Ottomans d'Anatolie 2-6-0 Locomotives in Turkey
Class Details by Steve Llanso of Sweat House Media
Class unknown (Locobase 20703)
Data from A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966). Additional data from [
] (25 December 2003, updated with [], last accessed 26 December 2021).
These engines were built in two batches. Hanomag and Henschel delivered 201-211 to the Chemin de Fer de Ottoman Anatolien (CFOA) and 611-622 to the Baghdad Railway. (623-626, 631-633 followed in 1914).
To reduce the axle loading to a more acceptable 13,500 kg (29,762 lb), machinists on the CFOA inserted on some of the locomotives a small carrying axle between the second and third set of drivers, which were widely spaced. These then could be described as 2-6-(2)-0, wrote Durrant. (Given where it was, perhaps 2-4-(2)-2-0 might better represent the odd placement.) At the very least, 1-2, 4, 6-7, 9, and 11used the carrying axle.
In any event, those modified carried the axle to the end of steam. This class was later redesignated 34.001-018 and 34.046-048.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 20703 |
| Railroad | Ottomans d'Anatolie |
| Country | Turkey |
| Whyte | 2-6-0 |
| Number in Class | |
| Road Numbers | 201-211, |
| Gauge | Std |
| Number Built | |
| Builder | several |
| Year | 1911 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.12 / 4 |
| Engine Wheelbase (ft / m) | 20.77 / 6.33 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.63 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 34,172 / 15,500 |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 104,940 / 47,600 |
| Tender Loaded Weight (lbs / kg) | 91,051 / 41,300 |
| Total Engine and Tender Weight (lbs / kg) | 195,991 / 88,900 |
| Tender Water Capacity (gals / ML) | 4279 / 16.21 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 6.20 / 6 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52.40 / 1330 |
| Boiler Pressure (psi / kPa) | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.93" x 24.8" / 430x630 |
| Tractive Effort (lbs / kg) | 16,719 / 7583.62 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 107.64 / 10 |
| Grate Area (sq ft / m2) | 23.03 / 2.14 |
| Evaporative Heating Surface (sq ft / m2) | 1435 / 133.29 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1435 / 133.29 |
| Evaporative Heating Surface/Cylinder Volume | 222.08 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3339 |
| Same as above plus superheater percentage | 3339 |
| Same as above but substitute firebox area for grate area | 15,608 |
| Power L1 | 3867 |
| Power MT | |