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The reference for locomotives and railcars

Gotland No. 1 to 3

Sweden 1878 3 produced
Locomotive Magazine, March 1920

The Gotland Railway opened its 57 km long line in 1878 with a gauge of 891 millimeters (2 feet 11 inches) and ordered three small tank locomotives from NoHAB in Trollhättän. An axle load of just over five tonnes had to suffice on the narrow-gauge railway. The locomotives were given the names “Wisby”, “Polhem” and “Gotland” and were completed shortly before the opening of the line.

One of the three locomotives was presented at the Paris Exhibition in 1878 and was NoHAB's first showpiece there. According to Locomotive Magazine, apart from their Belpaire firebox, the locomotives were not distinguished by any special technical features, but by the high-quality execution of details. In addition to the successful execution of the valve gear, this also included a good weight balance thanks to the unevenly distributed wheelbases.

When the SJ took over operations on the Gotland Railway in 1948, the three locomotives were no longer used. Numbers 1 and 2 were then scrapped in 1952. Number 3 “Gotland” was donated to the Swedish Railway Museum in 1956 and has belonged to Gotlands Hesselby Jernväg since 1992.

Technical data

General

Built
1878
Manufacturers
NoHAB
Wheel arrangement
0-6-0T (Six-coupled)
Gauge
891 mm (Swedish three feet)

Dimensions and weights

Empty mass
12.6 t
Service mass
15.8 t
Adhesion mass
15.8 t
Axle load
5.3 t
Water capacity
1,650 l
Fuel capacity
0.7 t (coal)

Boiler

Grate area
0.58 m²
Firebox surface
4.15 m²
Tube heating surface
38.85 m²
Evaporative heating surface
43 m²
Total heating surface
43.0 m²

Power plant

Driver diameter
991 mm
Boiler pressure
10 bar
Expansion type
simple expansion
Cylinders
two, 279 x 406 mm

Power

Power source
steam
Estimated power
110 kW (150 PS)
Starting effort
27.1 kN

Calculated values

Factor of adhesion
1 : 5.72
Optimal speed
24 km/h
Power-to-weight ratio
7.0 kW/t
Heating Surface Equivalent
63.8 m²
Cylinder volume/HSE
1 : 778.71
Adhesive weight/Total
1 : 1.00
Tractive force/Heating surface
1 : 13.17
Grate area/Heating surface
1 : 74.14
Firebox/Tube surface
1 : 9.36
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