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Erie class K-5a and b
Based on the USRA Heavy Pacifics, which the Erie was the only one to receive, it received ten more locomotives in 1923. These were similar in size to the USRA locomotives, but had a larger superheater and were slightl...
| Erie class K-5a and bRemove | |
|---|---|
| Variant | K-5a (large tender) |
| Built | 1923 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2C1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 146511 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Erie class K-5a and bK-5a (large tender) |
|---|---|
| Built | 1923 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Erie class K-5a and bK-5a (large tender) |
|---|---|
| Wheelbase | 11.30 m |
| Total wheelbase | 24.48 m |
| Service mass | 146.5 t |
| Adhesion mass | 93.1 t |
| Total mass | 289 t |
| Rigid wheelbase | 4.27 m |
| Axle load | 31.3 t |
| Water capacity | 62,459 l |
| Fuel capacity | 21.8 t (coal) |
Boiler
| Property | Erie class K-5a and bK-5a (large tender) |
|---|---|
| Grate area | 6.578 m² |
| Firebox surface | 35.396 m² |
| Tube heating surface | 310.854 m² |
| Evaporative heating surface | 346.25 m² |
| Superheater surface | 99.406 m² |
| Total heating surface | 445.7 m² |
Power plant
| Property | Erie class K-5a and bK-5a (large tender) |
|---|---|
| Driver diameter | 2,007 mm |
| Boiler pressure | 14.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 686 x 711 mm |
Power
| Property | Erie class K-5a and bK-5a (large tender) |
|---|---|
| Power source | steam |
| Estimated power | 2,573 kW (3,498 PS) |
| Starting effort | 205.2 kN |
Calculated values
| Property | Erie class K-5a and bK-5a (large tender) |
|---|---|
| Factor of adhesion | 1 : 4.45 |
| Optimal speed | 77 km/h |
| Power-to-weight ratio | 17.6 kW/t |
| Heating Surface Equivalent | 722.0 m² |
| Cylinder volume/HSE | 1 : 727.69 |
| Adhesive weight/Total | 1 : 1.57 |
| Tractive force/Heating surface | 1 : 9.61 |
| Grate area/Heating surface | 1 : 67.75 |
| Firebox/Tube surface | 1 : 8.78 |
| Total/Superheater | 1 : 3.48 |
