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Indian Railways class YD
The class YD was a metre-gauge goods locomotive developed in accordance with the Indian Railway Standard (IRS) rules. Its direct basis were ten Mikados built in 1927 by the Vulcan Foundry for the Assam Bengal Railway ...
General
| Property | Indian Railways class YDRemove |
|---|---|
| Built | 1927-1953 |
| Manufacturers | AEG, Henschel, Nasymyth, Wilson & Co., Nippon Sharyō, SLM, Škoda, Vulcan Foundry, Ajmer |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,000 mm (Meter gauge) |
Dimensions and weights
| Property | Indian Railways class YDRemove |
|---|---|
| Length | 18.31 m |
| Wheelbase | 8.46 m |
| Rigid wheelbase | 4.09 m |
| Total wheelbase | 15.37 m |
| Empty weight | 52 t |
| Service weight | 57.5 t |
| Adhesive weight | 40.3 t |
| Axle load | 10.2 t |
| Total weight | 97.4 t |
| Water capacity | 13,639 l |
| Fuel capacity | 8.1 t (coal) |
Boiler
| Property | Indian Railways class YDRemove |
|---|---|
| Grate area | 2.415 m² |
| Firebox surface | 13.657 m² |
| Tube heating surface | 115.943 m² |
| Evaporative heating surface | 129.6 m² |
| Superheater surface | 28.8 m² |
| Total heating surface | 158.4 m² |
Power plant
| Property | Indian Railways class YDRemove |
|---|---|
| Driver diameter | 1,219 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 432 x 610 mm |
Power
| Property | Indian Railways class YDRemove |
|---|---|
| Power source | steam |
| Estimated power | 746 kW (1,014 PS) |
| Starting effort | 98.3 kN |
Calculated values
| Property | Indian Railways class YDRemove |
|---|---|
| Factor of adhesion | 1 : 4.02 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 13.0 kW/t |
| Heating Surface Equivalent | 255.5 m² |
| Cylinder volume/HSE | 1 : 698.82 |
| Adhesive weight/Total | 1 : 1.43 |
| Tractive force/Heating surface | 1 : 12.97 |
| Grate area/Heating surface | 1 : 65.59 |
| Firebox/Tube surface | 1 : 8.49 |
| Total/Superheater | 1 : 4.50 |
