Data from Krupp im Dienst der Dampflokomotive (Essen, Germany: 1940), p 98. Works numbers were 1795-1797 in August 1938, 1798-1803 in September, 1804-1807 in November, 1808-1811, 1816-1819 in January 1939, 1812-1815 in December
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 41.11 |
| Locobase ID | 21276 |
| Railroad | Iranian State |
| Country | Iran |
| Whyte | 2-8-0 |
| Number in Class | 24 |
| Road Numbers | 41.11-41.34 |
| Gauge | Std |
| Number Built | 24 |
| Builder | Krupp |
| Year | 1938 |
| Valve Gear | Heusinger |
| 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) | 148,812 / 67,500 |
| Engine Weight (lbs / kg) | 179,236 / 81,300 |
| Tender Loaded Weight (lbs / kg) | 113,979 / 51,700 |
| Total Engine and Tender Weight (lbs / kg) | 293,215 / 133,000 |
| Tender Water Capacity (gals / ML) | 5544 / 21 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2 / 6.70 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 62 / 31 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 57.10 / 1450 |
| Boiler Pressure (psi / kPa) | 220.40 / 1500 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 22.05" x 28.35" / 560x720 |
| Tractive Effort (lbs / kg) | 45,224 / 20513.29 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.29 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 41.98 / 3.90 |
| Evaporative Heating Surface (sq ft / m2) | 1991 / 185 |
| Superheating Surface (sq ft / m2) | 700 / 65 |
| Combined Heating Surface (sq ft / m2) | 2691 / 250 |
| Evaporative Heating Surface/Cylinder Volume | 158.90 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 9252 |
| Same as above plus superheater percentage | 11,658 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |