0-4-2 Steam Locomotives in Australia

New South Wales


Class Details by Steve Llanso of Sweat House Media

Class 1 class (Locobase 2397)

John Forsythe (Archive Officer, Transport House), Steam Locomotive Data, Public Transport Commission of NSW [New South Wales], July 1974, p. 47, 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.)

Mixed-traffic engine with relatively high drivers. According to OS Nock (RWC I, pl 181), JE McConnell, then locomotive superintendent of the London & North Western, was a consultant to the Sydney Railway Company. When the Sydney ordered four engines, McConnell's Wolverton Goods 0-6-0 design, then just under construction, stood in, although only the first two axles were driven and the rearmost wheel diameter was reduced.

According to the Powerhouse museum website ([], visited 11 April 2004), the official opening came on 26 Sept 1855. In that first day, 3,554 passengers were hauled on the 14-mile , 50-minute trip.

After their delivery in 1855, the 4 engines were widely praised and showed well with their brass domes and smokeboxes. "The only trouble with them," Nock comments, "was that they were far more powerful than the Australian railway needed ...For some time afterwards, locomotives built for the New South Wales were of rather lighter design." By 1857, # 1 had been moved to freight service, in which it operated for 20 years, compiling altogether 155,667 miles (250, 468 km)


Class 5 (Locobase 15990)

John Forsythe (Archive Officer, Transport House), Steam Locomotive Data, Public Transport Commission of NSW [New South Wales], July 1974, p. 48, 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.)

The tube heating surface area as derived from tube length, count, and diameter is significantly higher than that offered in the databook table. Tubes of 1 1/2" in inside diameter could generate the given figure.


Class M 36 (Locobase 2398)

Data from John Forsythe (Archive Officer, Transport House), Steam Locomotive Data, Public Transport Commission of NSW [New South Wales], July 1974, p. 55, archived at [], last accessed 12 March 2015. (Many thanks to Brett Fitzpatrick for his 11March 2015 email supplying the link to the CoalsToNewcastle website.)

Slightly larger than the 1 class, this too was a mixed-traffic engine with relatively high drivers.All were built in Australia. Four came from Mort's Dock (the first drydock to open in Australia) and four from Eveleigh Railway Workshops, the NSWGR's main construction and maintenance facility that opened in 1878.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1 class5M 36
Locobase ID2397 15990 2398
RailroadNew South WalesNew South WalesNew South Wales
CountryAustraliaAustraliaAustralia
Whyte0-4-20-4-20-4-2
Number in Class418
Road Numbers1-4536-39, 77-78
GaugeStdStdStd
Number Built418
BuilderRobert Stephenson & CoHawthorn Leslieseveral
Year185518551870
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.50 / 2.29 9.45 / 2.887 / 2.13
Engine Wheelbase (ft / m)14.50 / 4.4215.75 / 4.8014.50 / 4.42
Ratio of driving wheelbase to overall engine wheelbase 0.52 0.60 0.48
Overall Wheelbase (engine & tender) (ft / m)32.67 / 9.9630.75 / 9.3732 / 9.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)27,468 / 12,45917,136 / 777330,800 / 13,971
Weight on Drivers (lbs / kg)49,308 / 22,36630,576 / 13,86954,880 / 24,893
Engine Weight (lbs / kg)58,374 / 26,47839,436 / 17,88866,416 / 30,126
Tender Loaded Weight (lbs / kg)45,696 / 20,72728,896 / 13,10749,952 / 22,658
Total Engine and Tender Weight (lbs / kg)104,070 / 47,20568,332 / 30,995116,368 / 52,784
Tender Water Capacity (gals / ML)2400 / 9.091080 / 4.09
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.50 / 4 1.65 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)41 / 20.5025 / 12.5046 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 167654 / 137265 / 1651
Boiler Pressure (psi / kPa)120 / 830120 / 830125 / 860
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x61014" x 22" / 356x55916" x 24" / 406x610
Tractive Effort (lbs / kg)9495 / 4306.868145 / 3694.5110,043 / 4555.43
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.19 3.75 5.46
Heating Ability
Tubes (number - dia) (in / mm)212 - 1.75" / 44136 - 1.875" / 48
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.50 / 2.9013.67 / 4.17
Firebox Area (sq ft / m2)85.30 / 7.9260 / 5.5779.84 / 7.42
Grate Area (sq ft / m2)13.80 / 1.28 9.10 / 0.8515 / 1.39
Evaporative Heating Surface (sq ft / m2)1145 / 106.37828 / 76.921138 / 105.72
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1145 / 106.37828 / 76.921138 / 105.72
Evaporative Heating Surface/Cylinder Volume205.01211.24203.76
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation165610921875
Same as above plus superheater percentage165610921875
Same as above but substitute firebox area for grate area10,23672009980
Power L1371431083727
Power MT332.11448.19299.44

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