Bavarian Pt 2/4 N

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.

Bavarian Pt 2/4 N DRG Class 72.1
Number(s)	K.Bay.Sts.E.: 6501–6502 DRG: 72 101 – 78 102
Quantity	2
Manufacturer	Krauss
Year(s) of manufacture	1909
Retired	1928
Wheel arrangement	4-4-0T
Axle arrangement	2′B n2t
Track gauge	1,435 mm (4 ft 8 ^1⁄2 in)
Length over buffers	9,065 mm (29 ft 9 in)
Service weight	39.0 t (38.4 long tons; 43.0 short tons)
Adhesive weight	26.2 t (25.8 long tons; 28.9 short tons)
Axle load	13.2 t (13.0 long tons; 14.6 short tons)
Top speed	65 km/h (40 mph)
Driving wheel diameter	1,250 mm (4 ft 1 ^1⁄4 in)
Leading wheel diameter	800 mm (2 ft 7 ^1⁄2 in)
No. of cylinders	2
Cylinder bore	350 mm (13 ^3⁄4 in)
Piston stroke	500 mm (19 ^11⁄16 in)
Boiler Overpressure	12 kgf/cm^2 (1,180 kPa; 171 lbf/in^2)
No. of heating tubes	155
Heating tube length	3,500 mm (11 ft 5 ^3⁄4 in)
Grate area	1.22 m^2 (13.1 sq ft)
Evaporative heating area	73.56 m^2 (791.8 sq ft)
Water capacity	6 m^3 (1,300 imp gal; 1,600 US gal)
Fuel	1,100 kg (2,400 lb)

See also

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