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Swiss Narrow Gauge Steam Locomotives[Inhalt]
Appenzell Tram HG 2/4
Switzerland | 1904 | 4 produced
No. 6 “Säntis”
No. 6 “Säntis”
Alfred Moser & al., „Der Dampfbetrieb der Schweizerischen Eisenbahnen 1847—2006”
Variant5-67-8
General
Built1904-1909
ManufacturerSLM
Axle config2-4-2RT (Columbia) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length27 ft 8 11/16 in
Service weight74,296 lbs77,603 lbs
Adhesive weight50,486 lbs52,911 lbs
Fuel capacitycoal
Power
Power sourcesteam
Indicated power345 hp (257 kW)
Optimal speed12 mph
Top speed19 mph
Power Plant
Driver diameter32.1 in
Boiler pressure203 psi
Expansion typesimple
Cylinderstwo, 14 9/16 x 15 3/4 in
Boiler
Grate area13.6 sq ft
Evaporative heating area754.5 sq ft
Total heating area754.5 sq ft
Calculated Values
steam locomotive
passenger
tram
tank locomotive
cog railway
narrow gauge
last changed: 10 2023
Bernese Oberland Railway HG 3/3 No. 1-6
Switzerland | 1890 | 6 produced
No. 2 around 1890
No. 2 around 1890
„Bilddatenbank Nostalgie der Jungfraubahnen”

During the construction of the Bernese Oberland Railway (BOB), it was planned to purchase one type of adhesion locomotive for the less steep section and one type of purely rack locomotive for the steeper section. By the time the line opened in 1890, the decision was made to purchase only one type with a combined adhesion and reck drive. The first three HG 3 were delivered in 1890 and three more in 1893. They later became HG 3/3 according to the Swiss system.

These were 0-6-0RT tank locomotives and outside frames. The rack drive was mounted on the driving axles to avoid problems with the suspension. Of the two rack gears under the locomotive, one was used for driving and one for braking. The boiler was inclined by five percent compared to the frame.

After the BOB was electrified in 1914, these locomotives were no longer needed in daily operations and five of them were sold. Three were converted from the gauge of 1,000 mm to 950 mm and sold to the Italian Mediterranea-Calabro-Lucane. Two went to the Arosa Railway, but were sold to industry after a short time. The sixth locomotive remained with the BOB as a reserve.

General
Built1890, 1893
ManufacturerSLM
Axle config0-6-0RT (Six-coupled) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length24 ft 0 1/2 in
Wheelbase8 ft 10 5/16 in
Fixed wheelbase8 ft 10 5/16 in
Service weight62,832 lbs
Adhesive weight62,832 lbs
Water capacity660 us gal
Fuel capacity1,653 lbs (coal)
Power
Power sourcesteam
Estimated power228 hp (170 kW)
Optimal speed6 mph
Top speed19 mph
Power Plant
Driver diameter35.8 in
Boiler pressure174 psi
Expansion typesimple
Cylindersfour, adhesion: 12 5/8 x 17 11/16 in
rack: 12 5/8 x 15 3/4 in
Boiler
Grate area9.9 sq ft
Evaporative heating area656.6 sq ft
Total heating area656.6 sq ft
Calculated Values
steam locomotive
passenger
tank locomotive
narrow gauge
cog railway
last changed: 04/2024
Brig-Furka-Disentis Railway HG 3/4
Switzerland | 1913 | 10 produced
No. 1 in the SLM data sheet
No. 1 in the SLM data sheet
SBB Historic

The Brig-Furka-Disentis railway ordered ten rack locomotives from SLM while under construction, the first three of which were delivered directly to the construction sites. They were based on the HG 2/3 of the Visp-Zermatt Bahn, but had a significantly higher power thanks to superheated steam. The four cylinders worked in compound operation, with the gearwheels driven by the low-pressure cylinders and always operated together with the adhesion drive. With the electrification of the railway, the locomotives were retired there in 1940. One was sold to France and four to French Indochina (Vietnam). The latter four came back to Switzerland in 1990 and two of them are now running on the Furka mountain line after being refurbished.

