Vespa P150S / X

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Vespa-P150s-79-03.jpg
Vespa P150S / X
Manufacturer
Production 1978 - 90
Engine
Two stroke single cylinder,
Compression ratio 8.2:1
Top Speed 90 km/h / 56 mph
Ignition Contact breaker and coil
Battery 12V
Transmission 4 Speed, grip-shift, constant mesh
Frame Pressed sheet steel, streamlined monocoque structure
Suspension Front: Trail arm with coil spring and damper
Rear: Coil spring with damper
Brakes Front: 125 mm drum
Rear: 127 mm drum
Front Tire 3.5 x 8"
Rear Tire 3.5 x 8"
Wheelbase 1200 mm / 47.2 in
Weight 98 kg / 216 lbs (dry),
Fuel Capacity 7.5 L / 2.0 US gal
Manuals Service Manual


It could reach a top speed of 90 km/h / 56 mph.

Engine[edit | edit source]

The engine was a Air cooled, forced cooled Two stroke single cylinder,. The engine featured a 8.2:1 compression ratio.

Drive[edit | edit source]

Power was moderated via the Wet, multiplate.

Chassis[edit | edit source]

It came with a 3.5 x 8" front tire and a 3.5 x 8" rear tire. Stopping was achieved via 125 mm drum in the front and a 127 mm drum in the rear. The front suspension was a Trail arm with coil spring and damper while the rear was equipped with a Coil spring with damper. The P150S / X was fitted with a 7.5 L / 2.0 US gal fuel tank. The bike weighed just 98 kg / 216 lbs. The wheelbase was 1200 mm / 47.2 in long.

Photos[edit | edit source]

Vespa P150S / X Vespa P150S / X Vespa P150S / X Vespa P150S / X

Overview[edit | edit source]

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.



Make Model Vespa P150S / P150X
Year 1978 - 90
Engine Type Two stroke single cylinder,
Displacement 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 System 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 Tire 3.5 x 8"
Rear Tire 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

External Links[edit | edit source]