The reference for locomotives and railcars
Pilatus Railway Bhm 1/2
Switzerland | 1886 | 11 produced
Builder's photo around 1890
Builder's photo around 1890

When the Pilatus railway was opened in 1887, it was the steepest rack railway in the world with 48 percent and it still holds this title today. For this the SLM had built nine steam rack railcars with inclined cab and passenger compartments to match the grade of the track. The boiler was mounted laterally on the valley side.

In 1900 and 1909, numbers 10 and 11 were built. 11 had a top speed of 4.4 instead of 3.6 km/h. Later all were superheated and got a revised suspension. Their service ended in 1937 when the Pilatus railway was electrified. No. 9 was used as a catenary-independent service vehicle until 1982. Today it is on display in Lucerne, while 10 can be found in Munich.

Built1886-1889, 1900, 1909
Axle config2-0-2RT 
Gauge2 ft 7 1/2 in
Dimensions and Weights
Length33 ft 9 1/2 in
Wheelbase20 ft 0 15/16 in
Fixed wheelbase20 ft 0 15/16 in
Empty weight20,944 lbs
Service weight29,101 lbs
Adhesive weight0 lbs
Water capacity232 us gal
Fuel capacity1,102 lbs (coal)
Power sourcesteam
Estimated power67 hp (50 kW)
Optimal speed5 mph
Top speed2 mph
Starting effort8,138 lbf
Power Plant
Driver diameter16.1 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 8 11/16 x 11 13/16 in
Grate area4.3 sq ft
Firebox area25.8 sq ft
Tube heating area200.2 sq ft
Evaporative heating area226 sq ft
Total heating area226 sq ft
Calculated Values
steam railcar
cog railway
secondary line
narrow gauge
last changed: 06/2024

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