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Atlantic Coast Line class R-1
In 1938, the Atlantic Coast Line had Baldwin build twelve 4-8-4 Class R-1 locomotives, also known as Class 1800 because of their numbers, for express service between Richmond, Virginia and Jacksonville, Florida. Their...
General
| Property | Atlantic Coast Line class R-1Remove |
|---|---|
| Built | 1938 |
| Manufacturers | Baldwin |
| Wheel arrangement | 4-8-4 (Northern) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Atlantic Coast Line class R-1Remove |
|---|---|
| Wheelbase | 14.55 m |
| Rigid wheelbase | 6.33 m |
| Total wheelbase | 29.85 m |
| Service weight | 208.8 t |
| Adhesive weight | 119.4 t |
| Axle load | 29.8 t |
| Total weight | 406.1 t |
| Water capacity | 90,850 l |
| Fuel capacity | 24.5 t (coal) |
Boiler
| Property | Atlantic Coast Line class R-1Remove |
|---|---|
| Grate area | 9.081 m² |
| Firebox surface | 52.769 m² |
| Tube heating surface | 388.8 m² |
| Evaporative heating surface | 441.569 m² |
| Superheater surface | 132.387 m² |
| Total heating surface | 574.0 m² |
Power plant
| Property | Atlantic Coast Line class R-1Remove |
|---|---|
| Driver diameter | 2,032 mm |
| Boiler pressure | 19 bar |
| Expansion type | simple expansion |
| Cylinders | two, 686 x 762 mm |
Power
| Property | Atlantic Coast Line class R-1Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,027 kW (5,475 PS) |
| Top speed | 145 km/h |
| Starting effort | 284.2 kN |
Calculated values
| Property | Atlantic Coast Line class R-1Remove |
|---|---|
| Factor of adhesion | 1 : 4.12 |
| Optimal speed | 87 km/h |
| Power-to-weight ratio | 19.3 kW/t |
| Heating Surface Equivalent | 970.2 m² |
| Cylinder volume/HSE | 1 : 580.25 |
| Adhesive weight/Total | 1 : 1.75 |
| Tractive force/Heating surface | 1 : 10.34 |
| Grate area/Heating surface | 1 : 63.20 |
| Firebox/Tube surface | 1 : 7.37 |
| Total/Superheater | 1 : 3.34 |
