Bavarian A III

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Bavarian A III
Number(s) Names and inventory nos.
Quantity 4
Manufacturer Maffei
Year(s) of manufacture 1851-1852
Retired by 1871 (converted)
Wheel arrangement 2-2-2
Axle arrangement 1A1 n2
Track gauge 1,435 mm (4 ft 8 12 in)
Length over buffers 11,290 mm
Service weight 21.8 t
Top speed 50 km/h
Driving wheel diameter 1,425 mm
Leading wheel diameter 915 mm
Trailing wheel diameter 915 mm
No. of cylinders 2
Cylinder bore 356 mm
Piston stroke 559 mm
Boiler Overpressure 6 bar
Grate area 0.98 m2
Evaporative heating area 60.81 m2
Tender 2 T 4,2/5
Water capacity 4.2/5.0 m3

The Bavarian A III 2-2-2 engines were German steam locomotives in service with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn).

Once again these engines were used to experiment with a short boiler and Meyer expansion valve gear. Because the additional increase in size of the heating area could not be improved by installing extra tubes, two of each were rebuilt to 0-4-2 and 0-6-2 locomotives. Otherwise their construction was the same as the Class A II engines.

They were equipped with 2 T 4.2 and, following the rebuild, 2 T 5 tenders.

See also[edit]