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Louisville & Nashville class M-1
The L&N used a total of 42 Berkshires which were commonly known as “Big Emmas”. They were similar to the Berkshires designed by the Van Sweringens for the Nickel Plate Road and also used by other railroads, but they w...
| Louisville & Nashville class M-1Remove | |
|---|---|
| Variant | Standard |
| Built | 1942, 1949 |
| Manufacturers | Baldwin;Lima |
| Wheel arrangement | 1D2 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 202847 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Louisville & Nashville class M-1 Standard Remove |
|---|---|
| Built | 1942, 1949 |
| Manufacturers | Baldwin, Lima |
| Wheel arrangement | 2-8-4 (Berkshire) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Louisville & Nashville class M-1 Standard Remove |
|---|---|
| Wheelbase | 12.90 m |
| Total wheelbase | 28.47 m |
| Service mass | 202.8 t |
| Adhesion mass | 121.7 t |
| Total mass | 377.1 t |
| Rigid wheelbase | 5.56 m |
| Axle load | 30.9 t |
| Water capacity | 83,279 l |
| Fuel capacity | 22.7 t (coal) |
Boiler
| Property | Louisville & Nashville class M-1 Standard Remove |
|---|---|
| Grate area | 8.38 m² |
| Firebox surface | 43.042 m² |
| Tube heating surface | 390.908 m² |
| Evaporative heating surface | 433.951 m² |
| Superheater surface | 177.259 m² |
| Total heating surface | 611.2 m² |
Power plant
| Property | Louisville & Nashville class M-1 Standard Remove |
|---|---|
| Driver diameter | 1,753 mm |
| Boiler pressure | 18.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 635 x 813 mm |
Power
| Property | Louisville & Nashville class M-1 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 3,430 kW (4,664 PS) |
| Starting effort | 290.4 kN |
| Starting effort booster | 62.72 kN |
Calculated values
| Property | Louisville & Nashville class M-1 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.11 |
| Optimal speed | 72 km/h |
| Power-to-weight ratio | 16.9 kW/t |
| Heating Surface Equivalent | 1,003.7 m² |
| Cylinder volume/HSE | 1 : 512.93 |
| Adhesive weight/Total | 1 : 1.67 |
| Tractive force/Heating surface | 1 : 9.92 |
| Grate area/Heating surface | 1 : 72.94 |
| Firebox/Tube surface | 1 : 9.08 |
| Total/Superheater | 1 : 2.45 |
