Vespa 150 S & P150X (1978-90)

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.

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Technical specifications:

Make Model: Vespa P150S / P150X

Year: 1978 – 90

Engine: Two stroke single cylinder,

Capacity: 149 cc / 9.1 cub in

Bore x Stroke: 57.8 x 57 mm

Compression: 8.2:1

Carburetor: Dell’Orto SI 20/20 D

Cooling: Air cooled, forced

Fuel Mixture: 1:50

Ignition: Contact breaker and coil

Starting: Kick start

Battery: 12V

Clutch: Wet, multiplate

Max Power: 5.5 kW / 7.5 hp @ 5750 rpm

Transmission: 4 Speed, grip-shift, constant mesh

Gear Ratios: 1st 14.47 / 2nd 10.28 / 3rd 7.31 / 4th 5.36:1

Final Drive: Direct drive

Frame: Pressed sheet steel, streamlined monocoque structure

Front Suspension: Trail arm with coil spring and damper

Rear Suspension: Coil spring with damper

Front Brakes: 125 mm drum

Rear Brakes: 127 mm drum

Wheels: Interchangeable

Front Tyre: 3.5 x 8″

Rear Tyre: 3.5 x 8″

Dimensions: Length: 1740 mm / 68.5 in Width: 670 mm / 26.4 in

Wheelbase: 1200 mm / 47.2 in

Dry Weight: 98 kg / 216 lbs

Fuel Capacity: 7.5 L / 2.0 US gal

Consumption average: 2.1 L/100 km / 48 km/l / 112 US mpg

Acceleration: 0 – 75 km/h / 47 mph: 17.5 sec

Top Speed: 90 km/h / 56 mph

Colours: Blue, Blue/Green, Silver, White

Sources: Wikipedia, Scooterhelp.com, Scooterlounge.com