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Norfolk & Western class A
The Norfolk & Western class A consisted of a total of 43 simple articulated locomotives, which were suitable for different types of trains from slow coal trains to passenger trains. The trailing bogie allowed for a ve...
| Norfolk & Western class ARemove | |
|---|---|
| Variant | Standard |
| Built | 1936-1950 |
| Manufacturers | Roanoke |
| Wheel arrangement | (1C)C2 ma |
| Gauge | 1435 mm |
| Length | 37116 mm |
| Service mass | 259909 kg |
| Top speed | 113 km/h |
| Power | |
| Engine |
General
| Property | Norfolk & Western class A Standard Remove |
|---|---|
| Built | 1936-1950 |
| Manufacturers | Roanoke |
| Wheel arrangement | 2-6-6-4 |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Norfolk & Western class A Standard Remove |
|---|---|
| Length | 37.12 m |
| Wheelbase | 18.40 m |
| Total wheelbase | 33.00 m |
| Service mass | 259.9 t |
| Adhesion mass | 196.1 t |
| Total mass | 431.6 t |
| Rigid wheelbase | 7.52 m |
| Axle load | 32.7 t |
| Water capacity | 83,279 l |
| Fuel capacity | 29.9 t (coal) |
Boiler
| Property | Norfolk & Western class A Standard Remove |
|---|---|
| Grate area | 11.334 m² |
| Firebox surface | 54.534 m² |
| Tube heating surface | 616.784 m² |
| Evaporative heating surface | 671.318 m² |
| Superheater surface | 251.117 m² |
| Total heating surface | 922.4 m² |
Power plant
| Property | Norfolk & Western class A Standard Remove |
|---|---|
| Driver diameter | 1,778 mm |
| Boiler pressure | 20.7 bar |
| Expansion type | simple expansion |
| Cylinders | four, 610 x 762 mm |
Power
| Property | Norfolk & Western class A Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,623 kW (6,286 PS) |
| Top speed | 113 km/h |
| Starting effort | 560.0 kN |
Calculated values
| Property | Norfolk & Western class A Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.44 |
| Optimal speed | 50 km/h |
| Power-to-weight ratio | 17.8 kW/t |
| Heating Surface Equivalent | 1,446.2 m² |
| Cylinder volume/HSE | 1 : 615.12 |
| Adhesive weight/Total | 1 : 1.33 |
| Tractive force/Heating surface | 1 : 12.68 |
| Grate area/Heating surface | 1 : 81.39 |
| Firebox/Tube surface | 1 : 11.31 |
| Total/Superheater | 1 : 2.67 |
