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Philadelphia & Reading class P-3
In 1900, Baldwin built six Atlantics for the Philadelphia & Reading which were numbered 322 to 327 and designated class P-3a. Built for firing anthracite , they were designed as Camelbacks with a wide Wootten firebox ...
| Philadelphia & Reading class P-3Remove | |
|---|---|
| Variant | P-3a |
| Built | 1900 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2B1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 74389 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Philadelphia & Reading class P-3P-3a |
|---|---|
| Built | 1900 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-4-2 (Atlantic) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Philadelphia & Reading class P-3P-3a |
|---|---|
| Wheelbase | 8.10 m |
| Service mass | 74.4 t |
| Adhesion mass | 38.1 t |
| Total mass | 128.8 t |
| Rigid wheelbase | 2.21 m |
| Axle load | 19.1 t |
| Water capacity | 22,523 l |
| Fuel capacity | 7.3 t (coal) |
Boiler
| Property | Philadelphia & Reading class P-3P-3a |
|---|---|
| Grate area | 7.497 m² |
| Firebox surface | 20.847 m² |
| Tube heating surface | 215.219 m² |
| Evaporative heating surface | 236.067 m² |
| Total heating surface | 236.1 m² |
Power plant
| Property | Philadelphia & Reading class P-3P-3a |
|---|---|
| Driver diameter | 2,140 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 381 x 610 mm and LP: 635 x 610 mm |
Power
| Property | Philadelphia & Reading class P-3P-3a |
|---|---|
| Power source | steam |
| Estimated power | 1,193 kW (1,622 PS) |
| Starting effort | 71.3 kN |
| Starting effort simple | 85.5 kN |
Calculated values
| Property | Philadelphia & Reading class P-3P-3a |
|---|---|
| Factor of adhesion | 1 : 5.24 |
| Optimal speed | 103 km/h |
| Power-to-weight ratio | 16.0 kW/t |
| Heating Surface Equivalent | 340.3 m² |
| Cylinder volume/HSE | 1 : 975.77 |
| Adhesive weight/Total | 1 : 1.95 |
| Tractive force/Heating surface | 1 : 6.31 |
| Grate area/Heating surface | 1 : 31.49 |
| Firebox/Tube surface | 1 : 10.32 |
