Bavarian B IV

Bavarian B IVs were early German steam locomotives with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn).

Bavarian B IV
Quantity10
ManufacturerHartmann, Kessler
Year(s) of manufacture1852–1853
Retired1881
Wheel arrangement2-4-0
Axle arrangement1B n2
Track gauge1,435 mm (4 ft 8 12 in)
Length over buffers13,639 mm
Service weight28.0 t
Adhesive weight20.5 t
Axle load10.3 t
Top speed70 km/h
Driving wheel diameter1,524 mm
Leading wheel diameter915 mm
No. of cylinders2
Cylinder bore406 mm
Piston stroke610 mm
Boiler Overpressure7 bar
Grate area1.30 m2
Evaporative heating area98.8–101.2 m2
Tender3 T 5
Water capacity5.0 m3

The six engines built by Kessler were trialled with a Kessler boiler. This had a pear-shaped cross section and could therefore be set lower down between the wheels. The same effect was also attempted on the machines from Hartmann by using two boilers: a lower boiler with a small diameter and a larger, upper boiler. After two boiler explosions occurred, all the engines were equipped with normal boilers. All the vehicles had a steam dome in the centre, and the overhanging outer firebox had a flat top on which there was a safety valve and a pump (Fahrpumpe) driven by the crossheads.

They had Bavarian 3 T 5 tenders.

See also

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