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 The last would be withdrawn in 1926.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 Middle Run Media | |
|---|---|
| Class | B |
| Locobase ID | 12348 |
| Railroad | Uganda Railway |
| Country | Uganda |
| Whyte | 2-6-0 |
| Number in Class | 36 |
| Road Numbers | 35-70 |
| Gauge | Metre |
| Number Built | 36 |
| Builder | Burnham, Williams & Co |
| Year | 1899 |
| Valve Gear | Stephenson |
| 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 / 1100 |
| 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 Volume | 198.56 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2027 |
| Same as above plus superheater percentage | 2027 |
| Same as above but substitute firebox area for grate area | 11,360 |
| Power L1 | 3303 |
| Power MT | 346.76 |