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Bavarian E I

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The Bavarian Class E I steam locomotives operated by the Royal Bavarian State Railways encompassed four different variants of saturated steam, goods train locomotive with a 2-8-0 wheel arrangement.

Standard variant, older type

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Bavarian E I
Standard variant, older type
Type and origin
BuilderKrauss
Build date1894–1896
Total produced12
Specifications
Configuration:
 • Whyte2-8-0
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.1,006 mm (3 ft 3+58 in)
Driver dia.1,170 mm (3 ft 10+18 in)
Wheelbase:
 • incl. tender12,750 mm (41 ft 10 in)
Length:
 • Over beams16,800 mm (55 ft 1+12 in)
Axle load13.5 t (13.3 long tons; 14.9 short tons) (centre)
Adhesive weight54.0 t (53.1 long tons; 59.5 short tons)
Service weight64.4 t (63.4 long tons; 71.0 short tons)
Tender weight32.8 t (32.3 long tons; 36.2 short tons)
Tender typebay 3 T 12.3
Fuel capacity5,500 kg (12,100 lb) coal
Water cap.12.3 m3 (2,700 imp gal; 3,200 US gal)
Boiler pressure12 kgf/cm2 (1,180 kPa; 171 lbf/in2)
Heating surface:
 • Firebox2.43 m2 (26.2 sq ft)
 • Evaporative159.8 m2 (1,720 sq ft)
Cylinders2
Cylinder size540 mm (21+14 in)
Piston stroke560 mm (22+116 in)
Valve gearWalschaerts (Heusinger), outside
Performance figures
Maximum speed50 km/h (31 mph)
Career
Numbers
  • K.Bay.Sts.E.: 2051–2062
  • État 140-901 to 140-903
Retired1924

The first series of E I's was built by Krauss in 12 examples. The cylinders were positioned in front of the carrying axle and drove the first coupled axle. The carrying and driving axles were linked together in a Krauss-Helmholtz bogie. In addition the outside Walschaerts (Heusinger) valve gear had very short connecting rods on the engines delivered to Bavaria.

The vehicles were coupled with Bavarian Class bay 2'2' T 18 tenders. Later they were equipped with Class 3 T 12.3 tenders from the Bavarian B XI's.

Sondermann Variant

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Bavarian E I
Sondermann variant
Type and origin
BuilderKrauss
Build date1896–1897
Total produced2
Specifications
Configuration:
 • Whyte2-8-0
 • UIC1′D n4v
Gauge1,435 mm (4 ft 8+12 in)
Tender weight32.8 t (32.3 long tons; 36.2 short tons)
Tender typebay 3 T 12.3
Fuel capacity5,500 kg (12,100 lb) coal
Water cap.12.3 m3 (2,700 imp gal; 3,200 US gal)
Boiler pressure13.5 kgf/cm2 (1.32 MPa; 192 lbf/in2)
Cylinders4 (compound)
High-pressure cylinder370 mm (14+916 in)
Low-pressure cylinder710 mm (27+1516 in)
Piston stroke560 mm (22+116 in)
Career
NumbersK.Bay.Sts.E.: 2063–2064
Retired1924
certain technical data as for the newer standard variant; slightly differing weights

The second E I series delivered to the Royal Bavarian State Railways was the Sondermann Variant built from 1896. It had two overlapping cylinders that formed a combined double slide valve (Doppelschieber). The carrying axle and the first driving axle were housed in a Krauss-Helmholtz bogie. The advantage of this locomotive variant was that the double cylinder was very short as a result of the tandem construction. Nevertheless, the engine did not perform especially well, so that the two units were converted into locomotives with a conventional cylinder arrangement.