General
Built1913-1914
ManufacturerSLM
Axle config2-6-0RT (Mogul) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length28 ft 8 1/2 in
Wheelbase17 ft 5 5/8 in
Fixed wheelbase11 ft 1 7/8 in
Empty weight74,516 lbs
Service weight92,638 lbs
Adhesive weight79,234 lbs
Axle load26,411 lbs
Water capacity845 us gal
Fuel capacity2,271 lbs (coal)
Power
Power sourcesteam
Indicated power510 hp (380 kW)
Optimal speed10 mph
Top speed28 mph
Power Plant
Driver diameter35.8 in
Boiler pressure203 psi
Expansion typecompound
Cylindersfour, HP: 16 9/16 x 18 7/8 in
and LP: 22 1/16 x 17 11/16 in
Boiler
Grate area15.1 sq ft
Firebox area73.5 sq ft
Tube heating area643.5 sq ft
Evaporative heating area717 sq ft
Superheater area185.1 sq ft
Total heating area902.1 sq ft
Calculated Values
steam locomotive
tank locomotive
narrow gauge
cog railway
passenger
last changed: 05/2023
Jura-Bern-Luzern G 3/3
Switzerland | 1889 | 16 produced
JS-909 in April 2016 in Saint Valery Canal
JS-909 in April 2016 in Saint Valery Canal
Didier Duforest
Variantstandard variantsuperheatedMOB variant
General
Built1889-1903
ManufacturerSLM
Axle config0-6-0T (Six-coupled) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length22 ft 10 3/16 in23 ft 0 3/8 in
Wheelbase8 ft 2 7/16 in
Fixed wheelbase8 ft 2 7/16 in
Service weight41,006 lbs44,533 lbs
Adhesive weight41,006 lbs44,533 lbs
Water capacity687 us gal
Fuel capacity1,102 lbs (coal)
Power
Power sourcesteam
Estimated power148 hp (110 kW)174 hp (130 kW)148 hp (110 kW)
Optimal speed10 mph11 mph8 mph
Top speed28 mph22 mph
Starting effort9,232 lbf10,072 lbf11,132 lbf
Power Plant
Driver diameter41.3 in37.4 in
Boiler pressure160 psi174 psi
Expansion typesimple
Cylinderstwo, 12 3/16 x 18 7/8 in
Boiler
Grate area8.6 sq ft
Evaporative heating area607.1 sq ft540.3 sq ft607.1 sq ft
Superheater area109.8 sq ft
Total heating area607.1 sq ft650.1 sq ft607.1 sq ft
Calculated Values
steam locomotive
freight
passenger
tank locomotive
narrow gauge
last changed: 08 2023
Landquart-Davos Railway G 2x2/2
Switzerland | 1891 | 2 produced
No. 6 “Scaletta”
No. 6 “Scaletta”
Alfred Moser & al., „Der Dampfbetrieb der Schweizerischen Eisenbahnen 1847—2006”
General
Built1891
ManufacturerMaffei
Axle config0-4-4-0T (Four Coupled Mallet) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length33 ft 7 9/16 in
Wheelbase22 ft 3 11/16 in
Fixed wheelbase5 ft 3 in
Empty weight80,469 lbs
Service weight98,106 lbs
Adhesive weight98,106 lbs
Axle load22,322 lbs
Water capacity793 us gal
Fuel capacity2,646 lbs (coal)
Power
Power sourcesteam
Estimated power335 hp (250 kW)
Optimal speed12 mph
Starting effort17,993 lbf
with start valve21,592 lbf
Power Plant
Driver diameter41.3 in
Boiler pressure174 psi
Expansion typecompound
Cylindersfour, HP: 13 x 21 5/8 in
and LP: 19 5/16 x 21 5/8 in
Boiler
Grate area15.1 sq ft
Firebox area65.7 sq ft
Tube heating area863.3 sq ft
Evaporative heating area928.9 sq ft
Total heating area928.9 sq ft
Calculated Values
steam locomotive
freight
narrow gauge
Mallet
tank locomotive
last changed: 09 2023
Rhaetian Railway G 2/2+2/3
Switzerland | 1896 | 2 produced
No. 23 “Maloja”
No. 23 “Maloja”
Alfred Moser & al., „Der Dampfbetrieb der Schweizerischen Eisenbahnen 1847—2006”
General
Built1896
ManufacturerSLM
Axle config0-4-4-2T (Swiss (Mallet)) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length33 ft 11 3/16 in
Wheelbase21 ft 7 13/16 in
Fixed wheelbase5 ft 3 in
Empty weight80,469 lbs
Service weight98,106 lbs
Adhesive weight88,626 lbs
Axle load22,267 lbs
Water capacity898 us gal
Fuel capacity2,646 lbs (coal)
Power
Power sourcesteam
Estimated power416 hp (310 kW)
Optimal speed13 mph
Starting effort21,002 lbf
with start valve25,202 lbf
Power Plant
Driver diameter41.3 in
Boiler pressure203 psi
Expansion typecompound
Cylindersfour, HP: 13 x 21 5/8 in
and LP: 19 5/16 x 21 5/8 in
Boiler
Grate area14 sq ft
Firebox area75.3 sq ft
Tube heating area850.3 sq ft
Evaporative heating area925.7 sq ft
Total heating area925.7 sq ft
Calculated Values
steam locomotive
freight
narrow gauge
Mallet
tank locomotive
last changed: 09 2023
Rhaetian Railway G 2/3+2/2
Switzerland | 1902 | 8 produced
Die Lokomotive, July 1904

To open the new line from Filisur to Davos, the RhB needed new locomotives that had to have sufficient tractive effort on the line, which had a gradient of up to 3.5 percent. Above all, it should not only be possible to transport passenger trains, but also the mixed trains that were common on the RhB. As with the G 2/2+2/3, a Mallet was procured with four coupled axles, but the carrying axle was now at the front. A total of eight locomotives were built in 1902 and 1903 at a price of 76,800 Swiss francs each.

