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Imperial-Royal State Railways class 270
The kkStB class 270 was a 2-8-0 freight locomotive, developed as a superheated variant of the class 170. The actual design work was carried out by BMMF which would later be situated in Czechoslovakia. As usual for Aus...
General
| Property | Imperial-Royal State Railways class 270Remove |
|---|---|
| Built | 1917-1930 |
| Manufacturers | BMMF, Breitfeld & Danek, ČKD, Adamov, Škoda, Wiener Neustadt, Floridsdorf |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Imperial-Royal State Railways class 270Remove |
|---|---|
| Length | 17.44 m |
| Length loco | 11.02 m |
| Wheelbase | 6.80 m |
| Rigid wheelbase | 2.80 m |
| Total wheelbase | 13.71 m |
| Empty weight | 61.2 t |
| Service weight | 68 t |
| Adhesive weight | 57.3 t |
| Axle load | 14.4 t |
Boiler
| Property | Imperial-Royal State Railways class 270Remove |
|---|---|
| Grate area | 3.87 m² |
| Firebox surface | 13.9 m² |
| Tube heating surface | 169.8 m² |
| Evaporative heating surface | 183.7 m² |
| Superheater surface | 38.3 m² |
| Total heating surface | 222.0 m² |
Power plant
| Property | Imperial-Royal State Railways class 270Remove |
|---|---|
| Driver diameter | 1,258 mm |
| Boiler pressure | 13 bar |
| Expansion type | simple expansion |
| Cylinders | two, 570 x 632 mm |
Power
| Property | Imperial-Royal State Railways class 270Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,050 kW (1,428 PS) |
| Top speed | 60 km/h |
| Starting effort | 180.4 kN |
Calculated values
| Property | Imperial-Royal State Railways class 270Remove |
|---|---|
| Factor of adhesion | 1 : 3.12 |
| Optimal speed | 35 km/h |
| Power-to-weight ratio | 15.4 kW/t |
| Heating Surface Equivalent | 329.8 m² |
| Cylinder volume/HSE | 1 : 977.99 |
| Adhesive weight/Total | 1 : 1.19 |
| Tractive force/Heating surface | 1 : 16.97 |
| Grate area/Heating surface | 1 : 57.36 |
| Firebox/Tube surface | 1 : 12.22 |
| Total/Superheater | 1 : 4.80 |
