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Lotus 21 (1961) Engine 1498cc Coventry Climax at the 2013 VSCC Spring Start, Silverstone, RK

Lotus 21 (1961) Engine 1498cc Coventry Climax at the 2013 VSCC Spring Start, Silverstone, by Robert Knight - Flickr.com

The Lotus 21 was a Formula One racing car designed by Colin Chapman. It was a mid-engined design using a tubular spaceframe structure skinned with fibreglass panels, of a more advanced build than seen in the Lotus 18. Powered by the Coventry Climax FPF 4-cylinder engine, it used disc brakes all round.

Used by Team Lotus and the privateer Rob Walker Racing Team in 1961, the 21 was the first works Lotus to win a Formula One Grand Prix, in the hands of Innes Ireland at the 1961 United States Grand Prix. (Previous victories were taken by Rob Walker's team). Customer teams continued to use it up to 1965. It was soon rendered obsolete by the Lotus 24 and the monocoque Lotus 25 introduced for the 1962 Formula One season.