Uganda Railway 2-6-0 Locomotives in Uganda

Class Details by Steve Llanso of Sweat House Media

Class B (Locobase 12348)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 22, p. 93. Works numbers were 16661-16665 in April 1899; 16696-16745 in May; 16891-16895 in July; 16974-16978 in August; 17030-17040 in September.

A substantial order for any railroad at the time, this triple-dozen set of Moguls was accompanied by a list of changes that initial operation suggested to their owners. The canopy was too long by half; it was cut by 30" (762 mm). The regulator (throttle) handle needed to be modified because the original design would stay open while running.

In fact, however, the punch list was pretty short, which doesn't surprise Locobase. An American Mogul locomotive may have been about as bulletproof a design as steam builders could devise. The only American engines to operate on the UR, the Bs served as general-purpose engines and, according to one account, suffered accordingly. The last would be withdrawn in 1926.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID12348
RailroadUganda Railway
Number in Class36
Road Numbers35-70
Number Built36
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)10.50 / 3.20
Engine Wheelbase (ft / m)17 / 5.18
Ratio of driving wheelbase to overall engine wheelbase 0.62
Overall Wheelbase (engine & tender) (ft / m)34.17 / 10.42
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)63,000 / 28,576
Engine Weight (lbs / kg)72,000 / 32,659
Tender Loaded Weight (lbs / kg)36,000 / 16,329
Total Engine and Tender Weight (lbs / kg)108,000 / 48,988
Tender Water Capacity (gals / ML)1800 / 6.82
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)35 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42.50 / 1080
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)14.5" x 20" / 368x508
Tractive Effort (lbs / kg)13,456 / 6103.55
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.68
Heating Ability
Tubes (number - dia) (in / mm)171 - 1.625" / 41
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.58 / 2.92
Firebox Area (sq ft / m2)71 / 6.60
Grate Area (sq ft / m2)12.67 / 1.18
Evaporative Heating Surface (sq ft / m2)759 / 70.54
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)759 / 70.54
Evaporative Heating Surface/Cylinder Volume198.56
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2027
Same as above plus superheater percentage2027
Same as above but substitute firebox area for grate area11,360
Power L13303
Power MT346.76

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