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Rolls-Royce logo

Rolls-Royce Phantom I

(1925 model)

Brief specs of 1925 Rolls-Royce Phantom I

4-door 7-seater sedan (saloon), petrol (gasoline) 6-cylinder 12-valve straight (inline) engine, OHV (overhead valve, I-head), 7668 cm3 / 467.9 cu in / 467.9 cu in, 70.8 kW / 94.9 hp / 94.9 hp @ 2750 rpm / 2750 rpm / 2750 rpm, manual 4-speed transmission, rear wheel drive, 145 km/h / 90 mph / 90 mph top speed

units: metric UK US

Basic (general) data

Marque (make)Rolls-RoyceIssued from1925
ModelPhantom IIssued until
SeriePhantomNumber 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

Length5563 mm / 219.0 in / 219.0 inTotal (curb) weight
Width1829 mm / 72.0 in / 72.0 inDry weight
HeightLoad capacity
Wheelbase3658 mm / 144.0 in / 144.0 inGross (max.) weight
Track front1473 mm / 58.0 in / 58.0 inTowing weight
Track rear1473 mm / 58.0 in / 58.0 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.52  

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 cylinders6
Engine Typestraight (inline) Total number of valves12
Engine ManufacturerRolls-RoyceValves per cylinder2
Engine constructionBore108.0 mm / 4.25 in / 4.25 in
Fuelpetrol (gasoline)Stroke140.0 mm / 5.51 in / 5.51 in
Fuel detailsBore/Stroke ratio0.77
Fuel supply1 R-R carbEngine displacement7668 cm3 / 467.9 cu in / 467.9 cu in
Engine Main bearings7Unitary capacity1278.00 cm3/cylinder / 77.988 cu in/cylinder / 77.988 cu in/cylinder
Cam DesignOHV (overhead valve, I-head)Compression ratio
SumpwetMax. output power70.8 kW / 94.9 hp / 94.9 hp at 2750 rpm / 2750 rpm / 2750 rpm
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)28.3 kW / 38.0 hp / 38.0 hp (est.)
CoolantwaterSpecific output9.2 kW/l / 0.203 bhp/cu in / 0.203 bhp/cu in
Catalytic converternoSpecific torque

Transmission

Transmission typemanualNumber of gears4
Wheel driverear wheel driveTop gear (drive) ratio1
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)Top (maximal) speed145 km/h / 90 mph / 90 mph
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
Steeringworm & nutSteering details
Turns lock-to-lockTurning circle
Suspension frontLive axle, Semi-elliptic leaf springsSuspension rearLive axle, Cantilevernt
Wheels front6.75 x 21Wheels rear6.75 x 21
Tyres front7.00 x 21Tyres rear7.00 x 21
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsservo-assistedBraked area

Technical specifications and performance data of Rolls-Royce Phantom I

Infobox

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