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Prussian T 4

type Moabit

Under the designation T 4, the Prussian State Railways grouped various different tank locomotives with two coupled axles and a carrying axle , which were primarily developed for suburban traffic. The engines were prod...

General

Property	Prussian T 4 T 4[h]1[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Built	1890-1899
Manufacturers	Henschel
Wheel arrangement	2-4-0T (Porter)
Gauge	1,435 mm (Standard gauge)

Dimensions and weights

Property	Prussian T 4 T 4[h]1[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Length	9.84 m
Service weight	43.2 t
Adhesive weight	29.1 t
Axle load	14.6 t
Water capacity	5,000 l
Fuel capacity	1.8 t (coal)

Boiler

Property	Prussian T 4 T 4[h]1[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Grate area	1.53 m²
Evaporative heating surface	89.6 m²
Total heating surface	89.6 m²

Power plant

Property	Prussian T 4 T 4[h]1[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Driver diameter	1,580 mm
Boiler pressure	12 bar
Expansion type	simple expansion
Cylinders	two, 420 x 600 mm

Power

Property	Prussian T 4 T 4[h]1[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Power source	steam
Estimated power	300 kW (408 PS)
Top speed	75 km/h
Starting effort	68.3 kN

Calculated values

Property	Prussian T 4 T 4[h]1[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Factor of adhesion	1 : 4.18
Optimal speed	27 km/h
Power-to-weight ratio	6.9 kW/t
Adhesive weight/Total	1 : 1.48
Tractive force/Heating surface	1 : 15.93
Grate area/Heating surface	1 : 58.56

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