Data from WJK Davies, in his Light Railways of the First World War (New York: Reprints of Economic Classics, 1968) , [], the Welsh Highlands Railway site and DeGolyer, Vol 57, pp. 92+. Railway information from [], last accessed 8 February 2010. Works numbers were 41897-41902 in February 1915, 44178-44182 in September, and 51569-51573 in March 1919.
Baldwin's run of hundreds of 60-cm 4-6-0Ts for the War Department Light Railways (see Locobase 4985) ended in January 1918. Bookending this long run was a pair of order for the French High Commission for its Casablanca-Ouidja railway in Morocco. After World War One, the FHC bought five more.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 101 |
| Locobase ID | 11171 |
| Railroad | French High Commission |
| Country | Morocco |
| Whyte | 4-6-0T |
| Number in Class | 16 |
| Road Numbers | 101-116 |
| Gauge | 60 cm |
| Number Built | 16 |
| Builder | Baldwin |
| Year | 1915 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.83 / 1.78 |
| Engine Wheelbase (ft / m) | 12.33 / 3.76 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | 12.33 / 3.76 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 8816 / 3999 |
| Weight on Drivers (lbs / kg) | 26,000 / 11,793 |
| Engine Weight (lbs / kg) | 35,000 / 15,876 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 476 / 1.80 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.90 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 14 / 7 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 23.50 / 597 |
| Boiler Pressure (psi / kPa) | 178 / 1230 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9" x 12" / 229x305 |
| Tractive Effort (lbs / kg) | 6258 / 2838.58 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.15 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 83 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 7.17 / 2.19 |
| Firebox Area (sq ft / m2) | 23.50 / 2.18 |
| Grate Area (sq ft / m2) | 5.60 / 0.52 |
| Evaporative Heating Surface (sq ft / m2) | 254 / 23.60 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 254 / 23.60 |
| Evaporative Heating Surface/Cylinder Volume | 287.47 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 997 |
| Same as above plus superheater percentage | 997 |
| Same as above but substitute firebox area for grate area | 4183 |
| Power L1 | 2931 |
| Power MT | 745.59 |