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Pennsylvania class T1
After the S1 built at the Altoona Works proved too large and of little practical use, Baldwin built the first two prototypes of the T1 for the PRR during World War II. The reason for purchasing such large express loco...
| Pennsylvania class T1Remove | |
|---|---|
| Variant | Standard |
| Built | 1942, 1946 |
| Manufacturers | Altoona;Baldwin |
| Wheel arrangement | 2BB2 |
| Gauge | 1435 mm |
| Length | 37433 mm |
| Service mass | 227794 kg |
| Top speed | 177 km/h |
| Power | |
| Engine |
General
| Property | Pennsylvania class T1 Standard Remove |
|---|---|
| Built | 1942, 1946 |
| Manufacturers | Altoona, Baldwin |
| Wheel arrangement | 4-4-4-4 (Duplex) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Pennsylvania class T1 Standard Remove |
|---|---|
| Length | 37.43 m |
| Wheelbase | 15.82 m |
| Total wheelbase | 32.61 m |
| Service mass | 227.8 t |
| Adhesion mass | 127 t |
| Total mass | 428.5 t |
| Rigid wheelbase | 4.22 m |
| Axle load | 32.5 t |
| Water capacity | 72,680 l |
| Fuel capacity | 38.6 t (coal) |
Boiler
| Property | Pennsylvania class T1 Standard Remove |
|---|---|
| Grate area | 8.547 m² |
| Firebox surface | 45.523 m² |
| Tube heating surface | 391.029 m² |
| Evaporative heating surface | 436.552 m² |
| Superheater surface | 132.851 m² |
| Total heating surface | 569.4 m² |
Power plant
| Property | Pennsylvania class T1 Standard Remove |
|---|---|
| Driver diameter | 2,032 mm |
| Boiler pressure | 20.7 bar |
| Expansion type | simple expansion |
| Cylinders | four, 502 x 660 mm |
Power
| Property | Pennsylvania class T1 Standard Remove |
|---|---|
| Power source | steam |
| Indicated power | 4,847 kW (6,590 PS) |
| Top speed | 177 km/h |
| Starting effort | 287.6 kN |
Calculated values
| Property | Pennsylvania class T1 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.33 |
| Optimal speed | 103 km/h |
| Power-to-weight ratio | 21.3 kW/t |
| Heating Surface Equivalent | 929.9 m² |
| Cylinder volume/HSE | 1 : 561.48 |
| Adhesive weight/Total | 1 : 1.79 |
| Tractive force/Heating surface | 1 : 10.55 |
| Grate area/Heating surface | 1 : 66.62 |
| Firebox/Tube surface | 1 : 8.59 |
| Total/Superheater | 1 : 3.29 |
