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Finnish Railway series H8
With the increasing weights of long range passenger trains in the time before World War I, the VR introduced a new class of 4-6-0 locomotives in 1915. It was called H8 and had a larger superheater and larger cylinders...
| Finnish Railway series H8Remove | |
|---|---|
| Variant | Standard |
| Built | 1915-1916, 1920-1921 |
| Manufacturers | Tampella;Lokomo |
| Wheel arrangement | 2C |
| Gauge | 1520 mm |
| Length | 15814 mm |
| Service mass | 54600 kg |
| Top speed | 95 km/h |
| Power | |
| Engine |
General
| Property | Finnish Railway series H8 Standard Remove |
|---|---|
| Built | 1915-1916, 1920-1921 |
| Manufacturers | Tampella, Lokomo |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,520 mm |
Dimensions and weights
| Property | Finnish Railway series H8 Standard Remove |
|---|---|
| Length | 15.81 m |
| Service mass | 54.6 t |
| Adhesion mass | 37 t |
| Total mass | 87.9 t |
| Axle load | 12.4 t |
| Water capacity | 14,300 l |
| Fuel capacity | 3.5 t (coal) |
Boiler
| Property | Finnish Railway series H8 Standard Remove |
|---|---|
| Grate area | 1.9 m² |
| Evaporative heating surface | 108.6 m² |
| Superheater surface | 30.7 m² |
| Total heating surface | 139.3 m² |
Power plant
| Property | Finnish Railway series H8 Standard Remove |
|---|---|
| Driver diameter | 1,750 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 510 x 600 mm |
Power
| Property | Finnish Railway series H8 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 700 kW (952 PS) |
| Top speed | 95 km/h |
| Starting effort | 91.0 kN |
Calculated values
| Property | Finnish Railway series H8 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.99 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 12.8 kW/t |
| Adhesive weight/Total | 1 : 1.48 |
| Tractive force/Heating surface | 1 : 13.64 |
| Grate area/Heating surface | 1 : 73.32 |
| Total/Superheater | 1 : 3.54 |
