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FoS20162016 0624 112938AA (27785376742)
Lotus 43
Race Car
Category Formula One
Constructor Lotus
Designer Colin Chapman
Predecessor Lotus 33
Successor Lotus 49
Chassis Aluminium monocoque
Suspension (front) top rocker arms, lower wishbones, inboard coil springs over dampers
Suspension (rear) reverse lower wishbones, twin radius arms, coil springs over dampers, anti-roll bar
Engine BRM P75
2,996 cc (183 cu in) H16 Naturally aspirated
Electric_motor {{{Electric motor}}}
Battery {{{Battery}}}
Power
Transmission BRM T82 6-speed manual
Weight 563 kg (1,241 lb)
Fuel Esso
Brakes {{{Brakes}}}
Tyres Firestone
Notable entrants Team Lotus
Notable drivers 25px UK Peter Arundell
25px UK Jim Clark
25px UK Graham Hill
Debut 1966 Belgian Grand Prix
Races competed 5
Race victories 1
Podiums 1
Constructors' Championships 0
Drivers' Championships 0
Pole positions 0
Fastest laps 0

The Lotus 43 was a Formula One racing car designed by Colin Chapman for the 1966 season. Hampered by its heavy and unreliable BRM engine, it won only one race, the 1966 United States Grand Prix.

Concept[]

The Lotus 43 was partially based on the Lotus 38 Indycar, due to Chapman's experience at Indy with larger engine capacity and tyre/suspension setup. The car was designed in this way in response to new regulations which came into force in 1966, which increased the engine capacity to 3 litres. Along with newer, wider tyres better able to handle the power of the larger engines, the need for a more robust design was obvious.[1]

Cosworth were developing a new engine for Lotus, the DFV, to be introduced for the 1967 Formula One season, and in the meantime Chapman made a deal for use of the BRM P75 H16 engine. The P75 on paper was technically advanced and powerful, and Chapman had hopes that it would power his cars to another successful season.[2]

The first sign of trouble was when the H16 engine arrived and it required four men to lift it from the truck. The engine proved to be overweight, unreliable and was unable to produce the promised power.

Engine problems aside, the 43 chassis was an excellent design and elements of it were used in its 1967 successor, the far more successful Lotus 49, including the use of the engine as a stressed structural member which bore weight and to which the rear suspension was attached.

Racing history[]

1966[]

The car was supposed to debut at the 1966 Monaco Grand Prix, driven by Peter Arundell, but it was unavailable. Its first outing at the following Belgian Grand Prix ended during practice, when the engine gave out.[3]

The 43 reappeared at the Italian Grand Prix but retired with gearbox failure. Clark then won the United States Grand Prix at Watkins Glen, the only race win for the P75 engine, using a spare engine loaned by the BRM team. However, gearbox failure again led to the 43's retirement from the final race of the season, the Mexican Grand Prix.

1967[]

In 1967 the 43 made its final appearance at the South African Grand Prix at the Kyalami circuit, where Clark and new team mate Graham Hill both retired their cars.

Only two cars were built and were later sold to Robert Lamplough and Jock Russell, who fitted them with 4.7 litre Ford V8 engines and competed in Formula 5000 events.

Complete results[]

Formula One World Championship results[]

(key)

Year Entrant Engine Tyres Drivers 1 2 3 4 5 6 7 8 9 10 11 Points WCC
1966 Team Lotus BRM P75 3.0 H16 F MON BEL FRA GBR NED GER ITA USA MEX 131 5th
Peter Arundell DNS Ret
Jim Clark Ret 1 Ret
1967 Team Lotus BRM P75 3.0 H16 F RSA MON NED BEL FRA GBR GER CAN ITA USA MEX 62 8th
Jim Clark Ret
Graham Hill Ret

^1  Total points scored by all Lotus-BRM cars, including 4 points scored by drivers of Lotus 33 variants.
^2  Total points scored by all Lotus-BRM cars, including 6 points scored by drivers of Lotus 33 variants.

Non-championship Formula One results[]

(key)

Year Entrant Engine Tyres Drivers 1 2 3 4
1966 Team Lotus BRM P75 3.0 H16 F RSA SYR INT OUL
Jim Clark DNS

PC simulation[]

A driveable, detailed reconstruction of the Lotus 43 (with matching car physics) appeared in 2007 in the freely-available '66 Mod' for the PC-based racing simulation Grand Prix Legends.

References[]

Lotus 25 Jim Clark Donington
Team Lotus

Founder

Colin Chapman

Notable personnel

Frank Dernie · Gérard Ducarouge · Maurice Philippe · Peter Warr · Peter Wright · Len Terry

Notable drivers

25px USA Mario Andretti · 25px Italy Elio de Angelis · 25px Great Britain Jim Clark · 25px Great Britain Martin Donnelly · 25px Brazil Emerson Fittipaldi · 25px Finland Mika Häkkinen · 25px Great Britain Johnny Herbert · 25px Great Britain Graham Hill · 25px Belgium Jacky Ickx · 25px Great Britain Nigel Mansell · 25px Japan Satoru Nakajima · 25px Sweden Gunnar Nilsson · 25px Sweden Ronnie Peterson · 25px Brazil Nelson Piquet · 25px Argentina Carlos Reutemann · 25px Austria Jochen Rindt · 25px Brazil Ayrton Senna · 25px Great Britain John Surtees · 25px Great Britain Derek Warwick · 25px Italy Alex Zanardi

World Champions

* 25px USA Mario Andretti · 25px Great Britain Jim Clark · 25px Brazil Emerson Fittipaldi · 25px Great Britain Graham Hill · 25px Austria Jochen Rindt

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

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Formula Junior cars

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Formula 5000 cars

68 · 70

Tasman Series cars

32 · 39 · 67

Indianapolis 500 cars

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Sports car racing cars

15 · 17 · 19 · 23 · 30 · 40 · 47 · 53

Drivers' titles

1963 · 1965 · 1968 · 1970 · 1972 · 1978

Constructors' titles

1963 · 1965 · 1968 · 1970 · 1972 · 1973 · 1978

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Smallwikipedialogo.png This page uses some content from Wikipedia. The original article was at Lotus 43. The list of authors can be seen in the page history. As with Autopedia, the text of Wikipedia is available under the GNU Free Documentation License.



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