar; TRN
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