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

This article does not cite any sources. (December 2016)

Bavarian B IV
Type and origin Builder Hartmann (4) Kessler (6) Build date 1852–1853 Total produced 10
Specifications Configuration: ​  • Whyte 2-4-0 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 915 mm (3 ft 0 in) Driver dia. 1,524 mm (5 ft 0 in) Length: ​  • Over beams 13,639 mm (44 ft 9 in) Axle load 10.3 t (10.1 long tons; 11.4 short tons) Adhesive weight 20.5 t (20.2 long tons; 22.6 short tons) Service weight 28.0 t (27.6 long tons; 30.9 short tons) Water cap. 5.0 m3 (1,100 imp gal; 1,300 US gal) Boiler pressure 7 kgf/cm2 (686 kPa; 99.6 lbf/in2) Heating surface:  • Firebox 1.30 m2 (14.0 sq ft)  • Evaporative 98.8–101.2 m2 (1,063–1,089 sq ft) Cylinders 2 Cylinder size 406 mm (16 in) Piston stroke 610 mm (24 in)
Performance figures Maximum speed 70 km/h (43 mph)
Career Retired 1881

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

• List of Bavarian locomotives and railbuses

External links

• Railways of Germany forum

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