Bavarian A II

Bavarian A II
Number(s)	Names and inventory nos.
Quantity	13
Manufacturer	Kessler, Maffei
Year(s) of manufacture	1847ff.
Retired	by 1877 (some were converted)
Wheel arrangement	2-2-2
Axle arrangement	1A1 n2
Gauge	1,435 mm (4 ft 8 ¹⁄₂ in)
Length over buffers	12,496 mm (492.0 in)
Service weight	21.8 t (21.5 long tons; 24.0 short tons)
Adhesive weight	7.6 t (7.5 long tons; 8.4 short tons)
Axle load	7.6 t (7.5 long tons; 8.4 short tons)
Top speed	45 km/h (28 mph)
Driving wheel diameter	1,524 mm (60.0 in)
Leading wheel diameter	915 mm (36.0 in)
Trailing wheel diameter	915 mm (36.0 in)
No. of cylinders	2
Cylinder bore	318 mm (12.5 in)
Piston stroke	559 mm (22.0 in)
Boiler Overpressure	6 bar (600 kPa)
Grate area	0.83 m² (8.9 sq ft)
Evaporative heating area	71.00 m² (764.2 sq ft)
Tender	2 T 4,2
Water capacity	4.2 m³ (150 cu ft)

The Bavarian A II engines were early German 2-2-2 steam locomotives with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn).

The locomotives were conceived as Stephenson Long Boiler engines. They had an inside forked frame and the firebox was supported by the trailing axle. The only difference between the engines from the two manufacturers was the location of the feed pump. On the Kessler variant this was on the outside and driven by crank pins; on the Maffei version they were suspended from the reverse eccentric cam (Rückwärtsexzenter).

After it was discovered that the riding qualities of the loco were very rough, the trailing axle was moved about 127 mm (5.0 in) further back. In the 1860s the old boiler on some vehicles was replaced by a Crampton boiler. In addition, six engines were rebuilt with a wheel arrangement of 0-6-0 and three into 0-4-2 locomotives. The remainder were taken out of service between 1871 and 1877 and scrapped.

They were coupled with 2 T 4.2 tenders.

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

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 2x4/4 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 C 13 – C 14

Royal Bavarian State Railways

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Bavarian A II

See also