Dunedin City and Suburban Tramways 0-4-0 Locomotives in New_Zealand

Class Details by Steve Llanso of Sweat House Media

Class Atlantic/Gordon (Locobase 13469)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 9, p. 58. Baldwin works number was 4522 in January 1879.

This steam dummy operated on Dunedin (New Zealand) streets for only about two years. See the long quote in the entry for the (USA) Broadway Railroad's steam dummies at Locobase 13468 for an account of the problems of running steam power on a street railway.

NB: Boiler pressure is an estimate.

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID13469
RailroadDunedin City and Suburban Tramways
CountryNew Zealand
Number in Class1
Road Numbers
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 6.50 / 1.98
Engine Wheelbase (ft / m) 6.50 / 1.98
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 6.50 / 1.98
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)150 / 0.57
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)31 / 787
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)9" x 10" / 229x254
Tractive Effort (lbs / kg)2887 / 1309.52
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)86 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 3.67 / 1.12
Firebox Area (sq ft / m2)13 / 1.21
Grate Area (sq ft / m2) 4.40 / 0.41
Evaporative Heating Surface (sq ft / m2)137 / 12.73
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)137 / 12.73
Evaporative Heating Surface/Cylinder Volume186.06
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation572
Same as above plus superheater percentage572
Same as above but substitute firebox area for grate area1690
Power L11843
Power MT

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