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United Swiss Railways B 3/4
The first compound locomotives ordered by the VSB were ten express locomotives from the years 1890 to 1897. They had the wheel arrangement 2-6-0 and were designated A3T by the VSB, but are better known under their lat...
| United Swiss Railways B 3/4Remove | |
|---|---|
| Variant | 1890 variant |
| Built | 1890-1897 |
| Manufacturers | SLM |
| Wheel arrangement | 1C |
| Gauge | 1435 mm |
| Length | 13379 mm |
| Service mass | |
| Top speed | 75 km/h |
| Power | |
| Engine |
General
| Property | United Swiss Railways B 3/41890 variant |
|---|---|
| Built | 1890-1897 |
| Manufacturers | SLM |
| Wheel arrangement | 2-6-0 (Mogul) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | United Swiss Railways B 3/41890 variant |
|---|---|
| Length | 13.38 m |
| Wheelbase | 6.00 m |
| Total mass | 74.6 t |
| Rigid wheelbase | 3.52 m |
| Axle load | 12.7 t |
| Water capacity | 9,600 l |
| Fuel capacity | 4 t (coal) |
Boiler
| Property | United Swiss Railways B 3/41890 variant |
|---|---|
| Grate area | 1.7 m² |
| Firebox surface | 7.7 m² |
| Tube heating surface | 130.9 m² |
| Evaporative heating surface | 138.6 m² |
| Total heating surface | 138.6 m² |
Power plant
| Property | United Swiss Railways B 3/41890 variant |
|---|---|
| Driver diameter | 1,590 mm |
| Boiler pressure | 12 bar |
| Expansion type | compound |
| Cylinders | two, HP: 450 x 650 mm and LP: 640 x 650 mm |
Power
| Property | United Swiss Railways B 3/41890 variant |
|---|---|
| Power source | steam |
| Indicated power | 515 kW (700 PS) |
| Top speed | 75 km/h |
| Starting effort | 56.5 kN |
| Starting effort simple | 67.8 kN |
Calculated values
| Property | United Swiss Railways B 3/41890 variant |
|---|---|
| Optimal speed | 56 km/h |
| Power-to-weight ratio | 6.9 kW/t |
| Heating Surface Equivalent | 177.1 m² |
| Cylinder volume/HSE | 1 : 1,174.08 |
| Tractive force/Heating surface | 1 : 8.51 |
| Grate area/Heating surface | 1 : 81.53 |
| Firebox/Tube surface | 1 : 17.00 |
