The reference for locomotives and railcars
Tramelan-Tavannes Railway G 2/2
Switzerland | 1884 | 3 produced
No. 2 around 1910 in Tramelan
No. 2 around 1910 in Tramelan

When it opened in 1884, the meter-gauge Tramelan-Tavannes Railway procured two small tank locomotives from the SLM, which were intended to be able to cope with the line, which was then up to four percent steep. They had a 0-4-0WT wheel arrangement and used their frames as a water tank. For safety reasons, the chassis was protected on all sides with a wooden plank.

Schematic drawing with dimensions
Schematic drawing with dimensions

In 1891 a third, almost identical locomotive was purchased. These locomotives were actually a bit too small for the line, but they remained in use until electrification in 1913. Since other meter-gauge lines in Switzerland were subsequently electrified, the locomotives were rented out for the construction work. After some time in reserve they were scrapped in 1940 and 1943.

Axle config0-4-0WT (Four-coupled) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length18 ft 11 11/16 in
Wheelbase5 ft 10 7/8 in
Fixed wheelbase5 ft 10 7/8 in
Service weight27,337 lbs27,999 lbs
Adhesive weight27,337 lbs27,999 lbs
Water capacity449 us gal
Fuel capacity441 lbs (coal)
Power sourcesteam
Estimated power80 hp (60 kW)87 hp (65 kW)
Optimal speed10 mph11 mph
Top speed16 mph
Starting effort5,177 lbf
Power Plant
Driver diameter29.5 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 8 11/16 x 13 3/4 in
Grate area4.3 sq ft
Evaporative heating area282 sq ft346.6 sq ft
Total heating area282 sq ft346.6 sq ft
Calculated Values
steam locomotive
tank locomotive
narrow gauge
last changed: 12/2023

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