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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 Remove |
|---|---|
| Built | 1929 |
| 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 Remove |
|---|---|
| Wheelbase | 11.51 m |
| Rigid wheelbase | 2.44 m |
| Service weight | 119.7 t |
| Adhesive weight | 99.8 t |
| Water capacity | 12,113 l |
| Fuel capacity | 4,542 l (oil) |
Boiler
| Property | Weyerhaeuser Timber 2-6-6-2ST Remove |
|---|---|
| Grate area | 3.855 m² |
| Firebox surface | 13.192 m² |
| Tube heating surface | 200.485 m² |
| Evaporative heating surface | 213.677 m² |
| Superheater surface | 54.163 m² |
| Total heating surface | 267.8 m² |
Power plant
| Property | Weyerhaeuser Timber 2-6-6-2ST Remove |
|---|---|
| Driver diameter | 1,118 mm |
| Boiler pressure | 14.5 bar |
| Expansion type | simple expansion |
| Cylinders | four, 406 x 610 mm |
Power
| Property | Weyerhaeuser Timber 2-6-6-2ST Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,119 kW (1,521 PS) |
| Starting effort | 221.7 kN |
Calculated values
| Property | Weyerhaeuser Timber 2-6-6-2ST Remove |
|---|---|
| Factor of adhesion | 1 : 4.41 |
| Optimal speed | 31 km/h |
| Power-to-weight ratio | 9.3 kW/t |
| Heating Surface Equivalent | 388.0 m² |
| Cylinder volume/HSE | 1 : 815.29 |
| Adhesive weight/Total | 1 : 1.20 |
| Tractive force/Heating surface | 1 : 17.29 |
| Grate area/Heating surface | 1 : 69.48 |
| Firebox/Tube surface | 1 : 15.20 |
| Total/Superheater | 1 : 3.95 |
