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The reference for locomotives and railcars

Lokalbahn AG No. 17 to 49

German Reichsbahn class 9873-74

Germany 1890 13 produced
Schematic drawing with dimension Die Lokomotive, January 1905

Between 1890 and 1897, the LAG received 13 compound 2-6-0T tank locomotives from Krauss. They received numbers between 17 and 49. Four of these went to the LAG's subsidiary Lausitzer Eisenbahn-Gesellschaft (LEG) in today's Poland. For better guidance on secondary lines, they had a Krauss-Helmholtz bogie that combined the leading and the first driving axle. Aside from these, two simple locomotives were built which were numbered 27 and 28 and were otherwise similar. Additionally, two heavier compound locomotives were built in 1900 which were numbered 59 and 60.

In 1903, No. 18 was rebuilt with the Schmidt smoke tube superheater and tested with very good results, but remained the only one. In 1917, two of 13 locomotives were sold to the BASF. When the LAG was nationalized and integrated into the Reichsbahn in 1938, the Bavarian locomotives became class 9873, while the locomotives of the LEG became class 9874. From the eleven Reichsbahn locomotives, the ten remaining ones came to the Bundesbahn after World War II. They were retired between 1946 and 1950.

No. 18 in January 1903 Georg Lotter / Die Lokomotive, January 1905

Technical data

General

Property 17-20 23-25, 40, 41, 44, 47-49
Built 1890-1897
Manufacturers Krauss
Wheel arrangement 2-6-0T (Mogul)
Gauge 1,435 mm (Standard gauge)

Dimensions and weights

Property 17-20 23-25, 40, 41, 44, 47-49
Length 8.09 m
Wheelbase 4.80 m
Service mass 35 t
Adhesion mass 27 t
Rigid wheelbase 2.70 m
Axle load 9.1 t
Water capacity 4,000 l
Fuel capacity 1.7 t (coal)

Boiler

Property 17-20 23-25, 40, 41, 44, 47-49
Grate area 1.7 m²
Firebox surface 5.83 m²
Tube heating surface 60.37 m²
Evaporative heating surface 66.2 m²
Total heating surface 66.2 m²

Power plant

Property 17-20 23-25, 40, 41, 44, 47-49
Driver diameter 1,090 mm
Boiler pressure 12 bar 14 bar
Expansion type compound
Cylinders two, HP: 360 x 500 mm and LP: 550 x 500 mm

Power

Property 17-20 23-25, 40, 41, 44, 47-49
Power source steam
Indicated power 184 kW (250 PS)
Top speed 45 km/h
Starting effort 42.4 kN 49.5 kN
Starting effort simple 50.9 kN 59.4 kN
Estimated power 200 kW (272 PS)

Calculated values

Property 17-20 23-25, 40, 41, 44, 47-49
Factor of adhesion 1 : 6.24 1 : 5.35
Optimal speed 26 km/h 24 km/h
Power-to-weight ratio 5.3 kW/t 5.7 kW/t
Heating Surface Equivalent 95.4 m²
Cylinder volume/HSE 1 : 1,156.68
Adhesive weight/Total 1 : 1.30
Tractive force/Heating surface 1 : 13.39 1 : 15.63
Grate area/Heating surface 1 : 38.94
Firebox/Tube surface 1 : 10.36
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