Comparison of Lambretta 125B 1951 and Lambretta 125D Series 2 1954 [S]ave
| Attribute |  Lambretta 125D Series 2 1954 × |  Lambretta 125B 1951 × |
|---|---|---|
| General | ||
| Production from (year) | 1954 | 1951 |
| Make | Lambretta | Lambretta |
| Model | Lambretta 125D Series 2 | Lambretta 125B |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. DellÓrto | Carburettor. DellÓrto MA 16 |
| Displacement (cm³) | 123 | 123 |
| Power (kw) | 3.6 | 3.1 |
| Cooling system | Air | Air |
| Bore (mm) | 52 | 52 |
| 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 | 5% | 5% |
| Compression | 6.5:1 | 6.1:1 |
| 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) | 69 | 69 |
| Power/weight ratio | 0.0515 | 0.0443 |
| Performance | ||
| Top speed (km/h) | 72 | 67 |
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