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.

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