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Italian State Railway class 980
The FS class 980 was a rack locomotive built starting in 1908 for standard-gauge lines. The first four were ordered from the SLM for the line to Volterra in Tuscany with an incline of ten percent. In 1912 and 1913, SL...
| Italian State Railway class 980Remove | |
|---|---|
| Variant | Standard |
| Built | 1908-1913 |
| Manufacturers | SLM |
| Wheel arrangement | C zt |
| Gauge | 1435 mm |
| Length | 9070 mm |
| Service mass | 44400 kg |
| Top speed | 40 km/h |
| Power | |
| Engine |
General
| Property | Italian State Railway class 980 Standard Remove |
|---|---|
| Built | 1908-1913 |
| Manufacturers | SLM |
| Wheel arrangement | 0-6-0RT (Six-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Italian State Railway class 980 Standard Remove |
|---|---|
| Length | 9.07 m |
| Wheelbase | 3.80 m |
| Empty mass | 36.4 t |
| Service mass | 44.4 t |
| Adhesion mass | 44.4 t |
| Rigid wheelbase | 3.80 m |
| Axle load | 14.8 t |
| Water capacity | 3,300 l |
| Fuel capacity | 1 t (coal) |
Boiler
| Property | Italian State Railway class 980 Standard Remove |
|---|---|
| Grate area | 1.8 m² |
| Evaporative heating surface | 88.4 m² |
| Total heating surface | 88.4 m² |
Power plant
| Property | Italian State Railway class 980 Standard Remove |
|---|---|
| Driver diameter | 1,040 mm |
| Boiler pressure | 14 bar |
| Expansion type | compound |
| Cylinders | four, 430 x 500 mm |
Power
| Property | Italian State Railway class 980 Standard Remove |
|---|---|
| Power source | steam |
| Indicated power | 325 kW (442 PS) |
| Top speed | 40 km/h |
| Starting effort | 149.5 kN |
| Starting effort simple | 179.3 kN |
Calculated values
| Property | Italian State Railway class 980 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 2.43 |
| Optimal speed | 10 km/h |
| Power-to-weight ratio | 7.3 kW/t |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 42.37 |
| Grate area/Heating surface | 1 : 49.11 |
