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Hungarian State Railways MIa
The Mla was a small tank locomotive for passenger service on branch lines with a low axle load limit. It was developed from the MI, but was lighter with smaller cylinders and now had its single powered axle in the rea...
| Hungarian State Railways MIaRemove | |
|---|---|
| Variant | |
| Built | 1910, 1913 |
| Manufacturers | MÁVAG |
| Wheel arrangement | 1A t |
| Gauge | 1435 mm |
| Length | 5424 mm |
| Service mass | 19130 kg |
| Top speed | 60 km/h |
| Power | |
| Engine |
General
| Property | Hungarian State Railways MIaRemove |
|---|---|
| Built | 1910, 1913 |
| Manufacturers | MÁVAG |
| Wheel arrangement | 2-2-0T |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Hungarian State Railways MIaRemove |
|---|---|
| Length | 5.42 m |
| Wheelbase | 3.10 m |
| Service mass | 19.1 t |
| Adhesion mass | 9.6 t |
| Rigid wheelbase | 3.10 m |
| Axle load | 9.6 t |
| Water capacity | 2,000 l |
| Fuel capacity | 0.7 t (coal) |
Boiler
| Property | Hungarian State Railways MIaRemove |
|---|---|
| Grate area | 0.78 m² |
| Firebox surface | 5.03 m² |
| Tube heating surface | 25.82 m² |
| Evaporative heating surface | 30.85 m² |
| Total heating surface | 30.9 m² |
Power plant
| Property | Hungarian State Railways MIaRemove |
|---|---|
| Driver diameter | 1,040 mm |
| Boiler pressure | 16 bar |
| Expansion type | compound |
| Cylinders | two, HP: 220 x 400 mm and LP: 330 x 400 mm |
Power
| Property | Hungarian State Railways MIaRemove |
|---|---|
| Power source | steam |
| Indicated power | 138 kW (188 PS) |
| Top speed | 60 km/h |
| Starting effort | 17.5 kN |
| Starting effort simple | 21.0 kN |
Calculated values
| Property | Hungarian State Railways MIaRemove |
|---|---|
| Factor of adhesion | 1 : 5.38 |
| Optimal speed | 48 km/h |
| Power-to-weight ratio | 7.2 kW/t |
| Heating Surface Equivalent | 56.0 m² |
| Cylinder volume/HSE | 1 : 576.99 |
| Adhesive weight/Total | 1 : 1.99 |
| Tractive force/Heating surface | 1 : 11.87 |
| Grate area/Heating surface | 1 : 39.55 |
| Firebox/Tube surface | 1 : 5.13 |
