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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...

	Prussian T 4 Remove
Variant	T 4[h]2[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h]
Built	1889-1897
Manufacturers	Henschel;Schichau
Wheel arrangement	B1 t
Gauge	1435 mm
Length	9530 mm
Service mass	39800 kg
Top speed	75 km/h
Power
Engine

General

Property	Prussian T 4 T 4[h]2[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Built	1889-1897
Manufacturers	Henschel, Schichau
Wheel arrangement	0-4-2T
Gauge	1,435 mm

Dimensions and weights

Property	Prussian T 4 T 4[h]2[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Length	9.53 m
Empty mass	33.2 t
Service mass	39.8 t
Adhesion mass	26.2 t
Axle load	13.6 t
Water capacity	3,350 l
Fuel capacity	1.1 t (coal)

Boiler

Property	Prussian T 4 T 4[h]2[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Grate area	1.18 m²
Firebox surface	5.3 m²
Tube heating surface	78.7 m²
Evaporative heating surface	84 m²
Total heating surface	84.0 m²

Power plant

Property	Prussian T 4 T 4[h]2[/h] T 4 Moabit type T 4[h]1[/h] T 4[h]2[/h] T 4[h]3[/h] Remove
Driver diameter	1,544 mm
Boiler pressure	10 bar
Expansion type	simple expansion
Cylinders	two, 400 x 575 mm

Power

Property	Prussian T 4 T 4[h]2[/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	250 kW (340 PS)
Top speed	75 km/h
Starting effort	50.6 kN

Calculated values

Property	Prussian T 4 T 4[h]2[/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 : 5.07
Optimal speed	31 km/h
Power-to-weight ratio	6.3 kW/t
Heating Surface Equivalent	110.5 m²
Cylinder volume/HSE	1 : 1,307.81
Adhesive weight/Total	1 : 1.52
Tractive force/Heating surface	1 : 12.59
Grate area/Heating surface	1 : 71.19
Firebox/Tube surface	1 : 14.85

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