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Baltimore & Ohio class EM-1
Although the Baltimore & Ohio wanted to buy diesel locomotives for freight traffic in the forties, they had to order steam locomotives due to the war restrictions. This was the birth of the class EM-1 with the wheel a...
| Baltimore & Ohio class EM-1Remove | |
|---|---|
| Variant | Standard |
| Built | 1944-1945 |
| Manufacturers | Baldwin |
| Wheel arrangement | (1D)D2 ma |
| Gauge | 1435 mm |
| Length | |
| Service mass | 285174 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Baltimore & Ohio class EM-1 Standard Remove |
|---|---|
| Built | 1944-1945 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-8-8-4 (Yellowstone) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Baltimore & Ohio class EM-1 Standard Remove |
|---|---|
| Wheelbase | 19.86 m |
| Total wheelbase | 34.29 m |
| Service mass | 285.2 t |
| Adhesion mass | 220 t |
| Total mass | 458.4 t |
| Rigid wheelbase | 5.11 m |
| Axle load | 28.2 t |
| Water capacity | 83,279 l |
| Fuel capacity | 22.7 t (coal) |
Boiler
| Property | Baltimore & Ohio class EM-1 Standard Remove |
|---|---|
| Grate area | 10.916 m² |
| Firebox surface | 70.235 m² |
| Tube heating surface | 421.966 m² |
| Evaporative heating surface | 492.201 m² |
| Superheater surface | 196.769 m² |
| Total heating surface | 689.0 m² |
Power plant
| Property | Baltimore & Ohio class EM-1 Standard Remove |
|---|---|
| Driver diameter | 1,626 mm |
| Boiler pressure | 16.2 bar |
| Expansion type | simple expansion |
| Cylinders | four, 610 x 813 mm |
Power
| Property | Baltimore & Ohio class EM-1 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,400 kW (5,982 PS) |
| Starting effort | 511.8 kN |
Calculated values
| Property | Baltimore & Ohio class EM-1 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.22 |
| Optimal speed | 53 km/h |
| Power-to-weight ratio | 15.4 kW/t |
| Heating Surface Equivalent | 1,236.9 m² |
| Cylinder volume/HSE | 1 : 767.16 |
| Adhesive weight/Total | 1 : 1.30 |
| Tractive force/Heating surface | 1 : 15.51 |
| Grate area/Heating surface | 1 : 63.12 |
| Firebox/Tube surface | 1 : 6.01 |
| Total/Superheater | 1 : 2.50 |
