Lotus 31

The Lotus 31 was a racing car produced by Lotus for the new 1-litre Formula 3 introduced in 1964, replacing the expensive Formula Junior.^[1] The chassis was a multi-tubular spaceframe, of similar design to the 1962 Lotus 22 Formula Junior. A 997 cc (60.8 cu in) Ford Cosworth 105E with Single Choke Weber or SU carburettors produced 97 bhp (72 kW) at 8000rpm.^{[citation needed]} The 31 had little success against the more advanced monocoque cars that dominated in 1964. Records show only 12 were built in 1964/5.^[2]

In 1966 19 cars were built with the Chassis 22/F3. The relative simplicity and low price of the car made it an ideal training car. Motor Racing Stables at Brands Hatch ran four cars to graduate students from Lotus Cortinas. The Jim Russell Racing Driver School ran the cars at Snetterton, later being recognised as a club by the RAC. The Jim Russell School ran five 31s at Brands Hatch BARC Trophy Races in July 1967.

References

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Team Lotus

Personnel
Founder	Colin Chapman
Notable personnel	Frank Coppuck Frank Dernie Gérard Ducarouge Maurice Philippe Peter Warr Peter Wright Len Terry

Drivers
Notable drivers	Mario Andretti Elio de Angelis Jim Clark Martin Donnelly Emerson Fittipaldi Mika Häkkinen Johnny Herbert Graham Hill Jacky Ickx Nigel Mansell Satoru Nakajima Gunnar Nilsson Ronnie Peterson Nelson Piquet Carlos Reutemann Jochen Rindt Ayrton Senna John Surtees Derek Warwick Alex Zanardi
World Champions	Mario Andretti Jim Clark Emerson Fittipaldi Graham Hill Jochen Rindt

Cars
Formula One cars	12 16 18 21 24 25 33 43 49 56B 63 72 76 77 78 79 80 81 86 87 88 91 92 93T 94T 95T 97T 98T 99T 100T 101 102 107 109 112
Formula Two cars	12 16 18 32 35 41 44 48 59 69
Formula Three cars	22 31 35 41 55 59 69
Formula Junior cars	18 20 22 27
Formula Ford cars	51 59 61 69
Formula 5000 cars	68 70
Tasman Series cars	32 39 67
Indianapolis 500 cars	29 34 38 42 56 64 96T
Sports racing cars	15 17 19 23 30 40 47 53

Formula One titles
Drivers' titles	1963 1965 1968 1970 1972 1978
Constructors' titles	1963 1965 1968 1970 1972 1973 1978

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