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Illinois Central class A-1
The class A-1 of the Illinois Central consisted of 50 2-8-4 superpower locomotives which were based on the Lima A-1 demonstrator. 50 were completed in 1926 with 7000 to 7039 having an Elesco feedwater heater and 7040 ...
| Illinois Central class A-1Remove | |
|---|---|
| Variant | |
| Built | 1926 |
| Manufacturers | Lima |
| Wheel arrangement | 1D2 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 175994 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Illinois Central class A-1Remove |
|---|---|
| Built | 1926 |
| Manufacturers | Lima |
| Wheel arrangement | 2-8-4 (Berkshire) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Illinois Central class A-1Remove |
|---|---|
| Wheelbase | 12.70 m |
| Total wheelbase | 25.15 m |
| Service mass | 176 t |
| Adhesion mass | 112.5 t |
| Total mass | 305.7 t |
| Rigid wheelbase | 5.03 m |
| Axle load | 28.2 t |
| Water capacity | 56,781 l |
| Fuel capacity | 18.1 t (coal) |
Boiler
| Property | Illinois Central class A-1Remove |
|---|---|
| Grate area | 9.29 m² |
| Firebox surface | 38.462 m² |
| Tube heating surface | 441.29 m² |
| Evaporative heating surface | 479.752 m² |
| Superheater surface | 196.119 m² |
| Total heating surface | 675.9 m² |
Power plant
| Property | Illinois Central class A-1Remove |
|---|---|
| Driver diameter | 1,613 mm |
| Boiler pressure | 16.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 711 x 762 mm |
Power
| Property | Illinois Central class A-1Remove |
|---|---|
| Power source | steam |
| Estimated power | 3,207 kW (4,360 PS) |
| Starting effort | 336.1 kN |
| Starting effort booster | 53.379 kN |
Calculated values
| Property | Illinois Central class A-1Remove |
|---|---|
| Factor of adhesion | 1 : 3.28 |
| Optimal speed | 58 km/h |
| Power-to-weight ratio | 18.2 kW/t |
| Heating Surface Equivalent | 1,064.3 m² |
| Cylinder volume/HSE | 1 : 568.85 |
| Adhesive weight/Total | 1 : 1.56 |
| Tractive force/Heating surface | 1 : 10.39 |
| Grate area/Heating surface | 1 : 72.75 |
| Firebox/Tube surface | 1 : 11.47 |
| Total/Superheater | 1 : 2.45 |
