Bavarian C V

The Class C V (pronounced C 5) of the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn) was one of the first European express train locomotives with a 4-6-0 wheel arrangement.

Bavarian C V DRG Class 17.3
Number(s)	K.Bay.Sts.E.: 2301–2343 DRG: 17 301 – 17 322
Quantity	Prototype: 1 Production: 42
Manufacturer	Maffei
Year(s) of manufacture	Prototype: 1896 Production: 1899–1901
Retired	by 1930
Wheel arrangement	4-6-0
Axle arrangement	2′C n4v
Track gauge	1,435 mm (4 ft 8 ^1⁄2 in)
Length over buffers	18,840 mm (61 ft 9 ^3⁄4 in)
Service weight	66.2 t (65.2 long tons; 73.0 short tons)
Adhesive weight	46.2 t (45.5 long tons; 50.9 short tons)
Axle load	15.4 t (15.2 long tons; 17.0 short tons)
Top speed	90 km/h (56 mph)
Indicated Power	1,200 PS (883 kW; 1,180 hp)
Driving wheel diameter	Prototype: 1,640 mm (5 ft 4 ^5⁄8 in) Production: 1,870 mm (6 ft 1 ^5⁄8 in)
Leading wheel diameter	950 mm (3 ft 1 ^3⁄8 in)
No. of cylinders	2, compound
LP cylinder bore	610 mm (24 in)
HP cylinder bore	380 mm (14 ^15⁄16 in)
Piston stroke	640 mm (25 ^3⁄16 in)
Boiler Overpressure	14 kgf/cm^2 (199 lbf/in^2)
Grate area	2.65 m^2 (28.5 sq ft)
Evaporative heating area	153.00 m^2 (1,646.9 sq ft)
Tender	2′2′ T 21,5
Water capacity	21.5 m^3 (4,700 imp gal; 5,700 US gal)

In 1896 Maffei built a steam locomotive for the Bavarian state exhibition at their own expense. It had coupled wheels with a 1,640 mm diameter and was therefore regarded as a multi-purpose locomotive. After the exhibition the Bavarian State Railway purchased this locomotive and, after thorough testing, ordered more engines of this type, albeit in a stronger version and with a 1,870 mm coupled wheel diameter, i.e. as genuine express train locomotives. Between 1899 and 1901 Maffei supplied 42 examples.

The C V had a four-cylinder de Glehn compound engine. Its low-pressure cylinders were external, operating on the second coupled axle, and were located between the bogie and the first coupled axle. The high-pressure cylinders were internal and worked the first coupled axle. The engines still lacked a superheater. In terms of its power (160 tons at top speed), the C V could only be used for a few years in heavy express train services. As early as 1903 the locomotives were relegated to secondary duties, but even there they did not stay long.

17 machines had to be given to France after World War I. The Deutsche Reichsbahn took over the remaining 22 examples as the DRG Class 17.3 with numbers 17 301 to 17 322. They were retired by 1930.

The vehicles were equipped with Bavarian 2'2' T 21,5 tenders.

See also

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

Literature

• Obermayer, Horst J. (1970). Taschenbuch Deutsche Dampflokomotiven. Regelspur (in German) (2nd ed.). Stuttgart: Franckh'sche Verlagshandlung. p. 56. ISBN 3-440-03643-X.