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Saxon H IV b T, later IIb T
Starting in 1856, Hartmann started to build four 2-4-0T tank locomotives for the Obererzgebirgische Staatsbahn for use in coal traffic. In the years up to 1874, two other companies in the Zwickau coal district followe...
General
| Property | Saxon H IV b T, later IIb T 1874 variant |
|---|---|
| Built | 1874 |
| Manufacturers | Hartmann |
| Wheel arrangement | 2-4-0T (Porter) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Saxon H IV b T, later IIb T 1874 variant |
|---|---|
| Wheelbase | 3.58 m |
| Rigid wheelbase | 1.55 m |
| Empty weight | 30 t |
| Service weight | 37.4 t |
| Adhesive weight | 29.4 t |
| Axle load | 14.7 t |
| Water capacity | 3,200 l |
| Fuel capacity | 1.3 t (coal) |
Boiler
| Property | Saxon H IV b T, later IIb T 1874 variant |
|---|---|
| Grate area | 1.1 m² |
| Firebox surface | 5.9 m² |
| Tube heating surface | 72.5 m² |
| Evaporative heating surface | 78.4 m² |
| Total heating surface | 78.4 m² |
Power plant
| Property | Saxon H IV b T, later IIb T 1874 variant |
|---|---|
| Driver diameter | 1,390 mm |
| Boiler pressure | 8.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 381 x 560 mm |
Power
| Property | Saxon H IV b T, later IIb T 1874 variant |
|---|---|
| Power source | steam |
| Estimated power | 130 kW (177 PS) |
| Top speed | 50 km/h |
| Starting effort | 42.3 kN |
Calculated values
| Property | Saxon H IV b T, later IIb T 1874 variant |
|---|---|
| Factor of adhesion | 1 : 6.83 |
| Optimal speed | 19 km/h |
| Power-to-weight ratio | 3.5 kW/t |
| Heating Surface Equivalent | 107.9 m² |
| Cylinder volume/HSE | 1 : 1,183.41 |
| Adhesive weight/Total | 1 : 1.27 |
| Tractive force/Heating surface | 1 : 11.26 |
| Grate area/Heating surface | 1 : 71.27 |
| Firebox/Tube surface | 1 : 12.29 |
