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German Reichsbahn class 41
For fast freight service, the Reichsbahn chose the 2-8-2 wheel arrangement in order to be able to achieve the required power with an axle load of 18 tonnes. To increase the adhesive weight on main lines, the axle load...
General
| Property | German Reichsbahn class 41 reduced boiler pressure |
|---|---|
| Built | 1937-1941 |
| Manufacturers | BMAG, Borsig, Esslingen, Henschel, Jung, Krauss-Maffei, Krupp, O&K, Schichau |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | German Reichsbahn class 41 reduced boiler pressure |
|---|---|
| Length | 23.91 m |
| Wheelbase | 12.05 m |
| Rigid wheelbase | 5.55 m |
| Total wheelbase | 20.18 m |
| Empty weight | 92.6 t |
| Service weight | 101.9 t |
| Adhesive weight | 70 t |
| Axle load | 18.2 t |
| Total weight | 176.1 t |
| Water capacity | 34,000 l |
| Fuel capacity | 10 t (coal) |
Boiler
| Property | German Reichsbahn class 41 reduced boiler pressure |
|---|---|
| Grate area | 3.89 m² |
| Firebox surface | 15.9 m² |
| Tube heating surface | 187.25 m² |
| Evaporative heating surface | 203.15 m² |
| Superheater surface | 72.22 m² |
| Total heating surface | 275.4 m² |
Power plant
| Property | German Reichsbahn class 41 reduced boiler pressure |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 16 bar |
| Expansion type | simple expansion |
| Cylinders | two, 520 x 720 mm |
Power
| Property | German Reichsbahn class 41 reduced boiler pressure |
|---|---|
| Power source | steam |
| Indicated power | 1,397 kW (1,899 PS) |
| Top speed | 90 km/h |
| Starting effort | 165.5 kN |
Calculated values
| Property | German Reichsbahn class 41 reduced boiler pressure |
|---|---|
| Factor of adhesion | 1 : 4.15 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 13.7 kW/t |
| Heating Surface Equivalent | 427.1 m² |
| Cylinder volume/HSE | 1 : 716.04 |
| Adhesive weight/Total | 1 : 1.46 |
| Tractive force/Heating surface | 1 : 12.55 |
| Grate area/Heating surface | 1 : 70.79 |
| Firebox/Tube surface | 1 : 11.78 |
| Total/Superheater | 1 : 2.81 |
