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Hungarian State Railways IIIu
The MÁV series IIIu is among the most successful 2-6-2 tender locomotives . Despite a driver diameter of only 1,440 mm and a top speed of 75 km/h, it was also used in express service. Production started at MÁVAG in 19...
| Hungarian State Railways IIIuRemove | |
|---|---|
| Variant | superheated |
| Built | 1909-1923 |
| Manufacturers | MÁVAG |
| Wheel arrangement | 1C1 |
| Gauge | 1435 mm |
| Length | 17534 mm |
| Service mass | 60110 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Hungarian State Railways IIIusuperheated |
|---|---|
| Built | 1909-1923 |
| Manufacturers | MÁVAG |
| Wheel arrangement | 2-6-2 (Prairie) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Hungarian State Railways IIIusuperheated |
|---|---|
| Length | 17.53 m |
| Length loco | 10.97 m |
| Wheelbase | 8.31 m |
| Total wheelbase | 14.24 m |
| Empty mass | 53.9 t |
| Service mass | 60.1 t |
| Adhesion mass | 42.3 t |
| Rigid wheelbase | 3.50 m |
| Axle load | 14.1 t |
Boiler
| Property | Hungarian State Railways IIIusuperheated |
|---|---|
| Grate area | 3.15 m² |
| Firebox surface | 11.24 m² |
| Tube heating surface | 160.37 m² |
| Evaporative heating surface | 171.61 m² |
| Superheater surface | 36.7 m² |
| Total heating surface | 208.3 m² |
Power plant
| Property | Hungarian State Railways IIIusuperheated |
|---|---|
| Driver diameter | 1,440 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 510 x 650 mm |
Power
| Property | Hungarian State Railways IIIusuperheated |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 119.8 kN |
Calculated values
| Property | Hungarian State Railways IIIusuperheated |
|---|---|
| Factor of adhesion | 1 : 3.46 |
| Optimal speed | 42 km/h |
| Power-to-weight ratio | 13.6 kW/t |
| Heating Surface Equivalent | 301.2 m² |
| Cylinder volume/HSE | 1 : 881.67 |
| Adhesive weight/Total | 1 : 1.42 |
| Tractive force/Heating surface | 1 : 12.01 |
| Grate area/Heating surface | 1 : 66.13 |
| Firebox/Tube surface | 1 : 14.27 |
| Total/Superheater | 1 : 4.68 |
