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The reference for locomotives and railcars

Toggenburg Railway E 3/3

Switzerland 1870
No. 1

In 1870, the Toggenburg Railway received three 0-6-0 tank locomotives from Krauss. They were ordered by the VSB, which was the operator of the TB and were named “Hülftegg”, “Yberg” and “Churfirsten”. The water was carried between the frames and the Allan valve gear was situated on the outside. With a diameter of 1,210 mm, the drivers looked relatively large for these small locomotives.

The first, domeless boilers were later switched for a larger one that had a dome. These locomotives did not only work on the TB line, but also on the VSB network. From 1885 they were designated series V, what was changed to III in the following year. Only one year later, they were again renamed to E3. After their withdrawals in 1909 and 1912, two were used as works locomotives by the SBB until 1929 and 1931.

Technical data

General

Property as built second boiler
Built 1870
Manufacturers Krauss
Wheel arrangement 0-6-0WT (Six-coupled)
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property as built second boiler
Length 7.44 m
Service mass 24.5 t 28.1 t
Adhesion mass 24.5 t 28.1 t
Axle load 8.2 t 9.3 t

Boiler

Property as built second boiler
Grate area 0.7 m²
Evaporative heating surface 62.8 m² 70.7 m²
Total heating surface 62.8 m² 70.7 m²

Power plant

Property as built second boiler
Driver diameter 1,210 mm
Boiler pressure 10 bar 12 bar
Expansion type simple expansion
Cylinders two, 290 x 540 mm

Power

Property as built second boiler
Power source steam
Indicated power 147 kW (200 PS)
Top speed 45 km/h
Starting effort 31.9 kN 38.3 kN

Calculated values

Property as built second boiler
Factor of adhesion 1 : 7.53 1 : 7.20
Optimal speed 29 km/h 24 km/h
Power-to-weight ratio 6.0 kW/t 5.2 kW/t
Adhesive weight/Total 1 : 1.00
Tractive force/Heating surface 1 : 10.61 1 : 11.31
Grate area/Heating surface 1 : 89.71 1 : 101.00
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