Like its predecessor, the G 2/3+2/2 had an outer frame. This ended at the front at the pivot point of the bogie, so that the boiler overhanged the front without a frame. The starting valve of the four-cylinder compound engine was activated automatically when the reverser was put to the extreme ends. Thus, live steam with reduced pressure was then admitted into the high-pressure cylinders in order to obtain a higher tractive force for starting. The locomotives could transport 300 tonnes at 38 km/h on the level or 90 tonnes on the 3.5 percent of the new line at 20 km/h. However, there was a limit of 18 km/h on the line.

Since the entire RhB network had been electrified by 1920, the locomotives became superfluous. Three units were sold to the Chemin de fer Yverdon-Ste-Croix (YStC) and had just been fitted with a superheater in the RhB workshops. They were used there until 1946, when this railway also electrified its network. This meant that two of these locos were sold to Spain and after several changes of operator were scrapped in 1961 and 1969. The other five were sold to Madagascar and converted to 950 mm gauge. One of them was scrapped in 1930, but the others only in 1958.

Variantas builtsuperheated
General
Built1902-1903
ManufacturerSLM
Axle config2-4-4-0T (Vivarais (Mallet)) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length34 ft 10 3/8 in
Wheelbase23 ft 3 1/2 in
Fixed wheelbase5 ft 3 in
Empty weight87,523 lbs89,948 lbs
Service weight104,279 lbs106,704 lbs
Adhesive weight94,358 lbs96,783 lbs
Axle load23,567 lbs23,700 lbs
Water capacity898 us gal
Fuel capacity2,205 lbs (coal)
Power
Power sourcesteam
Estimated power416 hp (310 kW)563 hp (420 kW)
Optimal speed13 mph18 mph
Starting effort19,683 lbf
with start valve23,620 lbf
Power Plant
Driver diameter41.3 in
Boiler pressure203 psi
Expansion typecompound
Cylindersfour, HP: 12 3/8 x 21 5/8 in
and LP: 19 5/16 x 21 5/8 in
Boiler
Grate area14 sq ft
Firebox area75.3 sq ft
Tube heating area850.3 sq ft827.7 sq ft
Evaporative heating area925.7 sq ft903.1 sq ft
Superheater area215.3 sq ft
Total heating area925.7 sq ft1,118.4 sq ft
Calculated Values
steam locomotive
passenger
freight
narrow gauge
Mallet
tank locomotive
last changed: 01/2023
Swiss Federal Railways G 3/4
Switzerland | 1905 | 8 produced
No. 202 on an SLM works photo
No. 202 on an SLM works photo
Variantas builtsuperheated
General
Built1905, 1912-1913
ManufacturerSLM
Axle config2-6-0T (Mogul) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length27 ft 11 13/16 in
Wheelbase16 ft 0 15/16 in
Fixed wheelbase9 ft 6 3/16 in
Empty weight53,572 lbs57,761 lbs
Service weight69,005 lbs72,973 lbs
Adhesive weight58,202 lbs61,509 lbs
Water capacity925 us gal
Fuel capacity1,764 lbs (coal)
Power
Power sourcesteam
Estimated power268 hp (200 kW)402 hp (300 kW)
Optimal speed14 mph20 mph
Top speed28 mph37 mph
Starting effort12,620 lbf
Power Plant
Driver diameter41.3 in
Boiler pressure174 psi
Expansion typesimple
Cylinderstwo, 13 3/8 x 19 11/16 in
Boiler
Grate area11.8 sq ft
Firebox area64.6 sq ft
Tube heating area697.5 sq ft643.7 sq ft
Evaporative heating area762.1 sq ft708.3 sq ft
Superheater area193.8 sq ft
Total heating area762.1 sq ft902 sq ft
Calculated Values
steam locomotive
tank locomotive
narrow gauge
freight
passenger
last changed: 10 2023
Swiss Locomotive and Machine Factory H 2/3
Switzerland | 1992 | 8 produced
Brienz-Rothorn-Bahn No. 12 in August 201
Brienz-Rothorn-Bahn No. 12 in August 201
NearEMPTiness
General
Built1992-1996
ManufacturerSLM
Axle config4-0-2RT (Abt) 
Gauge2 ft 7 1/2 in, 3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length20 ft 6 7/16 in
Wheelbase11 ft 11 11/16 in
Fixed wheelbase6 ft 9 1/2 in
Service weight34,613 lbs
Adhesive weight0 lbs
Water capacity370 us gal
Fuel capacity1,235 lbs (oil)
Power
Power sourcesteam
Indicated power402 hp (300 kW)
Optimal speed15 mph
Top speed7 mph
Power Plant
Driver diameter22.6 in
Boiler pressure232 psi
Expansion typesimple
Cylinderstwo, 11 x 15 3/4 in
Boiler
Calculated Values
steam locomotive
passenger
cog railway
tank locomotive
last changed: 10 2023
Tramelan-Tavannes Railway G 2/2
Switzerland | 1884 | 3 produced
No. 2 around 1910 in Tramelan
No. 2 around 1910 in Tramelan
www.le-rail-ch

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
www.le-rail.ch

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.

Variant1-23
General
Built18841891
ManufacturerSLM
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
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
Boiler
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
passenger
freight
tank locomotive
narrow gauge
last changed: 12/2023
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