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French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”
The name “Super Pacific” describes a total of 90 Pacific locomotives built for the French Nord between 1923 and 1931. They were a direct development of the 3.1151 to 3.1170 series, also being four-cylinder compounds w...
| French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”Remove | |
|---|---|
| Variant | 3.1251-3.1290 |
| Built | 1930-1931 |
| Manufacturers | SFCM |
| Wheel arrangement | 2C1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 100500 kg |
| Top speed | 130 km/h |
| Power | |
| Engine |
General
| Property | French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”3.1251-3.1290 |
|---|---|
| Built | 1930-1931 |
| Manufacturers | SFCM |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”3.1251-3.1290 |
|---|---|
| Length loco | 12.53 m |
| Wheelbase | 10.42 m |
| Service mass | 100.5 t |
| Adhesion mass | 56.8 t |
| Rigid wheelbase | 4.02 m |
| Water capacity | 37,000 l |
| Fuel capacity | 9 t (coal) |
Boiler
| Property | French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”3.1251-3.1290 |
|---|---|
| Grate area | 3.54 m² |
| Firebox surface | 15.7 m² |
| Tube heating surface | 188.5 m² |
| Evaporative heating surface | 204.2 m² |
| Superheater surface | 63.8 m² |
| Total heating surface | 268.0 m² |
Power plant
| Property | French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”3.1251-3.1290 |
|---|---|
| Driver diameter | 1,900 mm |
| Boiler pressure | 17 bar |
| Expansion type | compound |
| Cylinders | four, HP: 440 x 660 mm and LP: 620 x 690 mm |
Power
| Property | French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”3.1251-3.1290 |
|---|---|
| Power source | steam |
| Indicated power | 2,059 kW (2,799 PS) |
| Top speed | 130 km/h |
| Starting effort | 131.2 kN |
| Starting effort simple | 157.4 kN |
Calculated values
| Property | French Northern Railway No. 3.1201 to 3.1290 “Super Pacific”3.1251-3.1290 |
|---|---|
| Factor of adhesion | 1 : 4.25 |
| Optimal speed | 97 km/h |
| Power-to-weight ratio | 20.5 kW/t |
| Heating Surface Equivalent | 410.3 m² |
| Cylinder volume/HSE | 1 : 996.89 |
| Adhesive weight/Total | 1 : 1.77 |
| Tractive force/Heating surface | 1 : 10.22 |
| Grate area/Heating surface | 1 : 75.71 |
| Firebox/Tube surface | 1 : 12.01 |
| Total/Superheater | 1 : 3.20 |
