North Mount Lyell Copper Co 4-6-0 Locomotives in Australia


Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 10257)

Data from "6-coupled Narrow Gauge Locomotive for the North Mount Lyell Copper Co., Tasmania", The Locomotive Magazine,Vol VIII (17 Jan 1903), p.41. See also Wikipedia and [link], the Australian Government's history of transportation.

According to the above account, this design is a scaled-down version of David Jones's 6-coupled bogie freight engines used on the Highland Railway. Its antipodean destination was the largest copper mining company on the West Coast of Tasmania and a railway that is derided by the Australian government history as follows: "For extravagance, uselessness and lack of longevity, though, the North Mount Lyell Mining Company's railway was in a class of its own." But the Belpaire-boilered Ten-wheelers endured.

Mount Lyell (thc company, but the brooding mountain as well) dominated Queenstown, Strahan and Gormanston until its closure in 1994.

The production figures are impressive: more than a million tonnes of copper, 750 tonnes of silver and 45 tonnes of gold -- equivalent, says Wikipedia, "... to over 4 billion dollars worth of metal in 1995 terms." Also impressive was the devastation wrought on the watersheds by the tailings, about 100 million tonnes of which were dumped into the Queen River. This was remediated in 1994-1996.

Principal Dimensions by Steve Llanso of Middle Run Media
Classunknown
Locobase ID10257
RailroadNorth Mount Lyell Copper Co
CountryAustralia
Whyte4-6-0
Number in Class1
Road Numbers
Gauge3'6"
Number Built1
BuilderKitson & Co
Year1902
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)76,160 / 34,546
Tender Loaded Weight (lbs / kg)4480 / 2032
Total Engine and Tender Weight (lbs / kg)80,640 / 36,578
Tender Water Capacity (gals / ML)1500 / 5.68
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)175 / 1210
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)15,938 / 7229.36
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.51
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)90 / 8.36
Grate Area (sq ft / m2)13.50 / 1.25
Evaporative Heating Surface (sq ft / m2)931 / 86.52
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)931 / 86.52
Evaporative Heating Surface/Cylinder Volume227.59
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2363
Same as above plus superheater percentage2363
Same as above but substitute firebox area for grate area15,750
Power L14136
Power MT488.48

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