HO Scale with factory fitted digital on board. This model is in weathered paint work.

The NSWGR AD60 class Beyer-Garratt was one of only two 4-8-4+4-8-4 type Garratts in the world. Fifty were ordered from Beyer, Peacock and Co. of Manchester, England, in two batches of 25, the first being placed in service in 1952 and the last in 1957. Principal specifications were 200 lb/sq. in. boiler pressure, 19¼ x 26” cylinders and 4’7” diam. coupled wheels. Modern features included long-travel Walschaerts valve gear, cast one-piece engine beds from the USA, power reverse, mechanical stoker and roller bearings on all axles and on the big end and main driving crankpin bearings. Engines in the initial batch weighed 256 tons, with a maximum axle load of 16½ tons (on the trucks), and produced a starting tractive effort of 59,560lb. After initial service revealed that the 14-ton bunker capacity was insufficient for through runs to Goulburn, the second batch was built with an enlarged coal bunker holding 18 tons of coal, which raised the total weight to 263 tons. The earlier Garratts were altered to conform, but the addition to the back of the bunker was always visible. A number of circumstances conspired to cut delivery of the second batch to 17 complete locos and five sets of spares, so that the class ultimately totalled 42 engines, numbered 6001-6042, Beyer, Peacock builder’s numbers 7473-7497 and 7528-7544. The last to enter service was 6040, on 2 January 1957.