From Wikipedia, the free encyclopedia
Bavarian PtzL 3/4 DRG Class 97.1 Type and origin Builder Krauss (s/n 6632–6634, 8033)Build date July/August/September 1912, 1923 Total produced 4
Specifications Configuration: • Whyte 0-6-2RT • UIC C1′ h2(4v)t • German Z 34.15 Gauge 1,435 mm (4 ft 8+ 1 ⁄2 in )Driver dia. 1,006 mm (3 ft 3+ 5 ⁄8 in)Trailing dia. 800 mm (2 ft 7+ 1 ⁄2 in)Rack system Emil Strub Length: • Over beams 10,490 mm (34 ft 5 in) Axle load 15.6 tonnes (15.4 long tons; 17.2 short tons) Adhesive weight 46.2 t (45.5 long tons; 50.9 short tons) Service weight 57.8 t (56.9 long tons; 63.7 short tons) Fuel capacity Coal Water cap. 4 m3 (880 imp gal; 1,100 US gal) Boiler: Heating tube length 3,800 mm (12 ft 5+ 1 ⁄2 in)Boiler pressure 12 kgf/cm2 (1,180 kPa; 171 lbf/in2 ) Heating surface: • Firebox 1.85 m2 (19.9 sq ft) • Evaporative 71.69 m2 (771.7 sq ft) Superheater: • Heating area 25.40 m2 (273.4 sq ft) Cylinders Cylinder size 508 mm (20 in) Piston stroke 460 mm (18+ 1 ⁄8 in)Cogwheel drive cylinder bore 508 mm (20 in) Cogwheel drive piston stroke 460 mm (18+ 1 ⁄8 in)Transmission superheated steam, 2 cylinders in adhesive working, 4 compound cylinders in rack workingCouplers Standard buffers with coupling hooks
Performance figures Maximum speed Adhesive: 45 km/h (28 mph)Rack, 4101–03: 12 km/h (7.5 mph)Rack, 4104: 18 km/h (11 mph)Indicated power Adhesive: 530 PS (390 kW; 523 hp)Rack: 560 PS (412 kW; 552 hp)
Career Numbers K.Bay.Sts.E: 4101–4104 DRG: 97 101 – 97 104 in Passau shed Retired 1954 (1), May 1963 (3)
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 [ edit ]
References [ edit ]
Weisbrod, Manfred; Petznik, Wolfgang (1981). Dampflokomotiven deutscher Eisenbahnen, Baureihe 97–99 (EFA 1.4) (in German) (2nd ed.). Düsseldorf: Alba. pp. 16–19, 188. ISBN 3-87094-087-5 .