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Armstrong Siddeley Sapphire 236

(1955 model)

Brief specs of 1955 Armstrong Siddeley Sapphire 236

4-door 5-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OHV (overhead valve, I-head), 2309 cm3 / 140.9 cu in / 140.9 cu in, 63.4 kW / 85.0 hp / 85.0 hp @ 4500 rpm / 4500 rpm / 4500 rpm, 160.0 N·m / 118.0 lb·ft / 118.0 lb·ft @ 1750 rpm / 1750 rpm / 1750 rpm, manual 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)Armstrong SiddeleyIssued from1955
ModelSapphire 236Issued until
SerieSapphireNumber made
Model familyBody construction
Model codeBody designation
ManufacturerArmstrong SiddeleyCountryUK

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats5
Bodywork designerCargo capacity (volume)
Passenger space (volume)4860 l / 171.63 cu ft / 171.63 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length4572 mm / 180.0 in / 180.0 inTotal (curb) weight1360 kg / 2998 lb / 2998 lb
Width1740 mm / 68.5 in / 68.5 inDry weight
Height1568 mm / 61.7 in / 61.7 inLoad capacity
Wheelbase2819 mm / 111.0 in / 111.0 inGross (max.) weight
Track front1400 mm / 55.1 in / 55.1 inTowing weight
Track rear1378 mm / 54.3 in / 54.3 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.62  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.32 m2 / 25.0 sq ft / 25.0 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders6
Engine Typestraight (inline) (Inline, 6 cylinder)Total number of valves12
Engine ManufacturerValves per cylinder2
Engine constructionBore70.0 mm / 2.76 in / 2.76 in
Fuelpetrol (gasoline)Stroke100.0 mm / 3.94 in / 3.94 in
Fuel detailsBore/Stroke ratio0.7
Fuel supply1 St carbEngine displacement2309 cm3 / 140.9 cu in / 140.9 cu in
Engine Main bearingsUnitary capacity384.83 cm3/cylinder / 23.484 cu in/cylinder / 23.484 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio7.5 : 1
SumpMax. output power63.4 kW / 85.0 hp / 85.0 hp at 4500 rpm / 4500 rpm / 4500 rpm
AspirationnaturalMax. torque160.0 N·m / 118.0 lb·ft / 118.0 lb·ft at 1750 rpm / 1750 rpm / 1750 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)25.4 kW / 34.0 hp / 34.0 hp (est.)
CoolantwaterSpecific output27.5 kW/l / 0.603 bhp/cu in / 0.603 bhp/cu in
Catalytic converternoSpecific torque69.3 N·m/l / 0.61 lb·ft/cu in / 0.61 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio0.77
  Final gear (drive) ratio4.54

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio62.5 kW/ton / 47.4 bhp/ton / 47.4 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 frontBrakes rear
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Armstrong Siddeley Sapphire 236

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