Adler Junior M100 (1955) vs Vespa PK 50 N Speedmatic (1992-96)
Comparison technical specifications
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| Make: | Adler | Vespa |
| Model: | Junior M100 | PK 50 N Speedmatic |
| Years: | 1955 | 1992-96 |
| Engine: | 1 cylinder, 2 stroke | Two stroke, single cylinder |
| Capacity: | 98 cc / 6 cub in. | 49.8 cc / 3.0 cub in |
| Bore x Stroke: | 50 x 50 mm | 38.4 x 43 mm |
| Cooling: | Air cooled | Air cooled with centrifugal fan |
| Clutch: | Multi plate, wet, cable operated | Oil bath, multi plate |
| Starting: | Electric | Kick start |
| Ignition: | Magneto | Flywheel magneto |
| Max Power: | 2.8 kW / 3.75 hp | 2.7 kW / 3.7 Hp @ 7000 rpm |
| Compression Ratio: | 1: 5.75 | 9.1:1 |
| Transmission: | 3 Speed gearbox, foot changes | 4 Speed, grip shift |
| Final Drive: | Chain | Direct drive |
| Frame: | Double cradle steel frame | Pressed sheet steel with streamlined monocoque structure |
| Front suspension: | Leading link | Trailing arm, coil spring, damper |
| Rear suspension: | Twon shock, plunger | Coil spring, damper |
| Fuel Capacity: | 7 L / 1.8 US gal | 6.2 L / 1.6 US gal |
| Top Speed: | 70 km/h / 43.5 mph | 70 km/h / 43.5 mph |