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New South Wales class AD60
The AD60 was a class of Garratts for freight traffic introduced by the New South Wales Government Railways in 1952. Due to a limited axle load of 16 tons, they had been designed as 4-8-4+4-8-4. They got roller bearing...
| New South Wales class AD60Remove | |
|---|---|
| Variant | |
| Built | 1952-1956 |
| Manufacturers | Beyer, Peacock & Co. |
| Wheel arrangement | (2D2)(2D2) t ga |
| Gauge | 1435 mm |
| Length | 33096 mm |
| Service mass | 254919 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | New South Wales class AD60Remove |
|---|---|
| Built | 1952-1956 |
| Manufacturers | Beyer, Peacock & Co. |
| Wheel arrangement | 4-8-4+4-8-4T (Double Northern (Garratt)) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | New South Wales class AD60Remove |
|---|---|
| Length | 33.10 m |
| Wheelbase | 29.77 m |
| Service mass | 254.9 t |
| Adhesion mass | 127.9 t |
| Rigid wheelbase | 4.50 m |
| Axle load | 16 t |
| Water capacity | 42,245 l |
| Fuel capacity | 14.2 t (coal) |
Boiler
| Property | New South Wales class AD60Remove |
|---|---|
| Grate area | 5.899 m² |
| Firebox surface | 22.111 m² |
| Tube heating surface | 259.386 m² |
| Evaporative heating surface | 281.496 m² |
| Superheater surface | 69.677 m² |
| Total heating surface | 351.2 m² |
Power plant
| Property | New South Wales class AD60Remove |
|---|---|
| Driver diameter | 1,397 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | four, 489 x 660 mm |
Power
| Property | New South Wales class AD60Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,603 kW (2,179 PS) |
| Starting effort | 264.9 kN |
Calculated values
| Property | New South Wales class AD60Remove |
|---|---|
| Factor of adhesion | 1 : 4.74 |
| Optimal speed | 37 km/h |
| Power-to-weight ratio | 6.3 kW/t |
| Heating Surface Equivalent | 531.4 m² |
| Cylinder volume/HSE | 1 : 933.38 |
| Adhesive weight/Total | 1 : 1.99 |
| Tractive force/Heating surface | 1 : 15.76 |
| Grate area/Heating surface | 1 : 59.53 |
| Firebox/Tube surface | 1 : 11.73 |
| Total/Superheater | 1 : 4.04 |
