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Bavarian ML 2/2 and Hungarian State Railways series 12
The ML 2/2 was a local railway tank locomotive that was built by Maffei between 1906 and 1908 as an alternative to the more well-known PtL 2/2 by Krauss. Although it was a very small and light locomotive, it was fitte...
| Bavarian ML 2/2 and Hungarian State Railways series 12Remove | |
|---|---|
| Variant | |
| Built | 1906-1908 |
| Manufacturers | Maffei |
| Wheel arrangement | B t |
| Gauge | 1435 mm |
| Length | 6570 mm |
| Service mass | 22000 kg |
| Top speed | 50 km/h |
| Power | |
| Engine |
General
| Property | Bavarian ML 2/2 and Hungarian State Railways series 12Remove |
|---|---|
| Built | 1906-1908 |
| Manufacturers | Maffei |
| Wheel arrangement | 0-4-0T (Four-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Bavarian ML 2/2 and Hungarian State Railways series 12Remove |
|---|---|
| Length | 6.57 m |
| Wheelbase | 2.90 m |
| Empty mass | 17.5 t |
| Service mass | 22 t |
| Adhesion mass | 22 t |
| Rigid wheelbase | 2.90 m |
| Axle load | 11 t |
Boiler
| Property | Bavarian ML 2/2 and Hungarian State Railways series 12Remove |
|---|---|
| Grate area | 0.83 m² |
| Evaporative heating surface | 35.5 m² |
| Superheater surface | 6.5 m² |
| Total heating surface | 42.0 m² |
Power plant
| Property | Bavarian ML 2/2 and Hungarian State Railways series 12Remove |
|---|---|
| Driver diameter | 990 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 265 x 280 mm |
Power
| Property | Bavarian ML 2/2 and Hungarian State Railways series 12Remove |
|---|---|
| Power source | steam |
| Indicated power | 145 kW (197 PS) |
| Top speed | 50 km/h |
| Starting effort | 20.3 kN |
Calculated values
| Property | Bavarian ML 2/2 and Hungarian State Railways series 12Remove |
|---|---|
| Factor of adhesion | 1 : 10.65 |
| Optimal speed | 43 km/h |
| Power-to-weight ratio | 6.6 kW/t |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 10.07 |
| Grate area/Heating surface | 1 : 50.60 |
| Total/Superheater | 1 : 5.46 |
