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Denver & Rio Grande Western classes L-131 and L-132
In order to achieve greater pulling power, the D&RGW further developed their Mallets from the L-95 and L-107 classes to the L-131 class with single steam expansion. With the wheel arrangement 2-8-8-2 and an axle load ...
General
| Property | Denver & Rio Grande Western classes L-131 and L-132 Remove |
|---|---|
| Built | 1930 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-8-8-2 (Mikado Mallet) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Denver & Rio Grande Western classes L-131 and L-132 Remove |
|---|---|
| Wheelbase | 19.15 m |
| Rigid wheelbase | 5.11 m |
| Total wheelbase | 32.92 m |
| Service weight | 301.6 t |
| Adhesive weight | 259.5 t |
| Axle load | 33.5 t |
| Total weight | 457.4 t |
| Water capacity | 68,137 l |
| Fuel capacity | 27.2 t (coal) |
Boiler
| Property | Denver & Rio Grande Western classes L-131 and L-132 Remove |
|---|---|
| Grate area | 12.681 m² |
| Firebox surface | 63.453 m² |
| Tube heating surface | 681.073 m² |
| Evaporative heating surface | 744.526 m² |
| Superheater surface | 325.533 m² |
| Total heating surface | 1,070.1 m² |
Power plant
| Property | Denver & Rio Grande Western classes L-131 and L-132 Remove |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 16.5 bar |
| Expansion type | simple expansion |
| Cylinders | four, 660 x 813 mm |
Power
| Property | Denver & Rio Grande Western classes L-131 and L-132 Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,474 kW (6,083 PS) |
| Starting effort | 623.2 kN |
Calculated values
| Property | Denver & Rio Grande Western classes L-131 and L-132 Remove |
|---|---|
| Factor of adhesion | 1 : 4.08 |
| Optimal speed | 43 km/h |
| Power-to-weight ratio | 14.8 kW/t |
| Heating Surface Equivalent | 1,712.9 m² |
| Cylinder volume/HSE | 1 : 650.17 |
| Adhesive weight/Total | 1 : 1.16 |
| Tractive force/Heating surface | 1 : 12.16 |
| Grate area/Heating surface | 1 : 84.38 |
| Firebox/Tube surface | 1 : 10.73 |
| Total/Superheater | 1 : 2.29 |
