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Pennsylvania class Q2
The Q2 was created after the duplex prototype of the Q1 class with three driving axles at the front and two at the rear. This was only intended for freight transport and the number of driving axles in the first and se...
General
| Property | Pennsylvania class Q2Remove |
|---|---|
| Built | 1944-1945 |
| Manufacturers | Altoona |
| Wheel arrangement | 4-4-6-4 (Duplex) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Pennsylvania class Q2Remove |
|---|---|
| Length | 37.98 m |
| Wheelbase | 16.29 m |
| Rigid wheelbase | 6.20 m |
| Total wheelbase | 32.80 m |
| Service weight | 280.8 t |
| Adhesive weight | 178.3 t |
| Axle load | 36.2 t |
| Total weight | 475.9 t |
| Water capacity | 71,923 l |
| Fuel capacity | 34 t (coal) |
Boiler
| Property | Pennsylvania class Q2Remove |
|---|---|
| Grate area | 11.306 m² |
| Firebox surface | 67.355 m² |
| Tube heating surface | 557.419 m² |
| Evaporative heating surface | 624.774 m² |
| Superheater surface | 272.206 m² |
| Total heating surface | 897.0 m² |
Power plant
| Property | Pennsylvania class Q2Remove |
|---|---|
| Driver diameter | 1,753 mm |
| Boiler pressure | 20.7 bar |
| Expansion type | simple expansion |
| Cylinders | four, 502 x 711 mm |
Power
| Property | Pennsylvania class Q2Remove |
|---|---|
| Power source | steam |
| Indicated power | 5,956 kW (8,098 PS) |
| Starting effort | 359.1 kN |
| Starting effort booster | 66.723 kN |
Calculated values
| Property | Pennsylvania class Q2Remove |
|---|---|
| Factor of adhesion | 1 : 4.87 |
| Optimal speed | 101 km/h |
| Power-to-weight ratio | 21.2 kW/t |
| Heating Surface Equivalent | 1,506.0 m² |
| Cylinder volume/HSE | 1 : 373.36 |
| Adhesive weight/Total | 1 : 1.58 |
| Tractive force/Heating surface | 1 : 8.36 |
| Grate area/Heating surface | 1 : 79.34 |
| Firebox/Tube surface | 1 : 8.28 |
| Total/Superheater | 1 : 2.30 |
