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Milwaukee Road class A
In order to increase average speeds in the fight against other railroads, the Milwaukee Road had ALCO build four class A streamlined locomotives from 1935 onwards. In order to save weight, not only particularly light ...
| Milwaukee Road class ARemove | |
|---|---|
| Variant | Standard |
| Built | 1935-1937 |
| Manufacturers | ALCO |
| Wheel arrangement | 2B1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 129728 kg |
| Top speed | 177 km/h |
| Power | |
| Engine |
General
| Property | Milwaukee Road class A Standard Remove |
|---|---|
| Built | 1935-1937 |
| Manufacturers | ALCO |
| Wheel arrangement | 4-4-2 (Atlantic) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Milwaukee Road class A Standard Remove |
|---|---|
| Wheelbase | 11.15 m |
| Total wheelbase | 24.08 m |
| Service mass | 129.7 t |
| Adhesion mass | 64.4 t |
| Total mass | 229.3 t |
| Rigid wheelbase | 2.59 m |
| Axle load | 32.2 t |
| Water capacity | 49,210 l |
| Fuel capacity | 15,142 l (oil) |
Boiler
| Property | Milwaukee Road class A Standard Remove |
|---|---|
| Grate area | 6.41 m² |
| Firebox surface | 27.314 m² |
| Tube heating surface | 274.157 m² |
| Evaporative heating surface | 301.471 m² |
| Superheater surface | 95.597 m² |
| Total heating surface | 397.1 m² |
Power plant
| Property | Milwaukee Road class A Standard Remove |
|---|---|
| Driver diameter | 2,134 mm |
| Boiler pressure | 20.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 711 mm |
Power
| Property | Milwaukee Road class A Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 2,610 kW (3,549 PS) |
| Top speed | 177 km/h |
| Starting effort | 136.5 kN |
Calculated values
| Property | Milwaukee Road class A Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.63 |
| Optimal speed | 117 km/h |
| Power-to-weight ratio | 20.1 kW/t |
| Heating Surface Equivalent | 629.2 m² |
| Cylinder volume/HSE | 1 : 413.50 |
| Adhesive weight/Total | 1 : 2.01 |
| Tractive force/Heating surface | 1 : 7.18 |
| Grate area/Heating surface | 1 : 61.95 |
| Firebox/Tube surface | 1 : 10.04 |
| Total/Superheater | 1 : 3.15 |
