Anglo-Persian 0-6-2 Locomotives in Iran
Class Details by Steve Llanso of Sweat House Media
Class M5 Special (Locobase 8198)
Data from the Industrial Railway Record No 53, pp 203-204 (April 1974) reproduction of The Locomotive Magazine article of 14 March 1931, as archived on [
], accessed 21 February 2007.
Anglo-Persian (Anglo-Iranian Oil Co. Ltd after 1935) ran a 40-mile (70-km) railway to serve the Abadan oil field, refinery, and port areas in Iran. In 1928, Peckett delivered the first of these oil-fired radial tanks on 20 Feb 1928 (works #1750). Two-and-a-half years later, on 10 October 1930, works # 1816 followed. After Anglo-Iranian was formed in 1935, it took delivery of 1909, the third engine built to this design, ex works on 22 October 1936.
Steam sanders were rated among the most useful accessories on these engines because of the likelihood of oil being spilled on the rails.
Most other radial tanks running on this gauge were built for German or Austrian use and were somewhat larger. Yet the high firebox ratio and large boiler in comparison to the cylinder volume suggests these engines seldom ran short of steam regardless of demand.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | M5 Special |
| Locobase ID | 8198 |
| Railroad | Anglo-Persian |
| Country | Iran |
| Whyte | 0-6-2T |
| Number in Class | 3 |
| Road Numbers | |
| Gauge | 2'6" |
| Number Built | 3 |
| Builder | Peckett & Sons |
| Year | 1928 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.50 / 2.29 |
| Engine Wheelbase (ft / m) | 12.33 / 3.76 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.61 |
| Overall Wheelbase (engine & tender) (ft / m) | 12.33 / 3.76 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 51,520 / 23,369 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 51,520 / 23,369 |
| Tender Water Capacity (gals / ML) | 624 / 2.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 240 / 908 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 30.50 / 775 |
| Boiler Pressure (psi / kPa) | 180 / 1240 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10" x 15" / 254x381 |
| Tractive Effort (lbs / kg) | 7525 / 3413.29 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 98 - 1.5" / 38 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9 / 2.74 |
| Firebox Area (sq ft / m2) | 55 / 5.11 |
| Grate Area (sq ft / m2) | 10 / 0.93 |
| Evaporative Heating Surface (sq ft / m2) | 398 / 36.99 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 398 / 36.99 |
| Evaporative Heating Surface/Cylinder Volume | 291.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1800 |
| Same as above plus superheater percentage | 1800 |
| Same as above but substitute firebox area for grate area | 9900 |
| Power L1 | 4516 |
| Power MT | |