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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 ...
| Indian Railways class YDRemove | |
|---|---|
| Variant | Standard |
| Built | 1927-1953 |
| Manufacturers | AEG;Henschel;Nasymyth, Wilson & Co.;Nippon Sharyō;SLM;Škoda;Vulcan Foundry;Ajmer |
| Wheel arrangement | 1D1 |
| Gauge | 1000 mm |
| Length | 18313 mm |
| Service mass | 57508 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Indian Railways class YD Standard Remove |
|---|---|
| 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 |
Dimensions and weights
| Property | Indian Railways class YD Standard Remove |
|---|---|
| Length | 18.31 m |
| Wheelbase | 8.46 m |
| Total wheelbase | 15.37 m |
| Empty mass | 52 t |
| Service mass | 57.5 t |
| Adhesion mass | 40.3 t |
| Total mass | 97.4 t |
| Rigid wheelbase | 4.09 m |
| Axle load | 10.2 t |
| Water capacity | 13,639 l |
| Fuel capacity | 8.1 t (coal) |
Boiler
| Property | Indian Railways class YD Standard Remove |
|---|---|
| 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 YD Standard Remove |
|---|---|
| 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 YD Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 746 kW (1,014 PS) |
| Starting effort | 98.3 kN |
Calculated values
| Property | Indian Railways class YD Standard Remove |
|---|---|
| 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 |
