Bavarian PtzL 3/4
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.
| Bavarian PtzL 3/4 DRG Class 97.1 | |
|---|---|
| Number(s) |
|
| Quantity | 4 |
| Manufacturer | Krauss (s/n 6632–6634, 8033) |
| Year(s) of manufacture | July/August/September 1912, 1923 |
| Retired | 1954 (1), May 1963 (3) |
| Wheel arrangement | 0-6-2RT |
| Axle arrangement | C1′ h2(4v)t |
| Type | Ptzl |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers | 10,490 mm (34 ft 5 in) |
| Service weight | 57.8 t (56.9 long tons; 63.7 short tons) |
| Adhesive weight | 46.2 t (45.5 long tons; 50.9 short tons) |
| Axle load | 15.6 tonnes (15.4 long tons; 17.2 short tons) |
| Top speed |
|
| Indicated Power |
|
| Driving wheel diameter | 1,006 mm (3 ft 3 5⁄8 in) |
| Trailing wheel diameter | 800 mm (2 ft 7 1⁄2 in) |
| Rack system | Emil Strub |
| No. of cylinders |
|
| Cylinder bore | 508 mm (20 in) |
| Piston stroke | 460 mm (18 1⁄8 in) |
| Cogwheel drive cylinder bore | ? |
| Cogwheel drive piston stroke | ? |
| Boiler Overpressure | 12 kgf/cm2 (1,180 kPa; 171 lbf/in2) |
| Heating tube length | 3,800 mm (12 ft 5 1⁄2 in) |
| Grate area | 1.85 m2 (19.9 sq ft) |
| Superheater area | 25.40 m2 (273.4 sq ft) |
| Evaporative heating area | 71.69 m2 (771.7 sq ft) |
| Water capacity | 4 m3 (880 imp gal; 1,100 US gal) |
| Fuel | Coal |
| Transmission | superheated steam, 2 cylinders in adhesive working, 4 compound cylinders in rack working |
| Couplers | Standard buffers with coupling hooks |
See also
| Early locomotives |  | |
|---|---|---|
| Passenger and express train locomotives | ||
| Goods train locomotives | ||
| Tank locomotives | ||
| Branch line locomotives | ||
| Narrow gauge locomotives | ||
| Electric locomotives | ||
| Railbuses |
| |
| Bavarian Ostbahn locomotives | ||
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