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Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”
When several Colombian railways were unified under state control in 1924, P.C. Dewhurst designed a standard locomotive to be used on lines with three foot and meter gauge . They were 4-8-0 or twelve-wheelers, also cal...
| Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Remove | |
|---|---|
| Variant | Pacífico (Kitson) |
| Built | 1924-1951 |
| Manufacturers | Baldwin;BMAG;Kitson & Co.;Haine-Saint-Pierre;Hawthorn, Leslie & Co.;Tubize; Škoda |
| Wheel arrangement | 2D |
| Gauge | 914 mm |
| Length | |
| Service mass | 50349 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Pacífico (Kitson) |
|---|---|
| Built | 1924-1951 |
| Manufacturers | Baldwin, BMAG, Kitson & Co., Haine-Saint-Pierre, Hawthorn, Leslie & Co., Tubize, Škoda |
| Wheel arrangement | 4-8-0 (Twelve-wheeler) |
| Gauge | 914 mm |
Dimensions and weights
| Property | Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Pacífico (Kitson) |
|---|---|
| Wheelbase | 6.50 m |
| Total wheelbase | 14.02 m |
| Service mass | 50.3 t |
| Adhesion mass | 41.5 t |
| Total mass | 80.7 t |
| Rigid wheelbase | 2.29 m |
| Axle load | 10.5 t |
| Water capacity | 12,503 l |
| Fuel capacity | 5.3 t (coal) |
Boiler
| Property | Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Pacífico (Kitson) |
|---|---|
| Grate area | 2.787 m² |
| Firebox surface | 9.105 m² |
| Tube heating surface | 97.92 m² |
| Evaporative heating surface | 107.024 m² |
| Superheater surface | 22.668 m² |
| Total heating surface | 129.7 m² |
Power plant
| Property | Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Pacífico (Kitson) |
|---|---|
| Driver diameter | 1,016 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 432 x 559 mm |
Power
| Property | Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Pacífico (Kitson) |
|---|---|
| Power source | steam |
| Estimated power | 708 kW (963 PS) |
| Starting effort | 108.2 kN |
Calculated values
| Property | Ferrocarriles Nacionales Dewhurst Standard 4-8-0 “Docerruedas”Pacífico (Kitson) |
|---|---|
| Factor of adhesion | 1 : 3.76 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 14.1 kW/t |
| Heating Surface Equivalent | 197.9 m² |
| Cylinder volume/HSE | 1 : 827.04 |
| Adhesive weight/Total | 1 : 1.21 |
| Tractive force/Heating surface | 1 : 17.42 |
| Grate area/Heating surface | 1 : 46.53 |
| Firebox/Tube surface | 1 : 10.75 |
| Total/Superheater | 1 : 4.72 |
