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Caddo & Choctaw No. 4
The locomotive running as Oregon, Pacific and Eastern No. 19 was built by Baldwin in 1915 with works number 42000 and is operational again since March 16, 2026. Originally built for the Caddo and Choctaw Railroad as t...
| Caddo & Choctaw No. 4Remove | |
|---|---|
| Variant | Standard |
| Built | 1915 |
| Manufacturers | Baldwin |
| Wheel arrangement | 1D1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 81193 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Caddo & Choctaw No. 4 Standard Remove |
|---|---|
| Built | 1915 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Caddo & Choctaw No. 4 Standard Remove |
|---|---|
| Wheelbase | 8.26 m |
| Total wheelbase | 17.44 m |
| Service mass | 81.2 t |
| Adhesion mass | 64.2 t |
| Total mass | 131.1 t |
| Rigid wheelbase | 3.99 m |
| Axle load | 16.1 t |
| Water capacity | 20,820 l |
| Fuel capacity | 9.1 t (coal) |
Boiler
| Property | Caddo & Choctaw No. 4 Standard Remove |
|---|---|
| Grate area | 3.837 m² |
| Firebox surface | 16.537 m² |
| Tube heating surface | 215.721 m² |
| Evaporative heating surface | 232.258 m² |
| Superheater surface | 51.375 m² |
| Total heating surface | 283.6 m² |
Power plant
| Property | Caddo & Choctaw No. 4 Standard Remove |
|---|---|
| Driver diameter | 1,219 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | two, 521 x 711 mm |
Power
| Property | Caddo & Choctaw No. 4 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 932 kW (1,267 PS) |
| Starting effort | 162.2 kN |
Calculated values
| Property | Caddo & Choctaw No. 4 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.88 |
| Optimal speed | 35 km/h |
| Power-to-weight ratio | 11.5 kW/t |
| Heating Surface Equivalent | 417.7 m² |
| Cylinder volume/HSE | 1 : 725.15 |
| Adhesive weight/Total | 1 : 1.27 |
| Tractive force/Heating surface | 1 : 11.94 |
| Grate area/Heating surface | 1 : 73.92 |
| Firebox/Tube surface | 1 : 13.04 |
| Total/Superheater | 1 : 4.52 |
