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Philadelphia & Reading No. 385 and 378
Superintendent L.B. Paxson of the Philadelphia & Reading was convinced in the mid-1890s that an express locomotive with one powered axle would still be sufficient to haul express trains at high speed. He was thinking ...
| Philadelphia & Reading No. 385 and 378Remove | |
|---|---|
| Variant | rebuilt D-10a |
| Built | 1904 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | |
| Service mass | 68039 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Philadelphia & Reading No. 385 and 378rebuilt D-10a |
|---|---|
| Built | 1904 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Philadelphia & Reading No. 385 and 378rebuilt D-10a |
|---|---|
| Wheelbase | 7.18 m |
| Service mass | 68 t |
| Adhesion mass | 44.7 t |
| Total mass | 131.5 t |
| Rigid wheelbase | 2.29 m |
| Axle load | 22.4 t |
| Water capacity | 15,142 l |
| Fuel capacity | 6.4 t (coal) |
Boiler
| Property | Philadelphia & Reading No. 385 and 378rebuilt D-10a |
|---|---|
| Grate area | 7.061 m² |
| Firebox surface | 12.728 m² |
| Tube heating surface | 160.815 m² |
| Evaporative heating surface | 173.543 m² |
| Total heating surface | 173.5 m² |
Power plant
| Property | Philadelphia & Reading No. 385 and 378rebuilt D-10a |
|---|---|
| Driver diameter | 2,140 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 660 mm |
Power
| Property | Philadelphia & Reading No. 385 and 378rebuilt D-10a |
|---|---|
| Power source | steam |
| Estimated power | 1,119 kW (1,521 PS) |
| Starting effort | 84.2 kN |
Calculated values
| Property | Philadelphia & Reading No. 385 and 378rebuilt D-10a |
|---|---|
| Factor of adhesion | 1 : 5.21 |
| Optimal speed | 80 km/h |
| Power-to-weight ratio | 16.4 kW/t |
| Heating Surface Equivalent | 237.2 m² |
| Cylinder volume/HSE | 1 : 1,018.63 |
| Adhesive weight/Total | 1 : 1.52 |
| Tractive force/Heating surface | 1 : 10.14 |
| Grate area/Heating surface | 1 : 24.58 |
| Firebox/Tube surface | 1 : 12.63 |
