Iranian State Railways 2-8-0 Locomotives in Iran
Class Details by Steve Llanso of Sweat House Media
Class 41.0 (Locobase 4345)
Data from 1946 Beyer, Peacock catalogue hosted on Martyn Bane's website at [
] (accessed 21 May 2006).
Batch #1525 (works# 6771-6773) was immediately followed by Batch 1526 (6774-6775), which may have been built to a different design. By the time of the catalogue, the Consolidations had passed into Iranian State Railway service. Like many Beyer, Peacock engines, these had Belpaire fireboxes.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 41.0 |
| Locobase ID | 4345 |
| Railroad | Iranian State Railways |
| Country | Iran |
| Whyte | 2-8-0 |
| Number in Class | 5 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 5 |
| Builder | |
| Year | 1934 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14.75 / 4.50 |
| Engine Wheelbase (ft / m) | 22.50 / 6.86 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.66 |
| Overall Wheelbase (engine & tender) (ft / m) | 48.33 / 14.73 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 33,040 / 14,987 |
| Weight on Drivers (lbs / kg) | 128,128 / 58,118 |
| Engine Weight (lbs / kg) | 150,080 / 68,075 |
| Tender Loaded Weight (lbs / kg) | 109,760 / 49,786 |
| Total Engine and Tender Weight (lbs / kg) | 259,840 / 117,861 |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 53 / 26.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 48 / 1219 |
| Boiler Pressure (psi / kPa) | 175 / 1210 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 20" x 26" / 508x660 |
| Tractive Effort (lbs / kg) | 32,229 / 14618.85 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.98 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 135 / 12.55 |
| Grate Area (sq ft / m2) | 34 / 3.16 |
| Evaporative Heating Surface (sq ft / m2) | 1794 / 166.73 |
| Superheating Surface (sq ft / m2) | 322 / 29.93 |
| Combined Heating Surface (sq ft / m2) | 2116 / 196.66 |
| Evaporative Heating Surface/Cylinder Volume | 189.76 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 5950 |
| Same as above plus superheater percentage | 6843 |
| Same as above but substitute firebox area for grate area | 27,169 |
| Power L1 | 7948 |
| Power MT | 547.03 |