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Alvis 12/50 SA

(1923 model)

Brief specs of 1923 Alvis 12/50 SA

2-seater roadster, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, OHV (overhead valve, I-head), 1496 cm3 / 91.3 cu in / 91.3 cu in, 37.3 kW / 50.0 hp / 50.0 hp @ 4000 rpm / 4000 rpm / 4000 rpm, manual 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)AlvisIssued from1923
Model12/50 SAIssued until
Serie12Number made
Model familyBody construction
Model codeBody designation
ManufacturerAlvisCountryUK

Bodywork

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

Dimensions & Weight

Length3886 mm / 153.0 in / 153.0 inTotal (curb) weight
Width1511 mm / 59.5 in / 59.5 inDry weight
HeightLoad capacity
Wheelbase2756 mm / 108.5 in / 108.5 inGross (max.) weight
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.41  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)
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 ManufacturerAlvisValves per cylinder2
Engine constructionBore68.0 mm / 2.68 in / 2.68 in
Fuelpetrol (gasoline)Stroke103.0 mm / 4.06 in / 4.06 in
Fuel detailsBore/Stroke ratio0.66
Fuel supply1 So carbEngine displacement1496 cm3 / 91.3 cu in / 91.3 cu in
Engine Main bearingsUnitary capacity374.00 cm3/cylinder / 22.823 cu in/cylinder / 22.823 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio5.3 : 1
SumpMax. output power37.3 kW / 50.0 hp / 50.0 hp at 4000 rpm / 4000 rpm / 4000 rpm
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)14.9 kW / 20.0 hp / 20.0 hp (est.)
CoolantwaterSpecific output24.9 kW/l / 0.548 bhp/cu in / 0.548 bhp/cu in
Catalytic converternoSpecific torque

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio4.3

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio
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 frontLive axle, Semi-elliptic leaf 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 Alvis 12/50 SA

Infobox

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