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New York Central classes S-1 and S-2 “Niagara”
For the increasingly heavier express trains between New York City and Chicago, the New York Central ordered a locomotive from ALCO in 1945 with a 4-8-4 wheel arrangement, which was supposed to deliver a permanent outp...
| New York Central classes S-1 and S-2 “Niagara”Remove | |
|---|---|
| Variant | |
| Built | 1945 |
| Manufacturers | ALCO |
| Wheel arrangement | 2D2 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 213642 kg |
| Top speed | 193 km/h |
| Power | |
| Engine |
General
| Property | New York Central classes S-1 and S-2 “Niagara”Remove |
|---|---|
| Built | 1945 |
| Manufacturers | ALCO |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | New York Central classes S-1 and S-2 “Niagara”Remove |
|---|---|
| Wheelbase | 14.86 m |
| Total wheelbase | 29.63 m |
| Service mass | 213.6 t |
| Adhesion mass | 124.7 t |
| Total mass | 366.5 t |
| Rigid wheelbase | 6.25 m |
| Axle load | 31.2 t |
| Water capacity | 68,137 l |
| Fuel capacity | 41.7 t (coal) |
Boiler
| Property | New York Central classes S-1 and S-2 “Niagara”Remove |
|---|---|
| Grate area | 9.3 m² |
| Firebox surface | 48.031 m² |
| Tube heating surface | 382.296 m² |
| Evaporative heating surface | 430.327 m² |
| Superheater surface | 183.669 m² |
| Total heating surface | 614.0 m² |
Power plant
| Property | New York Central classes S-1 and S-2 “Niagara”Remove |
|---|---|
| Driver diameter | 1,905 mm |
| Boiler pressure | 19 bar |
| Expansion type | simple expansion |
| Cylinders | two, 635 x 813 mm |
Power
| Property | New York Central classes S-1 and S-2 “Niagara”Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,250 kW (5,778 PS) |
| Top speed | 193 km/h |
| Starting effort | 277.3 kN |
Calculated values
| Property | New York Central classes S-1 and S-2 “Niagara”Remove |
|---|---|
| Factor of adhesion | 1 : 4.41 |
| Optimal speed | 93 km/h |
| Power-to-weight ratio | 19.9 kW/t |
| Heating Surface Equivalent | 1,037.8 m² |
| Cylinder volume/HSE | 1 : 496.05 |
| Adhesive weight/Total | 1 : 1.71 |
| Tractive force/Heating surface | 1 : 9.43 |
| Grate area/Heating surface | 1 : 66.02 |
| Firebox/Tube surface | 1 : 7.96 |
| Total/Superheater | 1 : 2.34 |
