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Prussian G 7[h]3[/h]
For some lines where the axle load of the standard G 7 variants was too high, the G 7[h]3[/h] was designed with an additional leading axle , what gave a 2-8-0 wheel arrangement. It still had the same compound cylinder...
General
| Property | Prussian G 7[h]3[/h] 1917 variant |
|---|---|
| Built | 1917 |
| Manufacturers | Maffei, Krauss, Esslingen |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Prussian G 7[h]3[/h] 1917 variant |
|---|---|
| Length | 17.35 m |
| Wheelbase | 6.30 m |
| Rigid wheelbase | 4.10 m |
| Service weight | 60.5 t |
| Adhesive weight | 52.5 t |
| Axle load | 13.1 t |
| Water capacity | 16,500 l |
| Fuel capacity | 7 t (coal) |
Boiler
| Property | Prussian G 7[h]3[/h] 1917 variant |
|---|---|
| Grate area | 2.31 m² |
| Firebox surface | 10.8 m² |
| Tube heating surface | 144 m² |
| Evaporative heating surface | 154.8 m² |
| Total heating surface | 154.8 m² |
Power plant
| Property | Prussian G 7[h]3[/h] 1917 variant |
|---|---|
| Driver diameter | 1,250 mm |
| Boiler pressure | 14 bar |
| Expansion type | compound |
| Cylinders | two, HP: 530 x 630 mm and LP: 750 x 630 mm |
Power
| Property | Prussian G 7[h]3[/h] 1917 variant |
|---|---|
| Power source | steam |
| Estimated power | 550 kW (748 PS) |
| Top speed | 45 km/h |
| Starting effort | 112.4 kN |
| Starting effort simple | 134.8 kN |
Calculated values
| Property | Prussian G 7[h]3[/h] 1917 variant |
|---|---|
| Factor of adhesion | 1 : 4.58 |
| Optimal speed | 31 km/h |
| Power-to-weight ratio | 9.1 kW/t |
| Heating Surface Equivalent | 208.8 m² |
| Cylinder volume/HSE | 1 : 1,332.15 |
| Adhesive weight/Total | 1 : 1.15 |
| Tractive force/Heating surface | 1 : 15.16 |
| Grate area/Heating surface | 1 : 67.01 |
| Firebox/Tube surface | 1 : 13.33 |
