The Vespa PK125 was produced from 1982 to 1990 and came in different models including PK125S, Elestart, and Automatica. It featured a single cylinder, 2 stroke engine with a capacity of 121.2cc and a compression ratio of 9.5:1. The carburetor used was Dell’Orto SHB 19/19E, and the cooling system was air cooled with a centrifugal fan. The fuel mixture for the motorcycle was 1:50, and it was started by kick start. The clutch was wet and multiplate, and the transmission was a 4-speed grip-shift with a constant mesh. The maximum power output was 5kW or 6hp. The front and rear brakes were both drums, and the wheels were interchangeable. The dimensions of the motorcycle were length 1675mm, width 700mm, and height 1070mm. The wheelbase was 1175mm, and the ground clearance was 252mm. The dry weight of the motorcycle was 87kg, and the fuel capacity was 6.2L with a reserve of 1.2L. The average fuel consumption was 2.1L/100km, and the top speed was 92km/h. Overall, the Vespa PK125 was a stylish and reliable motorcycle with a long production history.
Technical specifications:
Make Model: Vespa PK125, PK125S, Elestart, Automatica
| Year | 1982 – 90 |
|---|---|
| Engine | Single cylinder, 2 stroke |
| Capacity | 121.2 cc / 7.4 cub in |
| Bore x Stroke | 55 x 51 mm |
| Compression | 9.5:1 |
| Carburetor | Dell’Orto SHB 19/19E |
| Cooling | Air cooled, centrifugal fan |
| Fuel Mixture | 1:50 |
| Starting | Kick start |
| Spark Plug | NGK BR6HS, Marelli CW7N, Champion L86, Bosch W 225 T1 |
| Clutch | Wet, multiplate |
| Max Power | 5 kW / 6 hp |
| Transmission | 4 Speed, grip-shift, constant mesh |
| Gear Ratios | 1st 14.74 / 2nd 19.80 / 3rd 7.06 / 4th 5.31:1 |
| Final Drive | Direct drive |
| Frame | Pressed sheet steel, streamlined monocoque structure |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Wheels | Interchangeable |
| Front Tyre | 3.0 x 10″ |
| Rear Tyre | 3.0 x 10″ |
| Dimensions | Length: 1675 mm / 65.9 in Width: 700 mm / 27.6 in Height: 1070 mm / 42.1 in |
| Wheelbase | 1175 mm / 46.5 in |
| Ground Clearance | 252 mm / 9.9 in |
| Dry Weight | 87 kg / 182 lbs |
| Fuel Capacity | 6.2 L / 1.6 US gal |
| Reserve | 1.2 L / 0.3 US gal |
| Consumption average | 2.1 L/100 km / 48 km/l / 111 US mpg |
| Top Speed | 92 km/h / 57 mph |
| Sources | Vespaclub.org.pl |
