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Pennsylvania class E3
The E3 was an Atlantic that was built by the PRR parallel to its E2 that was largely similar, but had larger cylinders. Between 1901 and 1910, a total of eight E3, 114 E3a and 56 E3d were built in the Juniata shops at...
General
| Property | Pennsylvania class E3 E3a |
|---|---|
| Built | 1903-1905 |
| Manufacturers | Altoona |
| Wheel arrangement | 4-4-2 (Atlantic) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Pennsylvania class E3 E3a |
|---|---|
| Wheelbase | 9.39 m |
| Rigid wheelbase | 2.26 m |
| Total wheelbase | 18.35 m |
| Service weight | 86.2 t |
| Adhesive weight | 53.7 t |
| Axle load | 28 t |
| Total weight | 147.4 t |
| Water capacity | 21,955 l |
| Fuel capacity | 11.8 t (coal) |
Boiler
| Property | Pennsylvania class E3 E3a |
|---|---|
| Grate area | 5.156 m² |
| Firebox surface | 15.394 m² |
| Tube heating surface | 229.777 m² |
| Evaporative heating surface | 245.171 m² |
| Total heating surface | 245.2 m² |
Power plant
| Property | Pennsylvania class E3 E3a |
|---|---|
| Driver diameter | 2,032 mm |
| Boiler pressure | 14.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 559 x 660 mm |
Power
| Property | Pennsylvania class E3 E3a |
|---|---|
| Power source | steam |
| Estimated power | 1,193 kW (1,622 PS) |
| Starting effort | 121.9 kN |
Calculated values
| Property | Pennsylvania class E3 E3a |
|---|---|
| Factor of adhesion | 1 : 4.32 |
| Optimal speed | 60 km/h |
| Power-to-weight ratio | 13.8 kW/t |
| Heating Surface Equivalent | 322.1 m² |
| Cylinder volume/HSE | 1 : 1,005.53 |
| Adhesive weight/Total | 1 : 1.60 |
| Tractive force/Heating surface | 1 : 10.39 |
| Grate area/Heating surface | 1 : 47.55 |
| Firebox/Tube surface | 1 : 14.93 |
