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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...
General
| Property | Erie class K-5a and b K-5b |
|---|---|
| Built | 1926 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Erie class K-5a and b K-5b |
|---|---|
| Wheelbase | 11.30 m |
| Rigid wheelbase | 4.27 m |
| Total wheelbase | 24.48 m |
| Service weight | 146.5 t |
| Adhesive weight | 93.1 t |
| Axle load | 31.3 t |
| Total weight | 240 t |
| Water capacity | 45,425 l |
| Fuel capacity | 14.5 t (coal) |
Boiler
| Property | Erie class K-5a and b K-5b |
|---|---|
| Grate area | 6.531 m² |
| Firebox surface | 36.046 m² |
| Tube heating surface | 310.575 m² |
| Evaporative heating surface | 346.622 m² |
| Superheater surface | 99.406 m² |
| Total heating surface | 446.0 m² |
Power plant
| Property | Erie class K-5a and b K-5b |
|---|---|
| Driver diameter | 2,007 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 711 x 711 mm |
Power
| Property | Erie class K-5a and b K-5b |
|---|---|
| Power source | steam |
| Estimated power | 2,424 kW (3,296 PS) |
| Starting effort | 210.1 kN |
Calculated values
| Property | Erie class K-5a and b K-5b |
|---|---|
| Factor of adhesion | 1 : 4.35 |
| Optimal speed | 71 km/h |
| Power-to-weight ratio | 16.5 kW/t |
| Heating Surface Equivalent | 725.7 m² |
| Cylinder volume/HSE | 1 : 778.68 |
| Adhesive weight/Total | 1 : 1.57 |
| Tractive force/Heating surface | 1 : 9.84 |
| Grate area/Heating surface | 1 : 68.29 |
| Firebox/Tube surface | 1 : 8.62 |
| Total/Superheater | 1 : 3.49 |
