Data from DeGolyer, Volume 79, pp. 657+. See also "The First Baldwin Locomotives for Persia", Baldwin Magazine, Volume 10 , No 4 (), p. 49.
Simple little Moguls with few extra appurtenances, although 8" (203 mm) piston valves admitted steam to the cylinders. Road conditions consisted of 1/2% grades, gentle curves of 9.6 degrees (radii of 180 metres/591 feet), and 70 lb/yard (35 kg/metre) rail. Baldwin Magazine's report emphasized the need for speedy delivery as the customer specified a completion time of ten weeks "and the four locomotives were completed, dismantled and boxed for shipment to Bandar Shahpour well within the time limit."
Principal Dimensions by Steve Llanso of Sweat House Media | |
|---|---|
| Class | 300 |
| Locobase ID | 15473 |
| Railroad | Imperial Government of Persia |
| Country | Iran |
| Whyte | 2-6-0 |
| Number in Class | 4 |
| Road Numbers | 300-303 |
| Gauge | Std |
| Number Built | 4 |
| Builder | Baldwin |
| Year | 1931 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10 / 3.05 |
| Engine Wheelbase (ft / m) | 17.33 / 5.28 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.58 |
| Overall Wheelbase (engine & tender) (ft / m) | 45.27 / 13.80 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 71,000 / 32,205 |
| Engine Weight (lbs / kg) | 87,000 / 39,463 |
| Tender Loaded Weight (lbs / kg) | 86,000 / 39,009 |
| Total Engine and Tender Weight (lbs / kg) | 173,000 / 78,472 |
| Tender Water Capacity (gals / ML) | 4000 / 15.15 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1500 / 5678 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 39 / 19.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46 / 1168 |
| Boiler Pressure (psi / kPa) | 175 / 12.10 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 22" / 406x559 |
| Tractive Effort (lbs / kg) | 18,212 / 8260.83 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.90 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 186 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.50 / 2.90 |
| Firebox Area (sq ft / m2) | 90 / 8.36 |
| Grate Area (sq ft / m2) | 17.60 / 1.64 |
| Evaporative Heating Surface (sq ft / m2) | 1017 / 94.52 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1017 / 94.52 |
| Evaporative Heating Surface/Cylinder Volume | 198.65 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 3080 |
| Same as above plus superheater percentage | 3080 |
| Same as above but substitute firebox area for grate area | 15,750 |
| Power L1 | 3844 |
| Power MT | 358.08 |