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The reference for locomotives and railcars

Lithuanian series Tk

Lithuania 1932 4 produced
Rakow, „Lokomotiven der inländischen Eisenbahnen 1845-1955” PD

One of the few locomotive types that the independent Lithuanian State Railways procured between the world wars was the Tk, built by Škoda. It was a four-coupled tank locomotive that had a leading axle and a bogie at the rear. The bogie ensured that the supplies could be relatively large with 4.5 m³ of coal and 12 m³ of water. With a driving wheel diameter of 1,600 mm, speeds of up to 90 km/h could be reached. Four were delivered in 1932, which were numbered 11 to 14.

Although tank locomotives with this wheel arrangement were mainly used in suburban traffic in other countries, the Tk was mainly used outside of the large cities and was even used in express service. So they hauled the express train from Berlin to Daugavpils in Latvia for at least 143 km from border to border through the rather small country. From 1939 they were replaced in this role by the Pacific Tender Locomotives of the type Gp. After the Second World War, both surviving locomotives had to be handed over to the Soviet Union. One locomotive each remained in the GDR and in Poland, both of which were no longer in regular service.

Technical data

General

Built
1932
Manufacturers
Škoda
Wheel arrangement
2-4-4T (Boston/Forney)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Length
12.81 m
Service mass
82.9 t
Adhesion mass
35.6 t
Water capacity
12,000 l
Fuel capacity
4.5 t (coal)

Boiler

Grate area
2 m²
Evaporative heating surface
105.1 m²
Superheater surface
38.5 m²
Total heating surface
143.6 m²

Power plant

Driver diameter
1,600 mm
Boiler pressure
14 bar
Expansion type
simple expansion
Cylinders
two, 500 x 630 mm

Power

Power source
steam
Estimated power
700 kW (952 PS)
Top speed
90 km/h
Starting effort
117.1 kN

Calculated values

Factor of adhesion
1 : 2.98
Optimal speed
37 km/h
Power-to-weight ratio
8.4 kW/t
Adhesive weight/Total
1 : 2.33
Tractive force/Heating surface
1 : 17.04
Grate area/Heating surface
1 : 71.80
Total/Superheater
1 : 2.73
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