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Lotus 56
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| Lotus 56 | |
|---|---|
| Race Car | |
| Category | Indianapolis 500 |
| Constructor | Lotus |
| Chassis | |
| Suspension (front) | |
| Suspension (rear) | |
| Engine | Pratt & Whitney gas turbine engine |
| Power | 500 hp (370 kW) @ N/A rpm 1150.44 lb-ft. (1560 Nm) of torque @ N/A rpm |
| Transmission | 4WD |
| Fuel | |
| Tyres | |
| Notable entrants | Team Lotus |
| Notable drivers | Graham Hill Joe Leonard Art Pollard |
| Debut | 1968 Indianapolis 500 |
| Races competed | |
| Race victories | |
| Constructors' Championships | |
| Drivers' Championships | |
| Pole positions | |
| Fastest laps | |
| Designer | Maurice Philippe |
The Lotus 56 was designed by Maurice Philippe as Lotus 1968 entry in the Indianapolis 500, replacing the successful Lotus 38.
Based on Parnelli Jones' STP Granatelli turbine car ("Silent Sam") that almost won in 1967, Colin Chapman's team again produced an even more innovative design. The 56 was shaped like a wedge on wheels, in the same vein as the later Lotus 72, which was also designed by Philippe (who had replaced Len Terry, the designer of previous Lotus Indy 500 cars)<ref>Setright, L.J.K., "Lotus: The Golden Mean", in Northey, Tom, ed. World of Automobiles (London: Orbis, 1974), Volume 11, p.1233.</ref> and Chapman. The engine of the 56 was also noteworthy, as it was a Pratt & Whitney gas turbine engine of over 500 hp (370 kW) and 1560 Nm (1150.44 lb/ft) . To get the best out of the power produced, the 56 was fitted with four wheel drive, something also used on the Lotus 63 without success.
Jim Clark was enthused about the car in testing, but he was tragically killed in an F2 Lotus 48 in April 1968 before he could qualify the car at Indy - an occasion in which Mike Spence died in the 56, adding more tragedy to Team Lotus.
Nevertheless, Graham Hill, Joe Leonard, and Art Pollard were entered for the race, with Leonard claiming pole position. In the race Leonard was leading with ease with just a handful of laps to go when the engine failed. Lotus' innovation incurred the wrath of the governing body of American motorsport, and USAC deemed turbine cars and four wheel drive illegal shortly after, much to Chapman's frustration.
The 56 would not be a total loss in any event. It inspired the Formula Ford 61 and, in combination with wings (pioneered by the 49), would transform Formula One.<ref name="Setright, p.1234">Setright, p.1234.</ref>
Gallery
Complete Racing Results
(key) (results in bold indicate pole position)
| Year | Team | Engine | Tyres | Drivers | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | Points | WCC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| YYYY | (Constructor) | (Engine) | (Tyre code) | ||||||||||||||||||||
Notes and references
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