Compare locomotives
Add a locomotive
Pennsylvania class I1s
To maximize the pulling power of ten-coupled freight locomotives, the PRR made use of its high permitted axle load and returned to the 2-10-0 wheel arrangement in 1916. The lack of a trailing axle did not allow for la...
| Pennsylvania class I1sRemove | |
|---|---|
| Variant | Baldwin - 1922 variant |
| Built | 1922-1923 |
| Manufacturers | Baldwin |
| Wheel arrangement | 1E |
| Gauge | 1435 mm |
| Length | |
| Service mass | 166242 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Pennsylvania class I1sBaldwin - 1922 variant |
|---|---|
| Built | 1922-1923 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-10-0 (Decapod) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Pennsylvania class I1sBaldwin - 1922 variant |
|---|---|
| Wheelbase | 9.80 m |
| Total wheelbase | 22.26 m |
| Service mass | 166.2 t |
| Adhesion mass | 151.7 t |
| Total mass | 248.8 t |
| Rigid wheelbase | 6.91 m |
| Axle load | 31.3 t |
| Water capacity | 34,069 l |
| Fuel capacity | 15.9 t (coal) |
Boiler
| Property | Pennsylvania class I1sBaldwin - 1922 variant |
|---|---|
| Grate area | 6.503 m² |
| Firebox surface | 28.986 m² |
| Tube heating surface | 418.622 m² |
| Evaporative heating surface | 447.608 m² |
| Superheater surface | 184.413 m² |
| Total heating surface | 632.0 m² |
Power plant
| Property | Pennsylvania class I1sBaldwin - 1922 variant |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 17.2 bar |
| Expansion type | simple expansion |
| Cylinders | two, 775 x 813 mm |
Power
| Property | Pennsylvania class I1sBaldwin - 1922 variant |
|---|---|
| Power source | steam |
| Estimated power | 2,461 kW (3,346 PS) |
| Starting effort | 427.0 kN |
Calculated values
| Property | Pennsylvania class I1sBaldwin - 1922 variant |
|---|---|
| Factor of adhesion | 1 : 3.49 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 14.8 kW/t |
| Heating Surface Equivalent | 961.4 m² |
| Cylinder volume/HSE | 1 : 797.04 |
| Adhesive weight/Total | 1 : 1.10 |
| Tractive force/Heating surface | 1 : 14.11 |
| Grate area/Heating surface | 1 : 97.19 |
| Firebox/Tube surface | 1 : 14.44 |
| Total/Superheater | 1 : 2.43 |
