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Singer SM Roadster

(1951 model)

Brief specs of 1951 Singer SM Roadster

2-door 2-seater roadster, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, SOHC (single overhead camshaft), 1497 cm3 / 91.4 cu in / 91.4 cu in, 35.8 kW / 48.0 hp / 48.0 hp @ 4200 rpm / 4200 rpm / 4200 rpm, 98.0 N·m / 72.3 lb·ft / 72.3 lb·ft @ 2200 rpm / 2200 rpm / 2200 rpm, manual 4-speed transmission, rear wheel drive, 121 km/h / 75 mph / 75 mph top speed

units: metric UK US

Basic (general) data

Marque (make)SingerIssued from1951
ModelSM RoadsterIssued until
SerieSMNumber made
Model familyBody construction
Model codeBody designation
ManufacturerSingerCountryUK

Bodywork

Base platformNumber of doors2
Bodywork typeroadsterNumber of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length3850 mm / 151.6 in / 151.6 inTotal (curb) weight840 kg / 1852 lb / 1852 lb
Width1473 mm / 58.0 in / 58.0 inDry weight
Height1232 mm / 48.5 in / 48.5 inLoad capacity
Wheelbase2311 mm / 91.0 in / 91.0 inGross (max.) weight
Track front1187 mm / 46.7 in / 46.7 inTowing weight
Track rear1187 mm / 46.7 in / 46.7 inWeight distribution (front)54.5 % / 54.5 % / 54.5 %
Ground clearanceFuel capacity
Length/wheelbase ratio1.67  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.54 m2 / 16.6 sq ft / 16.6 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders4
Engine Typestraight (inline) Total number of valves8
Engine ManufacturerSingerValves per cylinder2
Engine constructionBore73.0 mm / 2.87 in / 2.87 in
Fuelpetrol (gasoline)Stroke89.4 mm / 3.52 in / 3.52 in
Fuel detailsBore/Stroke ratio0.82
Fuel supply1 So carbEngine displacement1497 cm3 / 91.4 cu in / 91.4 cu in
Engine Main bearingsUnitary capacity374.25 cm3/cylinder / 22.838 cu in/cylinder / 22.838 cu in/cylinder
Cam DesignSOHC (single overhead camshaft)Compression ratio7.0 : 1
SumpMax. output power35.8 kW / 48.0 hp / 48.0 hp at 4200 rpm / 4200 rpm / 4200 rpm
AspirationnaturalMax. torque98.0 N·m / 72.3 lb·ft / 72.3 lb·ft at 2200 rpm / 2200 rpm / 2200 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)12.7 kW / 17.0 hp / 17.0 hp (est.)
CoolantwaterSpecific output23.9 kW/l / 0.525 bhp/cu in / 0.525 bhp/cu in
Catalytic converternoSpecific torque65.5 N·m/l / 0.57 lb·ft/cu in / 0.57 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.87

Performance

Acceleration 0-50 mph (80 km/h)13.70 s / 13.70 s / 13.70 sTop (maximal) speed121 km/h / 75 mph / 75 mph
Acceleration 0-60 mph (97 km/h)20.80 s / 20.80 s / 20.80 sPower-to-weight ratio57.1 kW/ton / 43.3 bhp/ton / 43.3 bhp/ton
Acceleration 0-100 km/hFuel consumption, City (urban)
Acceleration 0-100 mph (160 km/h)Fuel consumption, Road (extra-urban)
Acceleration 80-120 km/h (50-70 mph) in topFuel consumption, Mixed (combined)
Standing ¼mile time Fuel consumption, Euro
Standing kilometer time CO2 emissions
  Range

Chassis

Engine locationfrontEngine alignmentlongitudinal
SteeringSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent, Coil springsSuspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres frontTyres rear
Brakes front2LSBrakes rearGHM
Brake diameter frontBrake diameter rear
Brakes detailsGHMBraked area

Technical specifications and performance data of Singer SM Roadster

Infobox

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(...)

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