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Rolls-Royce Silver Dawn

(1951 model)

Brief specs of 1951 Rolls-Royce Silver Dawn

4-door 7-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OISE (overhead inlet, side exhaust valve), 4566 cm3 / 278.6 cu in / 278.6 cu in, manual 4-speed transmission, rear wheel drive, 139 km/h / 86 mph / 86 mph top speed

units: metric UK US

Basic (general) data

Marque (make)Rolls-RoyceIssued from1951
ModelSilver DawnIssued until
SerieSilver DawnNumber made
Model familyBody construction
Model codeBody designation
ManufacturerRolls-Royce Motor CarsCountryUK

Bodywork

Base platformNumber of doors4
Bodywork typesedan (saloon)Number of seats7
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length5168 mm / 203.5 in / 203.5 inTotal (curb) weight1880 kg / 4145 lb / 4145 lb
Width1778 mm / 70.0 in / 70.0 inDry weight
Height1676 mm / 66.0 in / 66.0 inLoad capacity
Wheelbase3048 mm / 120.0 in / 120.0 inGross (max.) weight
Track front1442 mm / 56.8 in / 56.8 inTowing weight
Track rear1486 mm / 58.5 in / 58.5 inWeight distribution (front)48.5 % / 48.5 % / 48.5 %
Ground clearanceFuel capacity108 l / 23.8 UK gal / 28.5 US gal
Length/wheelbase ratio1.7  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)2.34 m2 / 25.2 sq ft / 25.2 sq ft
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 ManufacturerRolls-RoyceValves per cylinder2
Engine constructionBore92.0 mm / 3.62 in / 3.62 in
Fuelpetrol (gasoline)Stroke114.3 mm / 4.50 in / 4.50 in
Fuel detailsBore/Stroke ratio0.8
Fuel supply1 Ze carbEngine displacement4566 cm3 / 278.6 cu in / 278.6 cu in
Engine Main bearingsUnitary capacity761.00 cm3/cylinder / 46.439 cu in/cylinder / 46.439 cu in/cylinder
Cam DesignOISE (overhead inlet, side exhaust valve)Compression ratio6.8 : 1
SumpwetMax. output power at
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)48.4 kW / 64.9 hp / 64.9 hp (est.)
CoolantwaterSpecific output
Catalytic converternoSpecific torque

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio3.73

Performance

Acceleration 0-50 mph (80 km/h)11.40 s / 11.40 s / 11.40 sTop (maximal) speed139 km/h / 86 mph / 86 mph
Acceleration 0-60 mph (97 km/h)16.20 s / 16.20 s / 16.20 sPower-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 frontIndependent, Coil springsSuspension rearLive axle, Semi-elliptic leaf springs
Wheels frontWheels rear
Tyres front7.50-16Tyres rear7.50-16
Brakes frontLTBrakes rearLT
Brake diameter frontBrake diameter rear
Brakes detailshydraulic/mechanical hybrid system, ABS (anti-lock braking system)Braked area

Technical specifications and performance data of Rolls-Royce Silver Dawn

Infobox

The Varying Drivers License Requirements Around the World

Minimum driving ages, the number of passengers young drivers can have with them at any time, the times of day that drivers under the age of 18 can drive…

These all vary depending on where young motorists are driving. They vary, even, across the United States.

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And that’s just one example of the differences in driving license requirements from one part of the country to the next. The differences are even more pronounced when comparing one country to another. Minimum driving ages vary widely across the world. While most states in the United States allow youngsters to earn their learner’s permits at the age of 15, many other countries require their residents to be much older before they get behind the wheel of a car.

(...)

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