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Darjeeling Himalayan class B
The Darjeeling Himalayan Railway's best-known and longest-lasting locomotive is the class B, which was built by several manufacturers from 1889 and is still in use today. Although the DHR had also procured larger loco...
| Darjeeling Himalayan class BRemove | |
|---|---|
| Variant | Standard |
| Built | 1889-1925 |
| Manufacturers | Sharp, Stewart & Co.;North British;Baldwin |
| Wheel arrangement | B st |
| Gauge | 610 mm |
| Length | |
| Service mass | 15585 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Darjeeling Himalayan class B Standard Remove |
|---|---|
| Built | 1889-1925 |
| Manufacturers | Sharp, Stewart & Co., North British, Baldwin |
| Wheel arrangement | 0-4-0ST (Four-coupled) |
| Gauge | 610 mm |
Dimensions and weights
| Property | Darjeeling Himalayan class B Standard Remove |
|---|---|
| Wheelbase | 1.68 m |
| Service mass | 15.6 t |
| Adhesion mass | 15.6 t |
| Rigid wheelbase | 1.68 m |
| Axle load | 7.9 t |
| Water capacity | 1,726 l |
| Fuel capacity | 0.8 t (coal) |
Boiler
| Property | Darjeeling Himalayan class B Standard Remove |
|---|---|
| Grate area | 0.836 m² |
| Firebox surface | 3.716 m² |
| Tube heating surface | 25.641 m² |
| Evaporative heating surface | 29.357 m² |
| Total heating surface | 29.4 m² |
Power plant
| Property | Darjeeling Himalayan class B Standard Remove |
|---|---|
| Driver diameter | 660 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 279 x 356 mm |
Power
| Property | Darjeeling Himalayan class B Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 97 kW (132 PS) |
| Starting effort | 34.5 kN |
Calculated values
| Property | Darjeeling Himalayan class B Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.43 |
| Optimal speed | 18 km/h |
| Power-to-weight ratio | 6.2 kW/t |
| Heating Surface Equivalent | 47.9 m² |
| Cylinder volume/HSE | 1 : 909.63 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 24.54 |
| Grate area/Heating surface | 1 : 35.12 |
| Firebox/Tube surface | 1 : 6.90 |
