Compare locomotives
Add a locomotive
Norwegian State Railways type 31
When the Bergen Railway was converted for higher axle loads , more powerful locomotives than the type 26 could be used there. This resulted in the type 31 with the same axle arrangement, but with a higher weight and b...
| Norwegian State Railways type 31Remove | |
|---|---|
| Variant | |
| Built | 1915-1926 |
| Manufacturers | Thunes;NoHAB;Norsk Maskin Industri;Breda;Hamar Jernstøberi |
| Wheel arrangement | 2D |
| Gauge | 1435 mm |
| Length | 17720 mm |
| Service mass | 75000 kg |
| Top speed | 70 km/h |
| Power | |
| Engine |
General
| Property | Norwegian State Railways type 31Remove |
|---|---|
| Built | 1915-1926 |
| Manufacturers | Thunes, NoHAB, Norsk Maskin Industri, Breda, Hamar Jernstøberi |
| Wheel arrangement | 4-8-0 (Twelve-wheeler) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Norwegian State Railways type 31Remove |
|---|---|
| Length | 17.72 m |
| Wheelbase | 8.45 m |
| Total wheelbase | 15.15 m |
| Empty mass | 66.8 t |
| Service mass | 75 t |
| Adhesion mass | 55.9 t |
| Total mass | 118.2 t |
| Rigid wheelbase | 5.00 m |
| Axle load | 14 t |
| Water capacity | 20,000 l |
| Fuel capacity | 5 t (coal) |
Boiler
| Property | Norwegian State Railways type 31Remove |
|---|---|
| Grate area | 3 m² |
| Firebox surface | 11.9 m² |
| Tube heating surface | 199.7 m² |
| Evaporative heating surface | 211.6 m² |
| Total heating surface | 211.6 m² |
Power plant
| Property | Norwegian State Railways type 31Remove |
|---|---|
| Driver diameter | 1,349 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | four, 410 x 600 mm |
Power
| Property | Norwegian State Railways type 31Remove |
|---|---|
| Power source | steam |
| Estimated power | 700 kW (952 PS) |
| Top speed | 70 km/h |
| Starting effort | 152.5 kN |
Calculated values
| Property | Norwegian State Railways type 31Remove |
|---|---|
| Factor of adhesion | 1 : 3.60 |
| Optimal speed | 27 km/h |
| Power-to-weight ratio | 9.3 kW/t |
| Heating Surface Equivalent | 271.1 m² |
| Cylinder volume/HSE | 1 : 1,168.80 |
| Adhesive weight/Total | 1 : 1.34 |
| Tractive force/Heating surface | 1 : 15.05 |
| Grate area/Heating surface | 1 : 70.53 |
| Firebox/Tube surface | 1 : 16.78 |
