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Czechoslovak State Railways class 477.0
For suburban trains, the ČSD developed a tank locomotive with a 4-8-4 wheel arrangement, which was developed using the latest design principles. It was based on the single class 475.0 tank locomotive and the four clas...
General
| Property | Czechoslovak State Railways class 477.0Remove |
|---|---|
| Built | 1950-1955 |
| Manufacturers | Č, KD |
| Wheel arrangement | 4-8-4T (Northern) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Czechoslovak State Railways class 477.0Remove |
|---|---|
| Length | 17.30 m |
| Wheelbase | 14.00 m |
| Rigid wheelbase | 5.80 m |
| Empty weight | 107.7 t |
| Service weight | 130.7 t |
| Adhesive weight | 68.7 t |
| Axle load | 17.2 t |
| Water capacity | 15,000 l |
| Fuel capacity | 7 t (coal) |
Boiler
| Property | Czechoslovak State Railways class 477.0Remove |
|---|---|
| Grate area | 4.3 m² |
| Firebox surface | 17.88 m² |
| Tube heating surface | 188.95 m² |
| Evaporative heating surface | 206.83 m² |
| Superheater surface | 59.6 m² |
| Total heating surface | 266.4 m² |
Power plant
| Property | Czechoslovak State Railways class 477.0Remove |
|---|---|
| Driver diameter | 1,625 mm |
| Boiler pressure | 16 bar |
| Expansion type | simple expansion |
| Cylinders | three, 450 x 680 mm |
Power
| Property | Czechoslovak State Railways class 477.0Remove |
|---|---|
| Power source | steam |
| Indicated power | 1,589 kW (2,160 PS) |
| Top speed | 100 km/h |
| Starting effort | 172.9 kN |
Calculated values
| Property | Czechoslovak State Railways class 477.0Remove |
|---|---|
| Factor of adhesion | 1 : 3.90 |
| Optimal speed | 56 km/h |
| Power-to-weight ratio | 12.2 kW/t |
| Heating Surface Equivalent | 415.4 m² |
| Cylinder volume/HSE | 1 : 780.99 |
| Adhesive weight/Total | 1 : 1.90 |
| Tractive force/Heating surface | 1 : 13.55 |
| Grate area/Heating surface | 1 : 61.96 |
| Firebox/Tube surface | 1 : 10.57 |
| Total/Superheater | 1 : 3.47 |
