Hoffman Steam Brick Co / SAR 0-4-0 Locomotives in Australia

Class Details by Steve Llanso of Sweat House Media

Class I ("Durty Gert") (Locobase 5885)

Data from Douglas Colquhoun's entries presented in the Australian national railway museum site: [] (visited 14 October 2003).

Works number was 2980 for this compact, but relatively large and certainly broad-gauge saddle-tanker. Colquhoun says there's no information on the locomotive's work history until Waring & Rawdon is shown as owning it in 1903. After working on Sydney's Outer Harbor construction in 1908, it was taken into the SAR in 1910. After another 19 years of service (41 all told), Durty Gert was retired on 8 April 1929 and scrapped a year later (10 May 1930).

Principal Dimensions by Steve Llanso of Sweat House Media

ClassI ("Durty Gert")
Locobase ID5885
RailroadHoffman Steam Brick Co / SAR
Number in Class1
Road Numbers161
Number Built1
BuilderBeyer, Peacock
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)
Axle Loading (Maximum Weight per Axle) (lbs / kg)25,312 / 11,481
Weight on Drivers (lbs / kg)47,824 / 21,693
Engine Weight (lbs / kg)47,824 / 21,693
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)47,824 / 21,693
Tender Water Capacity (gals / ML)600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.60 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)147.90 / 10.20
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x457
Tractive Effort (lbs / kg)9051 / 4105.47
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.28
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)38 / 3.53
Grate Area (sq ft / m2) 7.50 / 0.70
Evaporative Heating Surface (sq ft / m2)588 / 54.65
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)588 / 54.65
Evaporative Heating Surface/Cylinder Volume249.55
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1109
Same as above plus superheater percentage1109
Same as above but substitute firebox area for grate area5620
Power L12930
Power MT270.14

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