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Bosnian-Herzegovinian Railway class IVa5
After several locomotives had been built in smaller numbers for the narrow-gauge lines in Austria-Hungary, the breakthrough as a standard locomotive was achieved with the IVa5. It was built as a tender locomotive with...
General
| Property | Bosnian-Herzegovinian Railway class IVa5 superheated |
|---|---|
| Built | 1903-1949 |
| Manufacturers | Krauss Linz, MÁVAG, Jung, Đ, uro Đ, aković |
| Wheel arrangement | 0-8-2 (River Irt) |
| Gauge | 760 mm (Bosnian gauge); 1,000 mm (Meter gauge) |
Dimensions and weights
| Property | Bosnian-Herzegovinian Railway class IVa5 superheated |
|---|---|
| Length | 13.70 m |
| Service weight | 38 t |
| Adhesive weight | 32.5 t |
| Total weight | 54 t |
Boiler
| Property | Bosnian-Herzegovinian Railway class IVa5 superheated |
|---|---|
| Grate area | 1.7 m² |
| Firebox surface | 6.4 m² |
| Tube heating surface | 81.8 m² |
| Evaporative heating surface | 88.2 m² |
| Superheater surface | 24.88 m² |
| Total heating surface | 113.1 m² |
Power plant
| Property | Bosnian-Herzegovinian Railway class IVa5 superheated |
|---|---|
| Driver diameter | 900 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 430 x 450 mm |
Power
| Property | Bosnian-Herzegovinian Railway class IVa5 superheated |
|---|---|
| Power source | steam |
| Estimated power | 450 kW (612 PS) |
| Top speed | 35 km/h |
| Starting effort | 94.3 kN |
Calculated values
| Property | Bosnian-Herzegovinian Railway class IVa5 superheated |
|---|---|
| Factor of adhesion | 1 : 3.38 |
| Optimal speed | 29 km/h |
| Power-to-weight ratio | 11.8 kW/t |
| Heating Surface Equivalent | 170.0 m² |
| Cylinder volume/HSE | 1 : 768.99 |
| Adhesive weight/Total | 1 : 1.17 |
| Tractive force/Heating surface | 1 : 17.42 |
| Grate area/Heating surface | 1 : 66.52 |
| Firebox/Tube surface | 1 : 12.78 |
| Total/Superheater | 1 : 3.55 |
