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Illinois Central class 1139
The class 1139 of the Illinois Central consisted of 65 Pacifics which came after the 70 class 1069 locomotives from 1910. They had 75 inch drivers and 26 by 28 inch cylinders. 20 each were delivered in 1916 and 1918 b...
| Illinois Central class 1139Remove | |
|---|---|
| Variant | Standard |
| Built | 1916, 1918, 1920 |
| Manufacturers | ALCO |
| Wheel arrangement | 2C1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 127006 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Illinois Central class 1139 Standard Remove |
|---|---|
| Built | 1916, 1918, 1920 |
| Manufacturers | ALCO |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Illinois Central class 1139 Standard Remove |
|---|---|
| Wheelbase | 10.47 m |
| Total wheelbase | 20.43 m |
| Service mass | 127 t |
| Adhesion mass | 76.9 t |
| Total mass | 209.7 t |
| Rigid wheelbase | 3.96 m |
| Axle load | 25.6 t |
| Water capacity | 34,069 l |
| Fuel capacity | 13.6 t (coal) |
Boiler
| Property | Illinois Central class 1139 Standard Remove |
|---|---|
| Grate area | 5.11 m² |
| Firebox surface | 22.687 m² |
| Tube heating surface | 314.087 m² |
| Evaporative heating surface | 336.774 m² |
| Superheater surface | 76.738 m² |
| Total heating surface | 413.5 m² |
Power plant
| Property | Illinois Central class 1139 Standard Remove |
|---|---|
| Driver diameter | 1,905 mm |
| Boiler pressure | 13.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 660 x 711 mm |
Power
| Property | Illinois Central class 1139 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,529 kW (2,079 PS) |
| Starting effort | 181.3 kN |
Calculated values
| Property | Illinois Central class 1139 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.16 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 12.0 kW/t |
| Heating Surface Equivalent | 603.7 m² |
| Cylinder volume/HSE | 1 : 807.08 |
| Adhesive weight/Total | 1 : 1.65 |
| Tractive force/Heating surface | 1 : 9.16 |
| Grate area/Heating surface | 1 : 80.92 |
| Firebox/Tube surface | 1 : 13.84 |
| Total/Superheater | 1 : 4.39 |
