Palatine P 3.I

(Redirected from Palatine P 3)

The German steam locomotives of Palatine Class P 3I were operated by the Palatinate Railway and were the first engines in Germany with a 4-4-2 (Atlantic) wheel arrangement. The two-cylinder saturated steam locomotives with inside cylinders had in addition to an inside bar frame a characteristic outer frame for the rear part of the locomotive, that partly covered the driving wheels. The valve gear was of the Joy type.

Palatine P 3I
DRG Class 14.1
P 3I No. 119 von Neuffer (Krauss 5201 of 1904)
Type and origin
Power typeSteam
BuilderLokomotivfabrik Krauss & Comp.
Serial number3755–3760, 4076, 4238–4239, 4355–4356, 5201
Build date1898–1904[1]
Total produced12
Rebuild date1913
Specifications
Configuration:
 • Whyte4-4-2
 • UIC2′B1′ n2, later 2′B1′ n4v
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.950 mm (3 ft 1+12 in)
Driver dia.1,980 mm (6 ft 6 in)
Trailing dia.950 mm (3 ft 1+12 in)
Wheelbase
  • new: 14,800 mm (48 ft 6+34 in)
  • rebuilt: 15,125 mm (49 ft 7+12 in)
 • Engine
  • new: 8,700 mm (28 ft 6+12 in)
  • rebuilt: 9,025 mm (29 ft 7+14 in)
Length:
 • Over buffers19,070 mm (62 ft 6+34 in)
Axle load15.0 t (14.8 long tons; 16.5 short tons)
Adhesive weight30.0 t (29.5 long tons; 33.1 short tons)
Service weight59.6 t (58.7 long tons; 65.7 short tons)
Tender type3 T 16
Fuel typeCoal
Fuel capacity6 tonnes (5.9 long tons; 6.6 short tons)
Water cap.16.0 m3 (3,500 imp gal; 4,200 US gal)
Firebox:
 • Grate area2.81 m2 (30.2 sq ft)
Boiler:
 • Tube plates4,650 mm (15 ft 3 in)
Boiler pressure13 bar (13.3 kgf/cm2; 189 lbf/in2)
Heating surface:
 • Firebox10.93 m2 (117.6 sq ft)
 • Tubes
  • new: 160.80 m2 (1,730.8 sq ft)
  • rebuilt: 157.69 m2 (1,697.4 sq ft)
 • Total surface
  • new: 171.73 m2 (1,848.5 sq ft)
  • rebuilt: 168.62 m2 (1,815.0 sq ft)
CylindersTwo inside, later four compound
Cylinder sizenew: 490 mm × 570 mm (19+516 in × 22+716 in)
High-pressure cylinderrebuilt: 360 mm × 570 mm (14+316 in × 22+716 in)
Low-pressure cylinderrebuilt: 580 mm × 630 mm (22+1316 in × 24+1316 in)
Performance figures
Maximum speed100 km/h (62 mph)
Career
Numbers
  • Pfalz: 221–226, 93, 227–230, 119
  • DRG: 14 101–105
Retired1926

In 1898 and 1899 Krauss initially built eleven locomotives; in 1904 a twelfth followed that was equipped with a Pielock superheater. Although the P 3I locomotivess met their intended performance criteria, they were soon overtaxed by increasingly long trains.

The Palatinate Railway decided therefore on an unusual conversion: in 1913 the two-cylinder engine was converted into a four-cylinder compound engine by the addition of two outside cylinders, the inner ones becoming the high-pressure cylinders. However they did not achieve the higher performance required, just a lower fuel consumption of around 15%.

The Deutsche Reichsbahn took over five of these locomotives as DRG Class 14.1 with numbers 14 101 to 14 105, but by 1926 they were retired from service. Also grouped into Class 14.1 were the Bavarian S 2/5s.

The locomotives were equipped with tenders of the Bavarian Class 3 T 16.

See also

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References

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  1. ^ Mühl (1982), p. 176.

Literature

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  • Mühl, Albert (1982). Die Pfalzbahn: Geschichte, Betrieb und Fahrzeuge der pfälzischen Eisenbahnen. Theiss. 252 pp.
  • Schnabel, Heinz (1987). Eisenbahn-Fahrzeug-Archiv Band 2.5: Lokomotiven bayerischer Eisenbahnen (in German). Düsseldorf: Alba Publikation Alf Teloeken GmbH + Co KG. pp. 257–280, 385. ISBN 3-87094-105-7.
  • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 94–96. ISBN 3-87094-081-6.