Data from "New Engines for the Uganda Railway", Locomotive Magazine, Volume XX [20] (15 July 1914), p. 189-190..
Although the LM report doesn't specifically say, this quintet design is the 2-6-2T described in Locobase 20308, but with an enlarged bunker and water capacity for short-haul freight away from the yard.
A photo shows the low boiler with Belpaire firebox and water tanks on the running boards that spanned all three driving axles. At the back of these engines and supported by a four-wheel bogie was another 400 Imperial gallon (480 US gallons) tank under a larger coal bunker.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 20309 |
| Railroad | Kenya-Uganda Railway |
| Country | Kenya |
| Whyte | 2-6-4T |
| Number in Class | 5 |
| Road Numbers | |
| Gauge | Metre |
| Number Built | 5 |
| Builder | Nasmyth Wilson |
| Year | 1914 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 28.71 / 8.75 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.35 |
| Overall Wheelbase (engine & tender) (ft / m) | 28.71 / 8.75 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 20,160 / 9144 |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 117,264 / 53,190 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 117,264 / 53,190 |
| Tender Water Capacity (gals / ML) | 1440 / 5.45 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | / 5 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 43 / 1092 |
| Boiler Pressure (psi / kPa) | 160 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15" x 22" / 381x559 |
| Tractive Effort (lbs / kg) | 15,656 / 7101.45 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 211 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.25 / 2.82 |
| Firebox Area (sq ft / m2) | 130 / 12.08 |
| Grate Area (sq ft / m2) | 12.80 / 1.19 |
| Evaporative Heating Surface (sq ft / m2) | 1024 / 95.13 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1024 / 95.13 |
| Evaporative Heating Surface/Cylinder Volume | 227.57 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2048 |
| Same as above plus superheater percentage | 2048 |
| Same as above but substitute firebox area for grate area | 20,800 |
| Power L1 | 4266 |
| Power MT | |