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Sierra Railway No. 20 and 22
In 1916, Baldwin delivered the first superheated Consolidation to the Sierra Railway that got the number 20. Its works number had been 43344. Compared to the earlier No. 18 delivered in 1906, it had the same main dime...
| Sierra Railway No. 20 and 22Remove | |
|---|---|
| Variant | |
| Built | 1920 |
| Manufacturers | Baldwin |
| Wheel arrangement | 1D |
| Gauge | 1435 mm |
| Length | |
| Service mass | 54885 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Sierra Railway No. 20 and 22Remove |
|---|---|
| Built | 1920 |
| Manufacturers | Baldwin |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Sierra Railway No. 20 and 22Remove |
|---|---|
| Wheelbase | 5.99 m |
| Service mass | 54.9 t |
| Adhesion mass | 48.5 t |
| Total mass | 93.2 t |
| Rigid wheelbase | 3.71 m |
| Axle load | 12.1 t |
| Water capacity | 15,142 l |
| Fuel capacity | 3,785 l (oil) |
Boiler
| Property | Sierra Railway No. 20 and 22Remove |
|---|---|
| Grate area | 2.062 m² |
| Firebox surface | 12.542 m² |
| Tube heating surface | 87.329 m² |
| Evaporative heating surface | 99.871 m² |
| Superheater surface | 21.461 m² |
| Total heating surface | 121.3 m² |
Power plant
| Property | Sierra Railway No. 20 and 22Remove |
|---|---|
| Driver diameter | 1,067 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 559 mm |
Power
| Property | Sierra Railway No. 20 and 22Remove |
|---|---|
| Power source | steam |
| Estimated power | 708 kW (963 PS) |
| Starting effort | 115.5 kN |
Calculated values
| Property | Sierra Railway No. 20 and 22Remove |
|---|---|
| Factor of adhesion | 1 : 4.12 |
| Optimal speed | 37 km/h |
| Power-to-weight ratio | 12.9 kW/t |
| Heating Surface Equivalent | 205.5 m² |
| Cylinder volume/HSE | 1 : 892.83 |
| Adhesive weight/Total | 1 : 1.13 |
| Tractive force/Heating surface | 1 : 19.88 |
| Grate area/Heating surface | 1 : 58.84 |
| Firebox/Tube surface | 1 : 6.96 |
| Total/Superheater | 1 : 4.65 |
