Comparison of Lambretta 150D Series 3 and Lambretta 150D Series 2 1955 [S]ave
| Attribute |  Lambretta 150D Series 3 × | Lambretta 150D Series 2 1955 × |
|---|---|---|
| General | ||
| Production from (year) | 1956 | 1955 |
| Make | Lambretta | Lambretta |
| Model | Lambretta 150D Series 3 | Lambretta 150D Series 2 |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. DellÓrto | Carburettor. DellÓrto |
| Displacement (cm³) | 150 | 150 |
| Power (kw) | 4.4 | 4.4 |
| Cooling system | Air | Air |
| Bore (mm) | 57 | 57 |
| Stroke (mm) | 58 | 58 |
| Gearbox | 3-speed | 3-speed |
| Ignition | Contact breaker and points | Contact breaker and points |
| Clutch | 3 speed- hand changed | 3 speed- hand changed |
| Lubrication system | 6% | 5% |
| Compression | 6.5:1 | 6.5:1 |
| Chassis | ||
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Tubular steel | Tubular steel |
| Front tyre | 4-8 | 4-8 |
| Rear tyre | 4-8 | 4-8 |
| Seat | Dual seat | Dual seat |
| Other | ||
| Starter | Electric | Electric |
| Dimensions | ||
| Dry weight (kg) | 74 | 74 |
| Power/weight ratio | 0.0588 | 0.0588 |
| Performance | ||
| Top speed (km/h) | 78 | 78 |
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