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Saxon VII T (Hartmann type)
The Saxon class VII T included various two-axle local railway tank locomotives , most of which still came from the private railways. Later, the state railway ordered another 42 locomotives that were similar to the exi...
| Saxon VII T (Hartmann type)Remove | |
|---|---|
| Variant | heavy variant |
| Built | 1882-1894 |
| Manufacturers | Hartmann |
| Wheel arrangement | B t |
| Gauge | 1435 mm |
| Length | 7878 mm |
| Service mass | 26700 kg |
| Top speed | 40 km/h |
| Power | |
| Engine |
General
| Property | Saxon VII T (Hartmann type)heavy variant |
|---|---|
| Built | 1882-1894 |
| Manufacturers | Hartmann |
| Wheel arrangement | 0-4-0T (Four-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Saxon VII T (Hartmann type)heavy variant |
|---|---|
| Length | 7.88 m |
| Empty mass | 20.7 t |
| Service mass | 26.7 t |
| Adhesion mass | 26.7 t |
| Axle load | 13.4 t |
| Water capacity | 2,900 l |
| Fuel capacity | 0.9 t (coal) |
Boiler
| Property | Saxon VII T (Hartmann type)heavy variant |
|---|---|
| Grate area | 0.9 m² |
| Firebox surface | 4.5 m² |
| Tube heating surface | 39 m² |
| Evaporative heating surface | 43.5 m² |
| Total heating surface | 43.5 m² |
Power plant
| Property | Saxon VII T (Hartmann type)heavy variant |
|---|---|
| Driver diameter | 1,100 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 355 x 530 mm |
Power
| Property | Saxon VII T (Hartmann type)heavy variant |
|---|---|
| Power source | steam |
| Estimated power | 130 kW (177 PS) |
| Top speed | 40 km/h |
| Starting effort | 61.9 kN |
Calculated values
| Property | Saxon VII T (Hartmann type)heavy variant |
|---|---|
| Factor of adhesion | 1 : 4.23 |
| Optimal speed | 13 km/h |
| Power-to-weight ratio | 4.9 kW/t |
| Heating Surface Equivalent | 66.0 m² |
| Cylinder volume/HSE | 1 : 1,589.68 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 29.74 |
| Grate area/Heating surface | 1 : 48.33 |
| Firebox/Tube surface | 1 : 8.67 |
