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Vespa 400

(1957 model)

Brief specs of 1957 Vespa 400

2-door 2-seater drophead coupé (convertible coupé), petrol (gasoline) 2-cylinder straight (inline) engine, 394 cm3 / 24.0 cu in / 24.0 cu in, 10.4 kW / 13.9 hp / 13.9 hp @ 4350 rpm / 4350 rpm / 4350 rpm, 27.0 N·m / 19.9 lb·ft / 19.9 lb·ft @ 2200 rpm / 2200 rpm / 2200 rpm, manual 3-speed transmission, rear wheel drive, 83 km/h / 52 mph / 52 mph top speed

units: metric UK US

Basic (general) data

Marque (make)VespaIssued from1957
Model400Issued until
Serie400Number made
Model familyBody construction
Model codeBody designation
ManufacturerVespaCountryFR

Bodywork

Base platformNumber of doors2
Bodywork typedrophead coupé (convertible coupé)Number of seats2
Bodywork designerCargo capacity (volume)
Passenger space (volume)Max. cargo capacity (volume)

Dimensions & Weight

Length2852 mm / 112.3 in / 112.3 inTotal (curb) weight360 kg / 794 lb / 794 lb
Width1270 mm / 50.0 in / 50.0 inDry weight
Height1250 mm / 49.2 in / 49.2 inLoad capacity
Wheelbase1694 mm / 66.7 in / 66.7 inGross (max.) weight
Track front1100 mm / 43.3 in / 43.3 inTowing weight
Track rear1100 mm / 43.3 in / 43.3 inWeight distribution (front)
Ground clearanceFuel capacity
Length/wheelbase ratio1.68  

Aerodynamics

Drag coefficient (Cd, Cx, Cw)Frontal area (A)1.35 m2 / 14.5 sq ft / 14.5 sq ft (est.)
Aerodynamic coefficient (Cd×A)Aerodynamic resistance (Aero horse power) at 100 km/h (62 mph)

Engine

Engine CodeTotal number of cylinders2
Engine Typestraight (inline) Total number of valves
Engine ManufacturerValves per cylinder
Engine constructionBore63.0 mm / 2.48 in / 2.48 in
Fuelpetrol (gasoline)Stroke63.0 mm / 2.48 in / 2.48 in
Fuel detailsBore/Stroke ratio1
Fuel supply1 So carbEngine displacement394 cm3 / 24.0 cu in / 24.0 cu in
Engine Main bearingsUnitary capacity197.00 cm3/cylinder / 12.022 cu in/cylinder / 12.022 cu in/cylinder
Cam DesignCompression ratio6.6 : 1
SumpMax. output power10.4 kW / 13.9 hp / 13.9 hp at 4350 rpm / 4350 rpm / 4350 rpm
AspirationnaturalMax. torque27.0 N·m / 19.9 lb·ft / 19.9 lb·ft at 2200 rpm / 2200 rpm / 2200 rpm
Compressor typeN/AMaximum rpm
IntercoolernoMax. net output (power at the wheels)0.3 kW / 0.5 hp / 0.5 hp (est.)
CoolantairSpecific output26.4 kW/l / 0.580 bhp/cu in / 0.580 bhp/cu in
Catalytic converternoSpecific torque68.5 N·m/l / 0.60 lb·ft/cu in / 0.60 lb·ft/cu in

Transmission

Transmission typemanualNumber of gears3
Wheel driverear wheel driveTop gear (drive) ratio
  Final gear (drive) ratio

Performance

Acceleration 0-50 mph (80 km/h)58.00 s / 58.00 s / 58.00 sTop (maximal) speed83 km/h / 52 mph / 52 mph
Acceleration 0-60 mph (97 km/h)Power-to-weight ratio38.9 kW/ton / 29.5 bhp/ton / 29.5 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 locationrearEngine alignment
Steeringrack & pinionSteering details
Turns lock-to-lockTurning circle
Suspension frontIndependent,SlPi, Trailing arm, Coil springsSuspension rearLive axle, Swinging axlele, Wishbone (A-arm, control arm), Coil springs
Wheels frontWheels rear
Tyres front4.00-16Tyres rear4.00-16
Brakes frontdrumBrakes reardrum
Brake diameter frontBrake diameter rear
Brakes detailsBraked area

Technical specifications and performance data of Vespa 400

Infobox

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(...)

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