Bavarian B V (articulated)

The articulated variant of the Bavarian B V was an unusual, 0-6-6, steam locomotive in the Royal Bavarian State Railways (Königlich Bayerische Staats-Eisenbahnen).

Bavarian B V (articulated)
Number(s)	PHÖNIX
Quantity	1
Manufacturer	Joseph Anton von Maffei
Year(s) of manufacture	1857
Wheel arrangement	0-6-6
Axle arrangement	B3' n2
Track gauge	1,435 mm (4 ft 8 ^1⁄2 in)
Length over buffers	3,809 mm
Wheelbase	2,667 mm
Overall wheelbase	8,534 mm
Empty weight	ca. 18 t
Service weight incl. tender	ca. 45 t
Adhesive weight	ca. 21 t
Top speed	70 km/h
No. of cylinders	2
Cylinder bore	306 mm
Piston stroke	610 mm
Boiler Overpressure	7 atm
Grate area	1,25 m^2
Evaporative heating area	ca. 90 m^2
Water capacity	5.66 cubic metres
Fuel	Wood, 5 cubic metres

The articulated B V was a four-coupled locomotive built by Maffei at their own expense. It was based on the Class B V but, instead of having a third coupled axle, the back of the engine was supported by the front of the tender, called in German a Stütztender or "supporting tender". This was similar to the earlier Engerth design which articulated the tender with the main locomotive frame, allowing some of the weight of the fuel and water to be carried on the driving wheels to improve adhesion. Because the tender was articulated, rather than directly attached to the frame, the locomotive could traverse relatively sharp curves, while still enjoying the advantage of the additional adhesive weight gain. The articulated B V was not a success; it's riding qualities were poor and only one example was produced.

See also

• Royal Bavarian State Railways
• List of Bavarian locomotives and railbuses

Sources

• v. Welser, Ludwig (1994). Bayern-Report, Band Nr. 4, Eisenbahn Journal Archiv. Fürstenfeldbruck: Merker. ISBN 3-922404-69-3.