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Denver & Rio Grande Western class K-27
The K-27 class was the last compound locomotive built for the D&RGW. The “K” stood for “Mikado” and the number for starting tractive effort of 27,000 pounds . They had four compound cylinders and was of the Vauclain t...
| Denver & Rio Grande Western class K-27Remove | |
|---|---|
| Variant | rebuilt simple |
| Built | 1907-1911 |
| Manufacturers | D&RGW |
| Wheel arrangement | 1D1 |
| Gauge | 914 mm |
| Length | |
| Service mass | 62074 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Denver & Rio Grande Western class K-27rebuilt simple |
|---|---|
| Built | 1907-1911 |
| Manufacturers | D&RGW |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 914 mm |
Dimensions and weights
| Property | Denver & Rio Grande Western class K-27rebuilt simple |
|---|---|
| Wheelbase | 7.47 m |
| Total wheelbase | 15.56 m |
| Service mass | 62.1 t |
| Adhesion mass | 47.3 t |
| Total mass | 99.9 t |
| Rigid wheelbase | 3.48 m |
| Axle load | 12.5 t |
| Water capacity | 15,520 l |
| Fuel capacity | 7.7 t (coal) |
Boiler
| Property | Denver & Rio Grande Western class K-27rebuilt simple |
|---|---|
| Grate area | 2.806 m² |
| Firebox surface | 9.848 m² |
| Tube heating surface | 188.315 m² |
| Evaporative heating surface | 198.162 m² |
| Total heating surface | 198.2 m² |
Power plant
| Property | Denver & Rio Grande Western class K-27rebuilt simple |
|---|---|
| Driver diameter | 1,016 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 432 x 559 mm |
Power
| Property | Denver & Rio Grande Western class K-27rebuilt simple |
|---|---|
| Power source | steam |
| Estimated power | 671 kW (912 PS) |
| Starting effort | 120.2 kN |
Calculated values
| Property | Denver & Rio Grande Western class K-27rebuilt simple |
|---|---|
| Factor of adhesion | 1 : 3.86 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 10.8 kW/t |
| Heating Surface Equivalent | 247.4 m² |
| Cylinder volume/HSE | 1 : 661.51 |
| Adhesive weight/Total | 1 : 1.31 |
| Tractive force/Heating surface | 1 : 12.67 |
| Grate area/Heating surface | 1 : 70.62 |
| Firebox/Tube surface | 1 : 19.12 |
