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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 ...
| Denver & Rio Grande Western classes L-131 and L-132Remove | |
|---|---|
| Variant | |
| Built | 1927 |
| Manufacturers | ALCO |
| Wheel arrangement | (1D)D1 ma |
| Gauge | 1435 mm |
| Length | |
| Service mass | 294382 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Denver & Rio Grande Western classes L-131 and L-132Remove |
|---|---|
| Built | 1927 |
| Manufacturers | ALCO |
| Wheel arrangement | 2-8-8-2 (Mikado Mallet) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Denver & Rio Grande Western classes L-131 and L-132Remove |
|---|---|
| Wheelbase | 19.15 m |
| Total wheelbase | 32.92 m |
| Service mass | 294.4 t |
| Adhesion mass | 253.8 t |
| Total mass | 450 t |
| Rigid wheelbase | 5.11 m |
| Axle load | 32.2 t |
| Water capacity | 68,137 l |
| Fuel capacity | 27.2 t (coal) |
Boiler
| Property | Denver & Rio Grande Western classes L-131 and L-132Remove |
|---|---|
| Grate area | 12.681 m² |
| Firebox surface | 66.426 m² |
| Tube heating surface | 608.516 m² |
| Evaporative heating surface | 674.941 m² |
| Superheater surface | 213.213 m² |
| Total heating surface | 888.2 m² |
Power plant
| Property | Denver & Rio Grande Western classes L-131 and L-132Remove |
|---|---|
| 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-132Remove |
|---|---|
| Power source | steam |
| Estimated power | 4,027 kW (5,475 PS) |
| Starting effort | 623.2 kN |
Calculated values
| Property | Denver & Rio Grande Western classes L-131 and L-132Remove |
|---|---|
| Factor of adhesion | 1 : 4.00 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 13.7 kW/t |
| Heating Surface Equivalent | 1,433.5 m² |
| Cylinder volume/HSE | 1 : 776.87 |
| Adhesive weight/Total | 1 : 1.16 |
| Tractive force/Heating surface | 1 : 14.65 |
| Grate area/Heating surface | 1 : 70.04 |
| Firebox/Tube surface | 1 : 9.16 |
| Total/Superheater | 1 : 3.17 |
