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Islamic Republic of Iran Railways class 41.11
Shortly before the opening of the Trans-Iranian Railway in 1938, Krupp was tasked to design a 2-8-0 and a 2-10-0 locomotive. They had to be fired with oil, with the option to fire coal if necessary. Since the railway ...
| Islamic Republic of Iran Railways class 41.11Remove | |
|---|---|
| Variant | Standard |
| Built | 1938 |
| Manufacturers | Krupp;Henschel;Esslingen |
| Wheel arrangement | 1D |
| Gauge | 1435 mm |
| Length | |
| Service mass | 81300 kg |
| Top speed | 60 km/h |
| Power | |
| Engine |
General
| Property | Islamic Republic of Iran Railways class 41.11 Standard Remove |
|---|---|
| Built | 1938 |
| Manufacturers | Krupp, Henschel, Esslingen |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Islamic Republic of Iran Railways class 41.11 Standard Remove |
|---|---|
| Total wheelbase | 15.64 m |
| Empty mass | 74 t |
| Service mass | 81.3 t |
| Adhesion mass | 67.5 t |
| Total mass | 133 t |
| Axle load | 17 t |
| Water capacity | 21,000 l |
| Fuel capacity | 6,700 l (oil) |
Boiler
| Property | Islamic Republic of Iran Railways class 41.11 Standard Remove |
|---|---|
| Grate area | 3.9 m² |
| Evaporative heating surface | 185 m² |
| Superheater surface | 65 m² |
| Total heating surface | 250.0 m² |
Power plant
| Property | Islamic Republic of Iran Railways class 41.11 Standard Remove |
|---|---|
| Driver diameter | 1,450 mm |
| Boiler pressure | 15 bar |
| Expansion type | simple expansion |
| Cylinders | two, 560 x 720 mm |
Power
| Property | Islamic Republic of Iran Railways class 41.11 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,150 kW |
| Top speed | 60 km/h |
| Starting effort | 198.5 kN |
Calculated values
| Property | Islamic Republic of Iran Railways class 41.11 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.34 |
| Optimal speed | 35 km/h |
| Power-to-weight ratio | 14.1 kW/t |
| Adhesive weight/Total | 1 : 1.20 |
| Tractive force/Heating surface | 1 : 16.59 |
| Grate area/Heating surface | 1 : 64.10 |
| Total/Superheater | 1 : 2.85 |
