Car · Team Lotus · 1977–1978

Lotus 78

Wings make downforce and pay for it in drag. Peter Wright's insight was that the whole underbody could be a wing instead, and that the ground itself would double the effect if the sides were sealed. The 78 was quick everywhere and unbeatable in slow corners. It should have won the 1977 championship and did not, because the DFV kept failing.

Seasons
1977–1978
Entries
50
Wins
5
Poles
7
Fastest laps
5

Why it mattered

The idea. Shape the underside of the sidepods as inverted wings and seal the edges: the car makes downforce without making drag

New on this car. Ground effect, and sliding skirts to seal the low-pressure area at the car's edges

What it did. 7 wins and 9 poles across 1977 and early 1978, before the 79 replaced it.

Designers
Colin Chapman, Tony Rudd, Ralph Bellamy, Peter Wright, Martin Ogilvie
Supersedes
lotus-72
Design life
1977–1978
Confidence
high

Specification

Chassis
Aluminium monocoque
Front suspension
Double wishbone, inboard spring/damper
Rear suspension
Parallel top links, lower wishbones, twin radius arms, outboard spring/damper
Brakes
disc
Gearbox
Hewland FG400
Gears
5-speed
Tyres
Goodyear
Fuel
Valvoline
Engine
Ford-Cosworth DFV
Configuration
V8
Capacity
2,993 cc
Aspiration
naturally aspirated
Power
465 bhp
Power note
—
Weight
588 kg
Wheelbase
2,741 mm
Track, front
1,702 mm
Track, rear
1,600 mm

A blank is a figure nobody published for this car. Where several teams quote the same number in a season it is usually the rule they were all built to rather than a measurement, so it is kept with the regulation limits instead of here.

5 wins can be traced to this chassis; its article publishes 7. Neither is wrong. A win counts here only where the entry list says which car the driver was in, and a team running two designs in a season does not always say. The unresolved seasons are listed below.

Every entry 50 entries

Every entry
SeasonGrand PrixDriverGridResultOut
1978Canadian Grand PrixHéctor Rebaque—DNQDNQ
1978United States Grand PrixHéctor Rebaque23DNFClutch
1978Italian Grand PrixHéctor Rebaque—DNQDNQ
1978Dutch Grand PrixHéctor Rebaque2011Finished
1978Austrian Grand PrixHéctor Rebaque18DNFAccident
1978German Grand PrixHéctor Rebaque186Finished
1978British Grand PrixHéctor Rebaque21DNFGearbox
1978French Grand PrixHéctor Rebaque—DNQDNQ
1978Swedish Grand PrixHéctor Rebaque2112Finished
1978Spanish Grand PrixHéctor Rebaque20DNFExhaust
1978Belgian Grand PrixHéctor Rebaque—DNPQDNPQ
1978Monaco Grand PrixHéctor Rebaque—DNPQDNPQ
1978United States Grand Prix WestHéctor Rebaque—DNPQDNPQ
1978South African Grand PrixHéctor Rebaque2210Finished
1978Brazilian Grand PrixHéctor Rebaque22DNFPhysical
1978Argentine Grand PrixHéctor Rebaque—DNQDNQ
1977Japanese Grand PrixMario Andretti1DNFCollision
1977Japanese Grand PrixGunnar Nilsson14DNFGearbox
1977Canadian Grand PrixMario Andretti19Engine
1977Canadian Grand PrixGunnar Nilsson4DNFAccident
1977United States Grand PrixMario Andretti42Finished
1977United States Grand PrixGunnar Nilsson12DNFAccident
1977Italian Grand PrixMario Andretti41Finished
1977Italian Grand PrixGunnar Nilsson19DNFSuspension
1977Dutch Grand PrixMario Andretti1DNFEngine
1977Dutch Grand PrixGunnar Nilsson5DNFAccident
1977Austrian Grand PrixGunnar Nilsson16DNFEngine
1977Austrian Grand PrixMario Andretti3DNFEngine
1977German Grand PrixMario Andretti7DNFEngine
1977German Grand PrixGunnar Nilsson9DNFEngine
1977British Grand PrixGunnar Nilsson53Finished
1977British Grand PrixMario Andretti614Engine
1977French Grand PrixMario Andretti11Finished
1977French Grand PrixGunnar Nilsson34Finished
1977Swedish Grand PrixMario Andretti16Finished
1977Swedish Grand PrixGunnar Nilsson719Wheel bearing
1977Belgian Grand PrixGunnar Nilsson31Finished
1977Belgian Grand PrixMario Andretti1DNFCollision
1977Monaco Grand PrixMario Andretti105Finished
1977Monaco Grand PrixGunnar Nilsson13DNFGearbox
1977Spanish Grand PrixMario Andretti11Finished
1977Spanish Grand PrixGunnar Nilsson125Finished
1977United States Grand Prix WestMario Andretti21Finished
1977United States Grand Prix WestGunnar Nilsson168Finished
1977South African Grand PrixGunnar Nilsson1012Finished
1977South African Grand PrixMario Andretti6DNFAccident
1977Brazilian Grand PrixGunnar Nilsson105Finished
1977Brazilian Grand PrixMario Andretti3DNFIgnition
1977Argentine Grand PrixMario Andretti85Wheel bearing
1977Argentine Grand PrixGunnar Nilsson10DNSDNS
Show all 50 entriesShow the first 10, Every entry

Photographs

From Wikimedia Commons, each shown with the photographer and licence its terms require.

A photograph marked unchecked has a file name that does not name the car it is shown for. Most are still the right car, filed under the driver rather than the machine — but nobody has confirmed these one by one.

Where this comes from

Constructor
Team Lotus
Predecessor
Lotus 77
Successor
Lotus 79
Races (published)
33
Wins (published)
7
Poles (published)
9
Confidence
reference
Specification source
https://en.wikipedia.org/wiki/Lotus_78
Register source
https://github.com/f1db/f1db