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Madras & Southern Mahratta class 477
These Madras & Southern Mahratta locomotives were basically based on the design of the Indian Standards Committee, but as an innovation they were operated with superheated steam and had a slightly reduced boiler press...
| Madras & Southern Mahratta class 477Remove | |
|---|---|
| Variant | |
| Built | 1910 |
| Manufacturers | Robert Stephenson & Co. |
| Wheel arrangement | 1D |
| Gauge | 1676 mm |
| Length | |
| Service mass | 74578 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Madras & Southern Mahratta class 477Remove |
|---|---|
| Built | 1910 |
| Manufacturers | Robert Stephenson & Co. |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,676 mm |
Dimensions and weights
| Property | Madras & Southern Mahratta class 477Remove |
|---|---|
| Wheelbase | 7.62 m |
| Total wheelbase | 15.46 m |
| Service mass | 74.6 t |
| Adhesion mass | 65.3 t |
| Total mass | 139.4 t |
| Rigid wheelbase | 4.88 m |
| Axle load | 16.3 t |
| Water capacity | 18,185 l |
| Fuel capacity | 7.6 t (coal) |
Boiler
| Property | Madras & Southern Mahratta class 477Remove |
|---|---|
| Grate area | 2.973 m² |
| Firebox surface | 15.515 m² |
| Tube heating surface | 135.081 m² |
| Evaporative heating surface | 150.596 m² |
| Superheater surface | 34.857 m² |
| Total heating surface | 185.5 m² |
Power plant
| Property | Madras & Southern Mahratta class 477Remove |
|---|---|
| Driver diameter | 1,435 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | two, 559 x 660 mm |
Power
| Property | Madras & Southern Mahratta class 477Remove |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 134.7 kN |
Calculated values
| Property | Madras & Southern Mahratta class 477Remove |
|---|---|
| Factor of adhesion | 1 : 4.76 |
| Optimal speed | 37 km/h |
| Power-to-weight ratio | 11.0 kW/t |
| Heating Surface Equivalent | 297.9 m² |
| Cylinder volume/HSE | 1 : 1,087.40 |
| Adhesive weight/Total | 1 : 1.14 |
| Tractive force/Heating surface | 1 : 15.17 |
| Grate area/Heating surface | 1 : 62.38 |
| Firebox/Tube surface | 1 : 8.71 |
| Total/Superheater | 1 : 4.32 |
