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Prussian T 7
The T 7 was developed in order to have a small tank locomotive for heavy shunting services and for use with freight trains on short branch lines, which is slightly more powerful than the T 3. From 1881, over 400 were ...
General
| Property | Prussian T 7 Hanomag |
|---|---|
| Built | 1881-1903 |
| Manufacturers | Borsig, Hanomag, Hohenzollern, Union Königsberg |
| Wheel arrangement | 0-6-0T (Six-coupled) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Prussian T 7 Hanomag |
|---|---|
| Length | 9.57 m |
| Wheelbase | 3.70 m |
| Rigid wheelbase | 3.70 m |
| Empty weight | 34.3 t |
| Service weight | 44.7 t |
| Adhesive weight | 44.7 t |
| Axle load | 14.9 t |
| Water capacity | 5,500 l |
| Fuel capacity | 1.5 t (coal) |
Boiler
| Property | Prussian T 7 Hanomag |
|---|---|
| Grate area | 1.4 m² |
| Firebox surface | 5.9 m² |
| Tube heating surface | 82.3 m² |
| Evaporative heating surface | 88.2 m² |
| Total heating surface | 88.2 m² |
Power plant
| Property | Prussian T 7 Hanomag |
|---|---|
| Driver diameter | 1,340 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 430 x 630 mm |
Power
| Property | Prussian T 7 Hanomag |
|---|---|
| Power source | steam |
| Estimated power | 250 kW (340 PS) |
| Top speed | 45 km/h |
| Starting effort | 88.7 kN |
Calculated values
| Property | Prussian T 7 Hanomag |
|---|---|
| Factor of adhesion | 1 : 4.95 |
| Optimal speed | 18 km/h |
| Power-to-weight ratio | 5.6 kW/t |
| Heating Surface Equivalent | 117.7 m² |
| Cylinder volume/HSE | 1 : 1,554.61 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 21.00 |
| Grate area/Heating surface | 1 : 63.00 |
| Firebox/Tube surface | 1 : 13.95 |
