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Buffalo, Rochester & Pittsburgh class WW
The first Pacifics ordered by the BR&P were designated class WW. Their driver diameter was a modest 73 inches and the cylinders measured 24.5 inches in diameter and had a stroke of 26 inches. This resulted in a starti...
General
| Property | Buffalo, Rochester & Pittsburgh class WWRemove |
|---|---|
| Built | 1912-1913, 1918 |
| Manufacturers | ALCO |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Buffalo, Rochester & Pittsburgh class WWRemove |
|---|---|
| Length | 22.51 m |
| Wheelbase | 10.14 m |
| Rigid wheelbase | 3.96 m |
| Total wheelbase | 20.08 m |
| Service weight | 117 t |
| Adhesive weight | 74.2 t |
| Axle load | 27.7 t |
| Total weight | 194.8 t |
| Water capacity | 35,015 l |
| Fuel capacity | 12.7 t (coal) |
Boiler
| Property | Buffalo, Rochester & Pittsburgh class WWRemove |
|---|---|
| Grate area | 5.249 m² |
| Firebox surface | 21.739 m² |
| Tube heating surface | 315.035 m² |
| Evaporative heating surface | 336.774 m² |
| Superheater surface | 69.677 m² |
| Total heating surface | 406.5 m² |
Power plant
| Property | Buffalo, Rochester & Pittsburgh class WWRemove |
|---|---|
| Driver diameter | 1,854 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 622 x 660 mm |
Power
| Property | Buffalo, Rochester & Pittsburgh class WWRemove |
|---|---|
| Power source | steam |
| Estimated power | 1,790 kW (2,434 PS) |
| Starting effort | 161.7 kN |
Calculated values
| Property | Buffalo, Rochester & Pittsburgh class WWRemove |
|---|---|
| Factor of adhesion | 1 : 4.50 |
| Optimal speed | 68 km/h |
| Power-to-weight ratio | 15.3 kW/t |
| Heating Surface Equivalent | 584.8 m² |
| Cylinder volume/HSE | 1 : 686.91 |
| Adhesive weight/Total | 1 : 1.58 |
| Tractive force/Heating surface | 1 : 8.31 |
| Grate area/Heating surface | 1 : 77.43 |
| Firebox/Tube surface | 1 : 14.49 |
| Total/Superheater | 1 : 4.83 |
