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Denver & Rio Grande Western class K-28
When 20 years had passed since the later class K-27 was purchased from Baldwin, the D&RG purchased ten additional locomotives from ALCO-Schenectady. These were also Mikados with an outside frame, in which the cylinder...
General
| Property | Denver & Rio Grande Western class K-28Remove |
|---|---|
| Built | 1923 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 914 mm (Three feet) |
Dimensions and weights
| Property | Denver & Rio Grande Western class K-28Remove |
|---|---|
| Wheelbase | 8.79 m |
| Rigid wheelbase | 3.73 m |
| Total wheelbase | 16.31 m |
| Service weight | 70.8 t |
| Adhesive weight | 51.5 t |
| Axle load | 12.9 t |
| Total weight | 115.4 t |
| Water capacity | 18,927 l |
| Fuel capacity | 7.3 t (coal) |
Boiler
| Property | Denver & Rio Grande Western class K-28Remove |
|---|---|
| Grate area | 2.796 m² |
| Firebox surface | 9.476 m² |
| Tube heating surface | 138.611 m² |
| Evaporative heating surface | 148.087 m² |
| Superheater surface | 39.205 m² |
| Total heating surface | 187.3 m² |
Power plant
| Property | Denver & Rio Grande Western class K-28Remove |
|---|---|
| Driver diameter | 1,118 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 559 mm |
Power
| Property | Denver & Rio Grande Western class K-28Remove |
|---|---|
| Power source | steam |
| Estimated power | 839 kW (1,141 PS) |
| Starting effort | 122.5 kN |
Calculated values
| Property | Denver & Rio Grande Western class K-28Remove |
|---|---|
| Factor of adhesion | 1 : 4.12 |
| Optimal speed | 42 km/h |
| Power-to-weight ratio | 11.9 kW/t |
| Heating Surface Equivalent | 273.9 m² |
| Cylinder volume/HSE | 1 : 669.94 |
| Adhesive weight/Total | 1 : 1.37 |
| Tractive force/Heating surface | 1 : 13.66 |
| Grate area/Heating surface | 1 : 66.99 |
| Firebox/Tube surface | 1 : 14.63 |
| Total/Superheater | 1 : 3.78 |
