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Prussian T 28
The Prussian State Railways ordered the first example of the T 28 rack locomotive before the First World War, as the T 26 units used up to that point were no longer powerful enough for modern requirements and were too...
General
| Property | Prussian T 28Remove |
|---|---|
| Built | 1920 |
| Manufacturers | Borsig |
| Wheel arrangement | 2-8-2RT (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Prussian T 28Remove |
|---|---|
| Length | 12.70 m |
| Wheelbase | 9.37 m |
| Rigid wheelbase | 3.67 m |
| Empty weight | 80.6 t |
| Service weight | 94.3 t |
| Adhesive weight | 66.4 t |
| Axle load | 16.6 t |
| Water capacity | 7,000 l |
| Fuel capacity | 3 t (coal) |
Boiler
| Property | Prussian T 28Remove |
|---|---|
| Grate area | 2.86 m² |
| Firebox surface | 10.7 m² |
| Tube heating surface | 109 m² |
| Evaporative heating surface | 119.7 m² |
| Superheater surface | 39.8 m² |
| Total heating surface | 159.5 m² |
Power plant
| Property | Prussian T 28Remove |
|---|---|
| Driver diameter | 1,100 mm |
| Boiler pressure | 14 bar |
| Expansion type | compound |
| Cylinders | four, HP: 520 x 500 mm and LP: 520 x 500 mm |
Power
| Property | Prussian T 28Remove |
|---|---|
| Power source | steam |
| Indicated power | 719 kW (978 PS) |
| Top speed | 55 km/h |
| Starting effort | 146.3 kN |
| Starting effort simple | 175.5 kN |
Calculated values
| Property | Prussian T 28Remove |
|---|---|
| Factor of adhesion | 1 : 4.45 |
| Optimal speed | 31 km/h |
| Power-to-weight ratio | 7.6 kW/t |
| Heating Surface Equivalent | 252.8 m² |
| Cylinder volume/HSE | 1 : 1,260.12 |
| Adhesive weight/Total | 1 : 1.42 |
| Tractive force/Heating surface | 1 : 19.15 |
| Grate area/Heating surface | 1 : 55.77 |
| Firebox/Tube surface | 1 : 10.19 |
| Total/Superheater | 1 : 3.01 |
