Bavarian P 3/5 N

The 36 locomotives of Class P 3/5 N of the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn) were built between 1905 and 1907 by Maffei. The P 3/5 N evolved from the S 3/5 express train locomotive and had likewise a four-cylinder compound configuration. Compared with the S 3/5 the P 3/5 N had a smaller boiler but the same size cylinders. The P 3/5 N could haul a 350-ton train at 80 km/h on the level.

Bavarian P 3/5 N
DRG Class 38.0
Type and origin
BuilderMaffei
Build date1905–1907
Total produced36
Specifications
Configuration:
​
 • Whyte4-6-0
Gauge1,435 mm (4 ft 8+1⁄2 in)
Leading dia.850 mm (2 ft 9+1⁄2 in)
Driver dia.1,640 mm (5 ft 4+5⁄8 in)
Length:
​
 • Over beams18,524 mm (60 ft 9+1⁄4 in)
Axle load15.3 t (15.1 long tons; 16.9 short tons)
Adhesive weight45.2 t (44.5 long tons; 49.8 short tons)
Service weight68.8 t (67.7 long tons; 75.8 short tons)
Water cap.18.2 m3 (4,000 imp gal; 4,800 US gal)
Boiler pressure15 kgf/cm2 (1.47 MPa; 213 lbf/in2)
Heating surface:
 • Firebox		2.60 m2 (28.0 sq ft)
 • Evaporative165.50 m2 (1,781.4 sq ft)
Cylinders4, compound
Piston stroke640 mm (25+3⁄16 in)
High-pressure cylinder340 mm (13+3⁄8 in)
Low-pressure cylinder570 mm (22+7⁄16 in)
Performance figures
Maximum speed90 km/h (56 mph)
Career
Numbers
  • K.Bay.Sts.E.: 3801–3836
  • DRG 38 001 – 38 013
Retired1938

Six locomotives were destroyed in World War I; 17 more had to be handed over as reparations. The remaining 13 locomotives were taken over by the Deutsche Reichsbahn as Class 38.0.

The S 3/6 had already displaced these locomotives from the higher value passenger services.

Following positive experience with the Class P 3/5 H, the later DRG Class 38.4, in 1921, all P 3/5 N were converted from saturated to superheated steam operation between 1924 and 1925. The vehicles were nevertheless retired between 1932 and; the last locomotive in service was the 38 003.

The engines were equipped with Bavarian 2′2′ T 18,2 tenders.

See also

References
    • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 218–220. ISBN 3-87094-081-6.
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