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Delaware, Lackawanna & Western class Q-1
The Lackawanna was one of the first US railroads to adopt the 4-8-4 wheel arrangement. In contrast to the Northern Pacific , these were not called “Northern” here, but “Poconos”. They were seen here as the successor t...
General
| Property | Delaware, Lackawanna & Western class Q-1Remove |
|---|---|
| Built | 1927 |
| Manufacturers | ALCO |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Delaware, Lackawanna & Western class Q-1Remove |
|---|---|
| Wheelbase | 14.22 m |
| Rigid wheelbase | 6.10 m |
| Total wheelbase | 25.06 m |
| Service weight | 191 t |
| Adhesive weight | 122 t |
| Axle load | 30.5 t |
| Water capacity | 45,425 l |
| Fuel capacity | 14.5 t (coal) |
Boiler
| Property | Delaware, Lackawanna & Western class Q-1Remove |
|---|---|
| Grate area | 8.194 m² |
| Firebox surface | 45.801 m² |
| Tube heating surface | 436.645 m² |
| Evaporative heating surface | 482.446 m² |
| Superheater surface | 123.004 m² |
| Total heating surface | 605.5 m² |
Power plant
| Property | Delaware, Lackawanna & Western class Q-1Remove |
|---|---|
| Driver diameter | 1,956 mm |
| Boiler pressure | 17.2 bar |
| Expansion type | simple expansion |
| Cylinders | two, 686 x 813 mm |
Power
| Property | Delaware, Lackawanna & Western class Q-1Remove |
|---|---|
| Power source | steam |
| Estimated power | 3,356 kW (4,563 PS) |
| Starting effort | 286.4 kN |
Calculated values
| Property | Delaware, Lackawanna & Western class Q-1Remove |
|---|---|
| Factor of adhesion | 1 : 4.18 |
| Optimal speed | 72 km/h |
| Power-to-weight ratio | 17.6 kW/t |
| Heating Surface Equivalent | 957.5 m² |
| Cylinder volume/HSE | 1 : 627.16 |
| Adhesive weight/Total | 1 : 1.57 |
| Tractive force/Heating surface | 1 : 9.88 |
| Grate area/Heating surface | 1 : 73.89 |
| Firebox/Tube surface | 1 : 9.53 |
| Total/Superheater | 1 : 3.92 |
