Marrawah Tramway 0-6-0 Locomotives in Australia


Class Details by Steve Llanso of Sweat House Media

Class Big Ben (Locobase 14737)

Data from DeGolyer, Volume 63, pp. 191. See also A W Ford, "Marrawah Tramway", Launceston Examiner 26 August 1910, p. 3. archived at [link] . Works number was 52512 in November 1919.

The western shore of Tasmania was served by the Smithton to Marrawah Tramway, which was originally begun as a wooden tramway between Marrawah and Montague in 1906. Shifting the destination to Smithton didn't attract the investment that Managing Director Ford hoped for, especially considering the 17,000 acres (6,879 ha). of timber available for harvesting in Marrawah, a town that was the westernmost settlement on the island.

By the time the Marrawah bought the 3, the line covered 26.5 miles (42.7 km), of which 8.75 miles (14.1 km) were horse-drawn, the remaining 17.75 miles (28.6 km) by steam traction. In the previous year, the seven employees of the railway had served 400 passengers and 6,760 tons (6,109 tonnes) of freight. A saddle tanker of appropriately modest dimensions and an Improved Rushton cabbage stack, the 3 quickly became known as "Big Ben."

It was known to be too light on the front axle when running forward and a 6 September 1938 accident killed its driver when the front wheels reared up and the locomotive derailed. Restored to service with rail ballast mounted on the front of the engine, the 3 was overhauled in 1946, but used very little, and after some duty in Launceton as a shunter (switcher), it was scrapped in 1951.

After the Marrawah was taken over by the Tasmanian Government Railways

Principal Dimensions by Steve Llanso of Middle Run Media
ClassBig Ben
Locobase ID14737
RailroadMarrawah Tramway
CountryAustralia
Whyte0-6-0ST
Number in Class1
Road Numbers3
Gauge3'6"
Number Built1
BuilderBaldwin
Year1919
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)7 / 2.13
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)7 / 2.13
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)32,000 / 14,515
Engine Weight (lbs / kg)32,000 / 14,515
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)400 / 1.52
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)18 / 9
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)31 / 787
Boiler Pressure (psi / kPa)160 / 1100
High Pressure Cylinders (dia x stroke) (in / mm)9" x 16" / 229x406
Tractive Effort (lbs / kg)5686 / 2579.13
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.63
Heating Ability
Tubes (number - dia) (in / mm)48 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.61 / 2.93
Firebox Area (sq ft / m2)33 / 3.07
Grate Area (sq ft / m2) 6.85 / 0.64
Evaporative Heating Surface (sq ft / m2)243 / 22.58
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)243 / 22.58
Evaporative Heating Surface/Cylinder Volume206.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1096
Same as above plus superheater percentage1096
Same as above but substitute firebox area for grate area5280
Power L12863
Power MT591.73

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