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German Reichsbahn class 39
The last passenger locomotive that was still designed by the Prussian State Railways was to be able to pull heavy express and passenger trains on low mountain ranges without double-heading. The drawings were made as e...
General
| Property | German Reichsbahn class 39Remove |
|---|---|
| Built | 1922-1927 |
| Manufacturers | Borsig |
| Wheel arrangement | 2-8-2 (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | German Reichsbahn class 39Remove |
|---|---|
| Length | 22.89 m |
| Wheelbase | 11.60 m |
| Rigid wheelbase | 4.00 m |
| Empty weight | 100.4 t |
| Service weight | 110.4 t |
| Adhesive weight | 75.7 t |
| Axle load | 19.4 t |
| Total weight | 175.5 t |
| Water capacity | 31,500 l |
| Fuel capacity | 7 t (coal) |
Boiler
| Property | German Reichsbahn class 39Remove |
|---|---|
| Grate area | 4.07 m² |
| Firebox surface | 17.51 m² |
| Tube heating surface | 200.65 m² |
| Evaporative heating surface | 218.16 m² |
| Superheater surface | 82 m² |
| Total heating surface | 300.2 m² |
Power plant
| Property | German Reichsbahn class 39Remove |
|---|---|
| Driver diameter | 1,750 mm |
| Boiler pressure | 14 bar |
| Expansion type | simple expansion |
| Cylinders | three, 520 x 660 mm |
Power
| Property | German Reichsbahn class 39Remove |
|---|---|
| Power source | steam |
| Indicated power | 1,192 kW (1,621 PS) |
| Top speed | 110 km/h |
| Starting effort | 182.0 kN |
Calculated values
| Property | German Reichsbahn class 39Remove |
|---|---|
| Factor of adhesion | 1 : 4.08 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 10.8 kW/t |
| Heating Surface Equivalent | 469.7 m² |
| Cylinder volume/HSE | 1 : 895.22 |
| Adhesive weight/Total | 1 : 1.46 |
| Tractive force/Heating surface | 1 : 12.67 |
| Grate area/Heating surface | 1 : 73.75 |
| Firebox/Tube surface | 1 : 11.46 |
| Total/Superheater | 1 : 2.66 |
