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Vespa Specifications

Vespa 150 S & P150X (1978-90)

Entry updated

Vespa 150 S & P150X (1978-90)

At a glance

Capacity
149 cc / 9.1 cub in
Power
5.5 kW / 7.5 hp @ 5750 rpm

The full picture.

The Vespa P150S/P150X motorcycle was produced from 1978 to 1990. It has a 149cc, two-stroke single cylinder engine with a compression of 8.2:1 and a Dell’Orto SI 20/20 D carburetor. The motorcycle is air cooled, forced and runs on a 1:50 fuel mixture. The ignition is via contact breaker and coil, with a kick start and 12V battery. The clutch is a wet, multiplate and the transmission is a 4 speed, grip-shift, constant mesh. The frame is pressed sheet steel and has a streamlined monocoque structure. The front suspension is a trail arm with a coil spring and damper, while the rear suspension is a coil spring with damper. The front and rear brakes are 125mm and 127mm drums respectively. The wheels are interchangeable with a front and rear tire size of 3.5 x 8 inches. The motorcycle has a length of 1740mm, width of 670mm, and a wheelbase of 1200mm. The dry weight is 98kg and it has a fuel capacity of 7.5L. The motorcycle has an average consumption of 2.1L/100km and an acceleration of 0-75km/h in 17.5 seconds. The top speed is 90km/h and it comes in blue, blue/green, silver, and white colours. Sources for this information include Wikipedia, Scooterhelp.com, and Scooterlounge.com.


Technical specifications:

Make Model: Vespa P150S / P150X

Motorcycle technical specifications
Year1978 – 90
EngineTwo stroke single cylinder,
Capacity149 cc / 9.1 cub in
Bore x Stroke57.8 x 57 mm
Compression8.2:1
CarburetorDell’Orto SI 20/20 D
CoolingAir cooled, forced
Fuel Mixture1:50
IgnitionContact breaker and coil
StartingKick start
Battery12V
ClutchWet, multiplate
Max Power5.5 kW / 7.5 hp @ 5750 rpm
Transmission4 Speed, grip-shift, constant mesh
Gear Ratios1st 14.47 / 2nd 10.28 / 3rd 7.31 / 4th 5.36:1
Final DriveDirect drive
FramePressed sheet steel, streamlined monocoque structure
Front SuspensionTrail arm with coil spring and damper
Rear SuspensionCoil spring with damper
Front Brakes125 mm drum
Rear Brakes127 mm drum
WheelsInterchangeable
Front Tyre3.5 x 8″
Rear Tyre3.5 x 8″
DimensionsLength: 1740 mm / 68.5 in Width: 670 mm / 26.4 in
Wheelbase1200 mm / 47.2 in
Dry Weight98 kg / 216 lbs
Fuel Capacity7.5 L / 2.0 US gal
Consumption average2.1 L/100 km / 48 km/l / 112 US mpg
Acceleration0 – 75 km/h / 47 mph: 17.5 sec
Top Speed90 km/h / 56 mph
ColoursBlue, Blue/Green, Silver, White
SourcesWikipedia, Scooterhelp.com, Scooterlounge.com