| Queensland Railways 4D10 class | |
| Powertype: | Steam |
| Builder: | North Ipswich Railway Workshops |
| Serialnumber: | 4-6 |
| Builddate: | 1884/85 |
| Whytetype: | 2-4-2T |
| Axleload: | 11.5t |
| Locoweight: | 24.1t |
| Locotenderweight: | 24.1t |
| Fueltype: | Coal |
| Fuelcap: | 1.5 tonnes |
| Watercap: | 550 gallons |
| Tendercap: | 3 tonnes |
| Boiler: | NIRW |
| Boilerpressure: | 120psi |
| Fireboxarea: | 7.1 square feet |
| Cylindercount: | 2 outside |
| Cylindersize: | 10x |
| Operator: | Queensland Railways |
| Fleetnumbers: | 6, 9-11, 72-74 |
| Deliverydate: | 1884 |
| Firstrundate: | 1884 |
| Lastrundate: | 1902 |
| Retiredate: | 1902 |
| Withdrawndate: | 1902 |
| Preservedunits: | 10 (Boiler Only) |
| Scrapdate: | 1903 |
| Disposition: | all scrapped, 10's boiler is at Caboolture[1] |
The Queensland Railways 4D10 class locomotive was a class of 2-4-2T steam locomotives operated by the Queensland Railways.
In September 1877, a Select Committee recommended no more locomotives be built in the colony. However some materials had already been purchased for proposed new locomotives. In 1884/85 these were put to use to build four 2-4-2T locomotives at North Ipswich Railway Workshops. Per Queensland Railway's classification system they were designated the 4D10 class in 1890, the 4 representing the number of driving wheels, the D that it was a tank locomotive, and the 10 the cylinder diameter in inches.[2] A further four A10 Neilson class were converted to 4D10s.[3]
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