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US Railroad Administration Heavy Santa Fe
The USRA standard model for heavy, slow coal trains was the Heavy Santa Fé. ALCO-Brooks delivered 135 and Baldwin 40 more. By far the largest number were the 130 members of the Pennsylvania Railroad class N2s. The loc...
| US Railroad Administration Heavy Santa FeRemove | |
|---|---|
| Variant | Standard |
| Built | 1918-1919 |
| Manufacturers | ALCO;Baldwin |
| Wheel arrangement | 1E1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 172365 kg |
| Top speed | 56 km/h |
| Power | |
| Engine |
General
| Property | US Railroad Administration Heavy Santa Fe Standard Remove |
|---|---|
| Built | 1918-1919 |
| Manufacturers | ALCO, Baldwin |
| Wheel arrangement | 2-10-2 (Santa Fé) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | US Railroad Administration Heavy Santa Fe Standard Remove |
|---|---|
| Length loco | 16.86 m |
| Wheelbase | 12.85 m |
| Total wheelbase | 25.26 m |
| Service mass | 172.4 t |
| Adhesion mass | 132.9 t |
| Total mass | 265.9 t |
| Rigid wheelbase | 6.81 m |
| Axle load | 26.6 t |
| Water capacity | 45,425 l |
| Fuel capacity | 14.5 t (coal) |
Boiler
| Property | US Railroad Administration Heavy Santa Fe Standard Remove |
|---|---|
| Grate area | 7.73 m² |
| Firebox surface | 39.855 m² |
| Tube heating surface | 439.153 m² |
| Evaporative heating surface | 479.009 m² |
| Superheater surface | 114.271 m² |
| Total heating surface | 593.3 m² |
Power plant
| Property | US Railroad Administration Heavy Santa Fe Standard Remove |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 13.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 762 x 813 mm |
Power
| Property | US Railroad Administration Heavy Santa Fe Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 2,461 kW (3,346 PS) |
| Top speed | 56 km/h |
| Starting effort | 328.4 kN |
Calculated values
| Property | US Railroad Administration Heavy Santa Fe Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.97 |
| Optimal speed | 45 km/h |
| Power-to-weight ratio | 14.3 kW/t |
| Heating Surface Equivalent | 906.8 m² |
| Cylinder volume/HSE | 1 : 817.50 |
| Adhesive weight/Total | 1 : 1.30 |
| Tractive force/Heating surface | 1 : 11.56 |
| Grate area/Heating surface | 1 : 76.75 |
| Firebox/Tube surface | 1 : 11.02 |
| Total/Superheater | 1 : 4.19 |
