Bavarian B V (articulated)

Summary

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)
Type and origin
BuilderMaffei
Build date1857
Total produced1
Specifications
Configuration:
 • Whyte0-4-6T
 • UICB3′ n2
Gauge1,435 mm (4 ft 8+12 in)
Wheelbase:
 • Overall8,534 mm (28 ft 0 in)
Length:
 • Over beams3,809 mm (12 ft 6 in)
Adhesive weightca. 21 t (21 long tons; 23 short tons)
Empty weightca. 18 t (18 long tons; 20 short tons)
Total weightca. 45 t (44 long tons; 50 short tons)
Fuel capacityWood, 5 m3 (180 cu ft)
Water cap.5.66 m3 (1,250 imp gal; 1,500 US gal)
Boiler pressure7 kgf/cm2 (686 kPa; 99.6 lbf/in2)
Heating surface:
 • Firebox1.25 m2 (13.5 sq ft)
 • Evaporativeca. 90 m2 (970 sq ft)
Cylinders2
Cylinder size306 mm (12+116 in)
Piston stroke610 mm (24 in)
Performance figures
Maximum speed70 km/h (43 mph)
Career
NumbersPHÖNIX

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; its riding qualities were poor and only one example was produced.

See also edit

Sources edit

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