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Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad”
In 1846, Maffei of Munich built six 4-4-0 freight locomotives for the Northern State Railway. They were characterized by inside frames, outside cylinders and valve gear, an overhanging firebox and a tall steam dome . ...
| Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad”Remove | |
|---|---|
| Variant | Standard |
| Built | 1846 |
| Manufacturers | Maffei |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | |
| Service mass | 22800 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad” Standard Remove |
|---|---|
| Built | 1846 |
| Manufacturers | Maffei |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad” Standard Remove |
|---|---|
| Wheelbase | 3.67 m |
| Empty mass | 20.8 t |
| Service mass | 22.8 t |
| Adhesion mass | 14.5 t |
| Rigid wheelbase | 1.67 m |
| Axle load | 7.3 t |
Boiler
| Property | Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad” Standard Remove |
|---|---|
| Grate area | 1.1 m² |
| Firebox surface | 7 m² |
| Tube heating surface | 90 m² |
| Evaporative heating surface | 97 m² |
| Total heating surface | 97.0 m² |
Power plant
| Property | Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad” Standard Remove |
|---|---|
| Driver diameter | 1,264 mm |
| Boiler pressure | 6.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 382 x 606 mm |
Power
| Property | Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 110 kW (150 PS) |
| Starting effort | 37.5 kN |
Calculated values
| Property | Imperial-Royal Northern State Railway “Wyschrad” to “Marienbad” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.80 |
| Optimal speed | 18 km/h |
| Power-to-weight ratio | 4.8 kW/t |
| Heating Surface Equivalent | 132.0 m² |
| Cylinder volume/HSE | 1 : 1,052.31 |
| Adhesive weight/Total | 1 : 1.57 |
| Tractive force/Heating surface | 1 : 8.07 |
| Grate area/Heating surface | 1 : 88.18 |
| Firebox/Tube surface | 1 : 12.86 |
