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Weyerhaeuser Timber 2-6-6-2ST
The Weyerhaeuser Timber Co. was one of the American logging railroads which used Mallets instead of geared steam locomotives for their steep and winding lines. They hoped that these would be easier to maintain than a ...
General
| Property | Weyerhaeuser Timber 2-6-6-2ST 110/2, 112, 9 |
|---|---|
| Built | 1936 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-6-6-2ST (Mallet Mogul) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Weyerhaeuser Timber 2-6-6-2ST 110/2, 112, 9 |
|---|---|
| Wheelbase | 11.51 m |
| Rigid wheelbase | 2.44 m |
| Service weight | 112 t |
| Adhesive weight | 95.3 t |
| Water capacity | 9,464 l |
| Fuel capacity | 4,542 l (oil) |
Boiler
| Property | Weyerhaeuser Timber 2-6-6-2ST 110/2, 112, 9 |
|---|---|
| Grate area | 2.434 m² |
| Firebox surface | 11.892 m² |
| Tube heating surface | 141.77 m² |
| Evaporative heating surface | 153.662 m² |
| Superheater surface | 33.259 m² |
| Total heating surface | 186.9 m² |
Power plant
| Property | Weyerhaeuser Timber 2-6-6-2ST 110/2, 112, 9 |
|---|---|
| Driver diameter | 1,118 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 457 x 610 mm and LP: 711 x 610 mm |
Power
| Property | Weyerhaeuser Timber 2-6-6-2ST 110/2, 112, 9 |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 189.1 kN |
| Starting effort simple | 227.0 kN |
Calculated values
| Property | Weyerhaeuser Timber 2-6-6-2ST 110/2, 112, 9 |
|---|---|
| Factor of adhesion | 1 : 4.94 |
| Optimal speed | 26 km/h |
| Power-to-weight ratio | 7.3 kW/t |
| Heating Surface Equivalent | 279.6 m² |
| Cylinder volume/HSE | 1 : 1,581.78 |
| Adhesive weight/Total | 1 : 1.18 |
| Tractive force/Heating surface | 1 : 21.13 |
| Grate area/Heating surface | 1 : 76.80 |
| Firebox/Tube surface | 1 : 11.92 |
| Total/Superheater | 1 : 4.62 |
