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Western Maryland class J-1
The J-1 was one of the last newly developed classes of steam locomotives of any US railroad. Inspiration came from experiences with the Reading T-1 4-8-4 that was also operated by the WM. So they ordered twelve 4-8-4 ...
| Western Maryland class J-1Remove | |
|---|---|
| Variant | Standard |
| Built | 1947 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2D2 |
| Gauge | 1435 mm |
| Length | 33579 mm |
| Service mass | 229745 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Western Maryland class J-1 Standard Remove |
|---|---|
| Built | 1947 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Western Maryland class J-1 Standard Remove |
|---|---|
| Length | 33.58 m |
| Wheelbase | 14.28 m |
| Total wheelbase | 28.96 m |
| Empty mass | 208.2 t |
| Service mass | 229.7 t |
| Adhesion mass | 131.5 t |
| Total mass | 420.9 t |
| Rigid wheelbase | 5.87 m |
| Axle load | 32.9 t |
| Water capacity | 83,279 l |
| Fuel capacity | 27.2 t (coal) |
Boiler
| Property | Western Maryland class J-1 Standard Remove |
|---|---|
| Grate area | 9.913 m² |
| Firebox surface | 53.233 m² |
| Tube heating surface | 408.867 m² |
| Evaporative heating surface | 462.1 m² |
| Superheater surface | 201.6 m² |
| Total heating surface | 663.7 m² |
Power plant
| Property | Western Maryland class J-1 Standard Remove |
|---|---|
| Driver diameter | 1,753 mm |
| Boiler pressure | 17.6 bar |
| Expansion type | simple expansion |
| Cylinders | two, 673 x 813 mm |
Power
| Property | Western Maryland class J-1 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,101 kW (5,576 PS) |
| Starting effort | 314.0 kN |
Calculated values
| Property | Western Maryland class J-1 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.11 |
| Optimal speed | 80 km/h |
| Power-to-weight ratio | 17.9 kW/t |
| Heating Surface Equivalent | 1,131.5 m² |
| Cylinder volume/HSE | 1 : 511.24 |
| Adhesive weight/Total | 1 : 1.75 |
| Tractive force/Heating surface | 1 : 9.88 |
| Grate area/Heating surface | 1 : 66.95 |
| Firebox/Tube surface | 1 : 7.68 |
| Total/Superheater | 1 : 2.29 |
