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Bavarian Pt 2/4 N
DRG Class 72.1

Type and origin
Builder	Krauss
Build date	1909
Total produced	2

Specifications
Configuration:
• Whyte	4-4-0T
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	800 mm (2 ft 7+1⁄2 in)
Driver dia.	1,250 mm (4 ft 1+1⁄4 in)
Length:
• Over beams	9,065 mm (29 ft 9 in)
Axle load	13.2 t (13.0 long tons; 14.6 short tons)
Adhesive weight	26.2 t (25.8 long tons; 28.9 short tons)
Service weight	39.0 t (38.4 long tons; 43.0 short tons)
Fuel capacity	1,100 kg (2,400 lb)
Water cap.	6 m (1,300 imp gal; 1,600 US gal)
Boiler:
No. of heating tubes	155
Heating tube length	3,500 mm (11 ft 5+3⁄4 in)
Boiler pressure	12 kgf/cm (1,180 kPa; 171 lbf/in)
Heating surface:
• Firebox	1.22 m (13.1 sq ft)
• Evaporative	73.56 m (791.8 sq ft)
Cylinders	2
Cylinder size	350 mm (13+3⁄4 in)
Piston stroke	500 mm (19+11⁄16 in)

Performance figures
Maximum speed	65 km/h (40 mph)

Career
Numbers	K.Bay.Sts.E.: 6501–6502 DRG: 72 101 – 78 102
Retired	1928

The Bavarian Pt 2/4 N was a steam locomotive with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn). It was developed in parallel with the Bavarian Pt 2/3 and for the same duties. Instead of a fixed carrying axle it was given a bogie. This change brought no advantage, so the more cost-effective Pt 2/3 was favoured. The two Pt 2/4 N engines were nevertheless taken over by the Reichsbahn, but were retired by 1928.

References

Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. p. 85. ISBN 978-3-946594-21-5.
Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 56–58. ISBN 3-87094-087-5.

v t e Classes of Bavarian locomotive and railcars
Early locomotives	Adler Jupiter and Juno Vesta and Venus Vulkan and Mars Merkur and Diana A I A II A III A IV A V B I B II B III B IV B V B V (artic) C I C II	[REDACTED]
Passenger and express train locomotives	B VI B VII B VIII B IX (old) B IX B X B XI Zw B XI Vbd C V AA I S 2/5 (Vauclain) S 2/5 S 2/6 S 3/5 N S 3/5 H S 3/6 P 2/4 P 3/5 N P 3/5 H
Goods train locomotives	C II C III C IV Zw C IV Vbd C VI E I E I (Vauclain) BB I G 3/4 N G 3/4 H G 4/5 N G 4/5 H G 5/5
Tank locomotives	D I D II D II (old) D III D IV D V D IX D XII Pt 2/3 Pt 2/4 N Pt 2/4 H Pt 2/5 N Pt 2/5H Pt 3/6 Gt 2×4/4 R 3/3 R 4/4
Branch line locomotives	D VI D VII D VIII D X D XI BB II PtL 2/2 (Maffei) PtL 2/2 (Krauss) PtL 3/3 PtL 3/4 PtzL 3/4 GtL 4/4 (GtL 4/5 - DRG 98.10) (GtL 4/5 - DRG 98.11)
Narrow gauge locomotives	LE Pts 3/4 Gts 4/4 Gts 2x3/3
Electric locomotives	ES 1 EP 1 EP 2 EP 3 EP 4 EP 5 EG 1 EG 2 EG 3 (EG 4) (EG 5)
Railbuses	Krauss railmotor MCi MBCi MCCi MBCL MPL D4ieIT (D4ieIT variant - DRG ET 85)
Bavarian Ostbahn locomotives	A 1 – A 12 A 13 – A 24 A 1 – A 2 B 1 – B 66 B 67 – B 78 B 79 – B 90 B 91 – B 96 B 97 – B 109 C 1 – C 12 C 13 – C 64 D 1 – D 12 D 13 – D 14
Royal Bavarian State Railways

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References