Bavarian PtzL 3/4

Bavarian PtzL 3/4 DRG Class 97.1
Number(s)	4101–4103 + 8033 DRG 97 101–104 in Passau shed
Quantity	4
Manufacturer	Krauss
Year(s) of manufacture	29.07/ 30.08 and 17 September 1912, 1923
Retired	1963
Wheel arrangement	0-6-2
Axle arrangement	C1' h2(4v)
Type	Ptzl
Gauge	1,435mm
Length over buffers	10,490 mm
Service weight	57.8 t
Adhesive weight	46.2 t
Axle load	15.6 t
Top speed	45km/h adhesive, 12km/h cogwheel
Indicated Power	390 kW/ 530PSi adhesive, 560PSi cogwheel
Driving wheel diameter	1,006 mm
Trailing wheel diameter	800 mm
Rack system	Emil Strub
No. of cylinders	2
Cylinder bore	508 mm
Piston stroke	460 mm
Boiler Overpressure	12 bar
Grate area	1.85 m²
Superheater area	25.40 m²
Evaporative heating area	71.69 m²
Fuel	coal
Transmission	superheated steam, 2 cylinders in adhesive working, 4 cylinders in cogwheel mode
Couplers	Standard buffers with coupling hooks

The Bavarian Class PtzL 3/4 engines with the Royal Bavarian State Railways (Königlich Bayerische Staats-Eisenbahnen) were rack railway locomotives whose cogwheel drive was designed for working on tracks with a Strub rack. In 1923 they were incorporated by the Deutsche Reichsbahn as DRG Class 97.1 (Baureihe 97.1) in their numbering plan. The locomotives remained on their regular route between Erlau and Wegscheid until the closure of this rack railway in 1963. The last journey was on 5 January 1963. They were scrapped in April 1964 at Simbach am Inn.

See also

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

External links

• There is a relevant English-language forum at Railways of Germany