Vespa 150 S & P150X

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

Vespa P series was the last of the "classic" Vespas to come out of Piaggio's factories. though certainly not the most elegant styling, the P-series Vespas are probably the sturdiest models.

In the mid-70s the basic Vespa design had been refined almost as far as it was able to go. However, changing consumer tastes, and new technologies, coupled with tightened regulations meant that Piaggio realised that it was time to totally re-design the Vespa chassis. The result was the P-series. It was such a large break from the previous style and design philosophy that many hard-core scooterists did not consider the P-series to be true Vespas, even well into the 90's. It is a debate that still continues, though the influx of new automatic scooters has tempered it and helped propel the P-series into the ranks of the classics.

On the P everything was bigger. the frame was newly designed and h=physically much larger than nay of the previous models. The cowls were more angular.

Vespa P150S / P150X