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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...
General
| Property | Baltimore & Ohio class EM-1Remove |
|---|---|
| Built | 1944-1945 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-8-8-4 (Yellowstone) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Baltimore & Ohio class EM-1Remove |
|---|---|
| Wheelbase | 19.86 m |
| Rigid wheelbase | 5.11 m |
| Total wheelbase | 34.29 m |
| Service weight | 285.2 t |
| Adhesive weight | 220 t |
| Axle load | 28.2 t |
| Total weight | 458.4 t |
| Water capacity | 83,279 l |
| Fuel capacity | 22.7 t (coal) |
Boiler
| Property | Baltimore & Ohio class EM-1Remove |
|---|---|
| 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-1Remove |
|---|---|
| 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-1Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,400 kW (5,982 PS) |
| Starting effort | 511.8 kN |
Calculated values
| Property | Baltimore & Ohio class EM-1Remove |
|---|---|
| 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 |
