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Derek Bennett built specials for the 750 and 1172 formulae and Formula Junior before introducing the first Chevron as a 2-seater for Club racing, with Holbay-Ford 1½-litre dry-sump engine. A run of successes was achieved by this Chevron model, in the hands of Bennett, Robert Ashcroft and others. In 1966 a G.T. appeared. The tubular chassis was fitted with Armstrong coil/ damper units, and wore a metal body, with hinged sections at front and rear. As solid, rear-mounted BMW 2-litre or Cosworth-Ford 1600cc engines drove through Hewland HD5 gearboxes, but two of the seven Chevron cars completed before the end of the year embraced BRM V8 and Coventry-Climax engines respectively. 1967 developments included a Formula 3 single-seater, and a 3-litre Martin V8-engined Group 6 sports car.
The Chevron B6/B8 GT model was homologated for Group 4 racing in 1968, and 90 were made in all. The Chevron B9 was a successful derivative of the 1967 Formula 3 model, and the Chevron B10 a Formula 2 version. Chevron B12 was a Repco V8-engined sports car (there was no B11 or B13). The Chrevron B14 was the 1968 Formula B car, and Chevron B15 the 1969 Formula 3/B machine that achieved many successes. Nevertheless these were overshadowed by the Groups 5 and 6 2-litre sports-racing cars: the tubular-framed Chevron B16 GT of 1969, the Chevron B19 spyder of 1971 and its successor the Chevron B21 of 1972; these achieved a remarkable record of class victories and championships. The Chevron B17, B18 and B20 were the single-seater models for 1970, 1971 and 1972 for Formulae 2, 3, B and (later) A. The B18 broke new ground for Chevron in adopting a central-tube monocoque construction. The Chevron B23 was the 1973 2-litre sports-racing car, B24 a Formula 5000 design which proved promising in 1972 in the hands of Brian Redman, and the Chevron B25 a similar pure monocoque design for Formula 2.
Source: Georgano, encyclopedia of motorcar; DF
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