Lotus 15 group S (1958)
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Chassis numbers

Specifications

27 units built
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Click here and here and here for 2.0
Click here for 1.1
Click here for 1.5

Coventry Climax FWA "85", straight 4 cyl, 4 stroke, petrol engine
1098cc, 72.4 x 66.68 mm
9.8 : 1
63.5 kW / 85 hp @ 6250 rpm
100 Nm / 74 ft-lb @ 4400 rpm
drop forged steel crankshaft with 3 main bearings
2 valves / cylinder, SOHC
aspiration, natural with 2 x 1-1/2" SU H4 horizontal carburetors
distributor ignition
water cooled

Coventry Climax FWB "100", straight 4 cyl, 4 stroke, petrol engine
1459cc, 76.2 x 80.0 mm
8.6:1
101 bhp / 75 KW @ 6000 rpm
125 Nm / 92 ft-lb @ 4400 rpm
forged steel crankshaft with 3 main bearings
2 valves / cylinder, SOHC
aspiration, natural with 2 x SU horizontal carburetors
water cooled

Coventry Climax FPF "150", straight 4 cyl, 4 stroke, petrol engine
1475cc, 81.2 x 71.1 mm
10:1
112 kW / 150 hp @ 7500 rpm
149 Nm / 110 ft-lb @ 6500 rpm
aluminium alloy block and head
forged steel crankshaft with 3 main bearings
2 valves / cylinder, DOHC, gear driven
aspiration, natural with 2 x SU DU6 horizontal or 2 x Weber 45 DCO/3 carburetors
water cooled
dry sump
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Coventry Climax FPF "200", straight 4 cyl, 4 stroke, petrol engine
1965cc, 86.4 x 83.8 mm
12.4:1
175 bhp / 131 KW
aluminium alloy block and head
forged steel crankshaft with 5 main bearings
2 valves / cylinder, DOHC, gear driven
aspiration, natural with 2 x Weber 45 DCO/3 carburetors
water cooled
dry sump

Borg Warner T10, 4 speed Manual gearbox
1st: 2.50/1
2nd: 1.67/1
3rd: 1.23/1
4th: 1.00/1
R: 2.50/1
final drive, 3.73/1, 3.90/1, 4.22/1, 4.55/1, 4.875/1
Aluminum Body over Tubular Steel Spaceframe chassis
front suspension: double wishbones with coil springs and telescopic shock absorbers
rear suspension: Chapman struts with radius trailing arms and fixed length half-shaft, coil springs and telescopic shock absorbers
Girling discs, all-round, inboard rear
Length 3480 mm (137 in)
Width 1524 mm (60 in)
Height 610 mm (24 in)
Wheelbase 2235 mm (88 in)
Track (fr/r) 1194 mm (47 in) / 1219 mm (48 in)
tires, front 4.50 - 15", rear 5.50 - 15"
450kg
fuel tank, 85 lt
drag coefficient, 0.35


Results in WSCC

Season
Car entry, chassis number Car number/ result
Buenos Aires Sebring Targa Florio Nurburgring Le Mans Tourist Trophy
Team 1000km 12h 1000km 24h
Team Lotus Engineeering, 15-603 (FWA 85) #30, eng ine
Team Lotus Engineeering, 15-607 (FPF 200) #26, eng ine
Team Lotus Engineeering, 15-608 (FPF 150) #35, acci dent
J. King, 15-605 (FPF 150) #25, acci dent
John Coombs Racing Organisation, 15-609 (FPF 200) #24, gear box
Car Exchange (1.5) #27, eng ine
Statistics
Works Starts/finishes 6/0 1/0 2/0 3/0
Drivers Team entries and car number
Team Lotus Engineering
Cliff Allison 26 30
Graham Hill 26 30
Jay Chamberlain 35
Pete Lovely 35
Car Exchange
Bill Frost 27
Bob Hicks 27
John Coombs Racing Organisation
Bruce McLaren 24
Syd H. Jensen 24
J. King
Edward Greenall 25
John Campbell-Jones 25

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Drawings

Rear suspension

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"Chapman strut" as it was located in Lotus Elite
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