North Borneo Railway 2-6-2 Locomotives in North_Borneo


Class Details by Steve Llanso of Sweat House Media

Class 6-015 (Locobase 5033)

According to the website [], this railway was built beginning in 1894. Originally intended to supply the port of Weston from plantations, the builder discovered Weston's harbor was too shallow for deep-draft ships. later construction extended from Beaufort to Tenom and Melalap in one direction and to Jesselton (Kota Kinabalu) in the other.

Collapsing markets in the Great Depression of the 1930s and Japanese occupation in the 1940s inflicted severe financial and physical damage to the railway. After World War II, the private owners surrendered their ownership to the Crown.

All through this time and beyond, the railway served a wide area with engines such as this small wood-burning Prairie. Although a wheel arrangement not originally designed for mixed traffic, the design represented the best of British export practice at the very end of steam. In fact, they were the last steam locomotives built by Vulcan.

After serving the North Borneo Railway, one survivor passed to the Sabah State Railway in the 1970s and soon retired.

In 2000, the engine was restored to service for tourist operations.

Principal Dimensions by Steve Llanso of Sweat House Media

Class6-015
Locobase ID5033
RailroadNorth Borneo Railway
CountryNorth Borneo
Whyte2-6-2
Number in Class
Road Numbers
Gauge3'6"
Number Built
BuilderVulcan Foundry
Year1954
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.83 / 2.69
Engine Wheelbase (ft / m)23.33 / 7.11
Ratio of driving wheelbase to overall engine wheelbase 0.38
Overall Wheelbase (engine & tender) (ft / m)47.50 / 14.48
Axle Loading (Maximum Weight per Axle) (lbs / kg)26,096 / 11,837
Weight on Drivers (lbs / kg)75,488 / 34,241
Engine Weight (lbs / kg)112,784 / 51,158
Tender Loaded Weight (lbs / kg)79,856 / 36,222
Total Engine and Tender Weight (lbs / kg)192,640 / 87,380
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 21
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15.5" x 24" / 394x610
Tractive Effort (lbs / kg)18,379 / 8336.58
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.11
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.87 / 3.31
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)1026 / 95.35
Superheating Surface (sq ft / m2)180 / 16.73
Combined Heating Surface (sq ft / m2)1206 / 112.08
Evaporative Heating Surface/Cylinder Volume195.75
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area
Power L1
Power MT

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