New South Wales 2-6-2 Locomotives in Australia


Class Details by Steve Llanso of Sweat House Media

Class I-17/Z26 (Locobase 2407)

Data from John Forsythe (Archive Officer, Transport House), Steam Locomotive Data, Public Transport Commission of NSW [New South Wales], July 1974, p. 75, archived at [], last accessed 12 March 2015. (Many thanks to Brett Fitzpatrick for his 11 March 2015 email supplying the link to the CoalsToNewcastle website.) See also [] (16 May 2003) for full description.

Used for banking (i.e., as a helper engine on a steep grade) and shunting (yard switching). Dimensions very similar to earlier 2-6-0s, but this class had a saddle tank for the water, which concentrated weight on the drivers.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassI-17/Z26
Locobase ID2407
RailroadNew South Wales
CountryAustralia
Whyte2-6-2ST
Number in Class20
Road Numbers2601-2620
GaugeStd
Number Built20
BuilderDubs & Co
Year1892
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)11 / 3.35
Engine Wheelbase (ft / m)27.50 / 8.38
Ratio of driving wheelbase to overall engine wheelbase 0.40
Overall Wheelbase (engine & tender) (ft / m)27.50 / 8.38
Axle Loading (Maximum Weight per Axle) (lbs / kg)32,256 / 14,631
Weight on Drivers (lbs / kg)92,260 / 41,848
Engine Weight (lbs / kg)147,644 / 66,970
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)147,644 / 66,970
Tender Water Capacity (gals / ML)2106 / 7.98
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.48 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)51 / 25.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x660
Tractive Effort (lbs / kg)22,376 / 10149.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.12
Heating Ability
Tubes (number - dia) (in / mm)234 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.58 / 3.53
Firebox Area (sq ft / m2)100 / 9.29
Grate Area (sq ft / m2)21 / 1.95
Evaporative Heating Surface (sq ft / m2)1345 / 124.95
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1345 / 124.95
Evaporative Heating Surface/Cylinder Volume175.64
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3150
Same as above plus superheater percentage3150
Same as above but substitute firebox area for grate area15,000
Power L12891
Power MT207.25

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