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Finnish Railway series G1, G2 and G4 “Pikku-Rusko”
These locomotives were built from 1884 by the Swiss SLM for the Finnish State Railways. They were intended for mixed service and were called “Pikku-Rusko”, which means “Little Brown”. Since only low axle loads and a m...
General
| Property | Finnish Railway series G1, G2 and G4 “Pikku-Rusko”Remove |
|---|---|
| Built | 1884-1896 |
| Manufacturers | SLM |
| Wheel arrangement | 2-6-0 (Mogul) |
| Gauge | 1,520 mm (Russian broad gauge) |
Dimensions and weights
| Property | Finnish Railway series G1, G2 and G4 “Pikku-Rusko”Remove |
|---|---|
| Length | 12.80 m |
| Wheelbase | 5.70 m |
| Rigid wheelbase | 3.67 m |
| Service weight | 26.6 t |
| Adhesive weight | 21.1 t |
| Axle load | 7.5 t |
| Total weight | 40.4 t |
| Water capacity | 5,000 l |
| Fuel capacity | 6 t (wood) |
Boiler
| Property | Finnish Railway series G1, G2 and G4 “Pikku-Rusko”Remove |
|---|---|
| Grate area | 1.11 m² |
| Firebox surface | 6.6 m² |
| Tube heating surface | 61.68 m² |
| Evaporative heating surface | 68.28 m² |
| Total heating surface | 68.3 m² |
Power plant
| Property | Finnish Railway series G1, G2 and G4 “Pikku-Rusko”Remove |
|---|---|
| Driver diameter | 1,245 mm |
| Boiler pressure | 10.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 380 x 510 mm |
Power
| Property | Finnish Railway series G1, G2 and G4 “Pikku-Rusko”Remove |
|---|---|
| Power source | steam |
| Estimated power | 170 kW (231 PS) |
| Top speed | 60 km/h |
| Starting effort | 51.8 kN |
Calculated values
| Property | Finnish Railway series G1, G2 and G4 “Pikku-Rusko”Remove |
|---|---|
| Factor of adhesion | 1 : 4.00 |
| Optimal speed | 19 km/h |
| Power-to-weight ratio | 6.4 kW/t |
| Heating Surface Equivalent | 101.3 m² |
| Cylinder volume/HSE | 1 : 1,142.18 |
| Adhesive weight/Total | 1 : 1.26 |
| Tractive force/Heating surface | 1 : 15.84 |
| Grate area/Heating surface | 1 : 61.51 |
| Firebox/Tube surface | 1 : 9.35 |
