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Pennsylvania class L1s
The PRR's class L1s was a Mikado that received the same boiler as the K4s class Pacific. Despite the great performance of this boiler with the Belpaire firebox , these locomotives were not equipped with a stoker ex wo...
General
| Property | Pennsylvania class L1sRemove |
|---|---|
| Built | 1914-1919 |
| Manufacturers | Altoona, Baldwin, Lima |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Pennsylvania class L1sRemove |
|---|---|
| Wheelbase | 11.09 m |
| Rigid wheelbase | 5.19 m |
| Total wheelbase | 22.02 m |
| Service weight | 142.9 t |
| Adhesive weight | 108 t |
| Axle load | 26.8 t |
| Total weight | 214.5 t |
| Water capacity | 26,498 l |
| Fuel capacity | 11.3 t (coal) |
Boiler
| Property | Pennsylvania class L1sRemove |
|---|---|
| Grate area | 6.503 m² |
| Firebox surface | 28.01 m² |
| Tube heating surface | 346.854 m² |
| Evaporative heating surface | 374.864 m² |
| Superheater surface | 107.21 m² |
| Total heating surface | 482.1 m² |
Power plant
| Property | Pennsylvania class L1sRemove |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 14.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 686 x 762 mm |
Power
| Property | Pennsylvania class L1sRemove |
|---|---|
| Power source | steam |
| Estimated power | 2,312 kW (3,143 PS) |
| Starting effort | 273.4 kN |
Calculated values
| Property | Pennsylvania class L1sRemove |
|---|---|
| Factor of adhesion | 1 : 3.87 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 16.2 kW/t |
| Heating Surface Equivalent | 729.3 m² |
| Cylinder volume/HSE | 1 : 771.87 |
| Adhesive weight/Total | 1 : 1.32 |
| Tractive force/Heating surface | 1 : 11.85 |
| Grate area/Heating surface | 1 : 74.13 |
| Firebox/Tube surface | 1 : 12.38 |
| Total/Superheater | 1 : 3.50 |
