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American Underslung Roadster

(1907 model)

Brief specs of 1907 American Underslung Roadster

2-door 2-seater roadster, petrol (gasoline) 4-cylinder 8-valve straight (inline) engine, side valves (flathead, L-block, L-head), 8200 cm3 / 500.4 cu in / 500.4 cu in, manual 4-speed transmission, rear wheel drive

units: metric UK US

Basic (general) data

Marque (make)American UnderslungIssued from1907
ModelRoadsterIssued until
SerieRoadsterNumber made
Model familyBody construction
Model codeBody designation
ManufacturerAmerican UnderslungCountryUS

Bodywork

Base platformNumber of doors2
Bodywork typeroadsterNumber of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

LengthTotal (curb) weight
WidthDry weight
HeightLoad capacity
Wheelbase2794 mm / 110.0 in / 110.0 inGross (max.) weight
Track frontTowing weight
Track rearWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio  

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 ManufacturerTeetor-HartleyValves per cylinder2
Engine constructionBore136.0 mm / 5.35 in / 5.35 in
Fuelpetrol (gasoline)Stroke139.0 mm / 5.47 in / 5.47 in
Fuel detailsBore/Stroke ratio0.98
Fuel supplyEngine displacement8200 cm3 / 500.4 cu in / 500.4 cu in
Engine Main bearingsUnitary capacity2050.00 cm3/cylinder / 125.099 cu in/cylinder / 125.099 cu in/cylinder
Cam Designside valves (flathead, L-block, L-head)Compression ratio
SumpMax. output power at
AspirationnaturalMax. torque at
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)
CoolantwaterSpecific output
Catalytic converternoSpecific torque

Transmission

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

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 frontSuspension rear
Wheels frontWheels rear
Tyres frontTyres rear
Brakes frontBrakes rearmechanical
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of American Underslung Roadster

Infobox

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