Data from "An 'Allied' Relic on the Ottoman Aidin Railway", Locomotive Magazine, Volume XXI [21] (15 January 1915), pp. 7-8.
Photographed as engine #77 working for the Ottoman Aidin Railway before World War One, this little tank's history went back to the French-directed construction of the Suez Canal that opened in 1869. It was one of several delivered at the time.
The engines carried long water tanks that extended to the front buffer beam. Slide valves mounted on top of the outside cylinders were actuated by outside Stephenson link motion. A small dome with cap shaped like St Paul's Cathedral dome stood just behind the tall, slender stack. A large canopy sheltered the footplate.
At least two of the class--renumbered 76 and 77-- were put to work supporting a French company's construction of a large quay at the port of Smyrna in Asia Minor. This "big undertaking, and a credit to French engineering skill" took years to complete. Put aside for years, the two engines were bought by the Ottoman (Aidin) Railway owned by British interests as yard goats at Smyrna. They were idled once again in 1905
LM's survey of the 77's condition asserted in 1915 that it was "practically certain they are as at first designed". The report added that their longevity attested to the "workmanship of the French builders, that the engines should have stood the rough usage on the Suez Canal contract and Smyrna Quay construction, to say nothing of the work got out of them by the railway company."
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 20453 |
| Railroad | Suez Canal construction |
| Country | France |
| Whyte | 0-6-0T |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | Gouin |
| Year | 1864 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 44,092 / 20,000 |
| Engine Weight (lbs / kg) | 44,092 / 20,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 762 / 2.89 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1 / 0.90 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 24 / 12 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 47.50 / 1207 |
| Boiler Pressure (psi / kPa) | 120 / 830 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12.75" x 19.5" / 324x495 |
| Tractive Effort (lbs / kg) | 6807 / 3087.61 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.48 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 40 / 3.72 |
| Grate Area (sq ft / m2) | 6.50 / 0.60 |
| Evaporative Heating Surface (sq ft / m2) | 461 / 42.83 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 461 / 42.83 |
| Evaporative Heating Surface/Cylinder Volume | 159.98 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 780 |
| Same as above plus superheater percentage | 780 |
| Same as above but substitute firebox area for grate area | 4800 |
| Power L1 | 2179 |
| Power MT | 326.85 |