Data from "'Mikado Type' Locomotive, Soudan [sic] Government Railways", Locomotive Magazine, Volume 27 (15 March 1921), pp. 55-57.
As was true of most SGR locomotives, this class was built to the design of Mr. C. G. Hodgson , Chief Mechanical Engineer, Atbara in the Sudan. Its outside constant-lead radial valve gear actuated 10" (254 mm) piston valves.
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 150 |
| Locobase ID | 20057 |
| Railroad | Sudan Railway |
| Country | Sudan |
| Whyte | 2-8-2 |
| Number in Class | |
| Road Numbers | |
| Gauge | 3'6" |
| Number Built | |
| Builder | North British |
| Year | 1921 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 25.75 / 7.85 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.39 |
| Overall Wheelbase (engine & tender) (ft / m) | 52.67 / 16.05 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 169,568 / 76,915 |
| Tender Loaded Weight (lbs / kg) | 122,500 / 55,565 |
| Total Engine and Tender Weight (lbs / kg) | 292,068 / 132,480 |
| Tender Water Capacity (gals / ML) | 6000 / 22.73 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 8 / 7 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 54 / 1372 |
| Boiler Pressure (psi / kPa) | 160 / 11 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 21" x 27" / 533x686 |
| Tractive Effort (lbs / kg) | 29,988 / 13602.34 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | - 2" / 51 |
| Flues (number - dia) (in / mm) | - 5" / 127 |
| Flue/Tube length (ft / m) | 15.54 / 4.74 |
| Firebox Area (sq ft / m2) | 155 / 14.40 |
| Grate Area (sq ft / m2) | 33.10 / 3.08 |
| Evaporative Heating Surface (sq ft / m2) | 1269 / 117.89 |
| Superheating Surface (sq ft / m2) | 268 / 24.90 |
| Combined Heating Surface (sq ft / m2) | 1537 / 142.79 |
| Evaporative Heating Surface/Cylinder Volume | 117.24 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5296 |
| Same as above plus superheater percentage | 6196 |
| Same as above but substitute firebox area for grate area | 29,016 |
| Power L1 | 5928 |
| Power MT | |