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Baltimore & Ohio class E-27
The largest class of Consolidations built for the Baltimore & Ohio was the E-27. The intended area of service were heavy freight trains on both flat and mountainous routes. In order to keep the strain on the locomotiv...
General
| Property | Baltimore & Ohio class E-27 rebuilt E-27ca. da |
|---|---|
| Built | ab 1920 |
| Manufacturers | B&O |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Baltimore & Ohio class E-27 rebuilt E-27ca. da |
|---|---|
| Wheelbase | 7.80 m |
| Rigid wheelbase | 5.08 m |
| Total wheelbase | 18.19 m |
| Service weight | 102.8 t |
| Adhesive weight | 92.3 t |
| Axle load | 24.4 t |
| Total weight | 169.9 t |
| Water capacity | 26,498 l |
| Fuel capacity | 16.3 t (coal) |
Boiler
| Property | Baltimore & Ohio class E-27 rebuilt E-27ca. da |
|---|---|
| Grate area | 5.225 m² |
| Firebox surface | 16.658 m² |
| Tube heating surface | 205.66 m² |
| Evaporative heating surface | 222.317 m² |
| Superheater surface | 39.484 m² |
| Total heating surface | 261.8 m² |
Power plant
| Property | Baltimore & Ohio class E-27 rebuilt E-27ca. da |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 14.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 610 x 762 mm |
Power
| Property | Baltimore & Ohio class E-27 rebuilt E-27ca. da |
|---|---|
| Power source | steam |
| Estimated power | 1,454 kW (1,977 PS) |
| Starting effort | 226.6 kN |
Calculated values
| Property | Baltimore & Ohio class E-27 rebuilt E-27ca. da |
|---|---|
| Factor of adhesion | 1 : 4.00 |
| Optimal speed | 39 km/h |
| Power-to-weight ratio | 14.1 kW/t |
| Heating Surface Equivalent | 384.6 m² |
| Cylinder volume/HSE | 1 : 1,156.60 |
| Adhesive weight/Total | 1 : 1.11 |
| Tractive force/Heating surface | 1 : 18.07 |
| Grate area/Heating surface | 1 : 50.11 |
| Firebox/Tube surface | 1 : 12.35 |
| Total/Superheater | 1 : 5.63 |