Standard variant, newer type

[edit]
Bavarian E I
Standard variant, newer type
Type and origin
BuilderKrauss
Build date1899–1901
Total produced48
Specifications
Configuration:
 • Whyte2-8-0
 • UIC1′D n2
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.1,006 mm (3 ft 3+58 in)
Driver dia.1,170 mm (3 ft 10+18 in)
Wheelbase:
 • incl. tender15,425 mm (50 ft 7+14 in)1
Length:
 • Over beams18,202 mm (59 ft 8+12 in)1
Axle load13.6 t (13.4 long tons; 15.0 short tons) (centre)
Adhesive weight54.5 t (53.6 long tons; 60.1 short tons)
Service weight64.5 t (63.5 long tons; 71.1 short tons)
Tender weight34.9 / 36.3 / 43.0 t
Tender type
  • bay 3 T 13.8 or
  • bay 3 T 14 or
  • bay 2'2' T 18
Fuel capacity5.5 / 6.0 / 6.5 t coal
Water cap.13.8 / 14.0 / 18.0 m3
Boiler pressure12 kgf/cm2 (1,180 kPa; 171 lbf/in2)
Heating surface:
 • Firebox2.43 m2 (26.2 sq ft)
 • Evaporative159.8 m2 (1,720 sq ft)
Cylinders2
Cylinder size540 mm (21+14 in)
Piston stroke560 mm (22+116 in)
Valve gearWalschaerts (Heusinger), outside
Performance figures
Maximum speed60 km/h (37 mph)
Career
Numbers
  • K.Bay.Sts.E.: 2065–2099, 2116–2130
  • État: 140-904 to 140-905, 140-907
  • État-Belge: 7374–7375
  • PKP: Tr101-1
Retired1923–1925
1 with bay 2'2' T 18 tender

The third series of the E I locomotive was the final version of this particular class. A total of 48 vehicles were made and 42 were taken over by the Reichsbahn with the numbers 56 312 - 56 353. It was the same as the Sondermann variant after the conversion of the latter. These locomotives could haul a train of 820 tons at a speed of 50 km/h and even attained a speed of 40 km/h with a 1,390 ton train. On a line with a 0.5% incline they could manage an 845-ton train at 25 km/h.

Vauclain Variant

[edit]
Bavarian E I (Vauclain)
Type and origin
BuilderBaldwin
Build date1899
Total produced2
Specifications
Configuration:
 • Whyte2-8-0
 • UIC1′D n4v
Leading dia.914 mm (3 ft 0 in)
Driver dia.1,270 mm (4 ft 2 in)
Length:
 • Over beams18,501 mm (60 ft 8+12 in)
Axle load13.6 t (13.4 long tons; 15.0 short tons) (centre)
Adhesive weight54.4 t (53.5 long tons; 60.0 short tons)
Service weight62.6 t (61.6 long tons; 69.0 short tons)
Tender weight44.0 t (43.3 long tons; 48.5 short tons)
Tender typebay 2'2' T 18.1
Fuel capacity6,500 kg (14,300 lb) coal
Water cap.18.1 m3 (4,000 imp gal; 4,800 US gal)
Boiler pressure14 kgf/cm2 (1.37 MPa; 199 lbf/in2)
Heating surface:
 • Firebox3.08 m2 (33.2 sq ft)
 • Evaporative177.50 m2 (1,910.6 sq ft)
Cylinders4 (compound)
High-pressure cylinder356 mm (14 in)
Low-pressure cylinder610 mm (24 in)
Piston stroke660 mm (26 in)
Valve gearStephenson, inside
Performance figures
Maximum speed50 km/h (31 mph)
Career
Numbers
  • K.Bay.Sts.E.: 2085–2086
  • État: 140-906
Retired1917-1919

The Class E I locomotives built for the Royal Bavarian State Railways by the Baldwin were goods train steam locomotives imported from the United States for testing purposes.

The two machines were the first in Germany to have a bar frame, which had been standard in the USA virtually from the beginning and which had been developed from the wooden beam frames of the early locomotives.

Like the two S 2/5 express train locomotives also imported from Baldwin a year later these engines were equipped with a four-cylinder Vauclain compound engine, on which the high-pressure and low-pressure cylinders were located directly one above the other and worked on the same connecting rods. Apart from the bar frame, this type of drive did not catch on in Bavaria.

The locomotives were equipped with Bavarian 2'2' T 18,1 tenders.

See also

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Sources

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  • Merkbuch für die Fahrzeuge der Reichsbahn. I. Dampflokomotiven und Tender (Regelspur). Ausgabe 1924. Berlin: Eisenbahn-Zentralamt Berlin. 1924.
  • Scheingraber, Günther (1975). Die Königlich Bayerischen Staatseisenbahnen. Stuttgart: Franckh. ISBN 3-440-04233-2.
  • Vandenberghen, J. (1989). La guerre 1914 - 1918 et les locomotives "Armistice", 3. Description des locomotives bavaroises, saxonnes, badoises, mecklebourgeoises, oldenbourgeoises (PDF) (in French). Brussels: SNCB. p. 28.
  • v. Welser, Ludwig (1996). Bayern-Report Band No. 6. Fürstenfeldbruck: Merker. ISBN 3-922404-94-4.