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Armstrong Siddeley Sapphire 346 Limousine

(1955 model)

Brief specs of 1955 Armstrong Siddeley Sapphire 346 Limousine

4-door 7-seater limousine, petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OHV (overhead valve, I-head), 3435 cm3 / 209.6 cu in / 209.6 cu in, 93.2 kW / 125.0 hp / 125.0 hp @ 4700 rpm / 4700 rpm / 4700 rpm, 247.0 N·m / 182.2 lb·ft / 182.2 lb·ft @ 2000 rpm / 2000 rpm / 2000 rpm, manual 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)Armstrong SiddeleyIssued from1955
ModelSapphire 346 LimousineIssued until
SerieSapphireNumber made
Model familyBody construction
Model codeBody designation
ManufacturerArmstrong SiddeleyCountryUK

Bodywork

Base platformNumber of doors4
Bodywork typelimousineNumber of seats7
Bodywork designerCargo capacity (volume)
Passenger space (volume)5290 l / 186.81 cu ft / 186.81 cu ftMax. cargo capacity (volume)

Dimensions & Weight

Length5385 mm / 212.0 in / 212.0 inTotal (curb) weight1830 kg / 4034 lb / 4034 lb
Width1830 mm / 72.0 in / 72.0 inDry weight
Height1676 mm / 66.0 in / 66.0 inLoad capacity
Wheelbase3378 mm / 133.0 in / 133.0 inGross (max.) weight
Track front1438 mm / 56.6 in / 56.6 inTowing weight
Track rear1460 mm / 57.5 in / 57.5 inWeight distribution (front)
Ground clearanceFuel capacity72 l / 15.8 UK gal / 19.0 US gal
Length/wheelbase ratio1.59  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.61 m2 / 28.1 sq ft / 28.1 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 constructionBore90.0 mm / 3.54 in / 3.54 in
Fuelpetrol (gasoline)Stroke90.0 mm / 3.54 in / 3.54 in
Fuel detailsBore/Stroke ratio1
Fuel supply1 St carbEngine displacement3435 cm3 / 209.6 cu in / 209.6 cu in
Engine Main bearingsUnitary capacity572.50 cm3/cylinder / 34.936 cu in/cylinder / 34.936 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio7.0 : 1
SumpMax. output power93.2 kW / 125.0 hp / 125.0 hp at 4700 rpm / 4700 rpm / 4700 rpm
AspirationnaturalMax. torque247.0 N·m / 182.2 lb·ft / 182.2 lb·ft at 2000 rpm / 2000 rpm / 2000 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)37.3 kW / 50.0 hp / 50.0 hp (est.)
CoolantwaterSpecific output27.1 kW/l / 0.596 bhp/cu in / 0.596 bhp/cu in
Catalytic converternoSpecific torque71.9 N·m/l / 0.63 lb·ft/cu in / 0.63 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.45

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio68.3 kW/ton / 51.8 bhp/ton / 51.8 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 346 Limousine

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