Bavarian E I
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
| Bavarian E I Standard variant, older type | |
|---|---|
| Number(s): | Bavaria: 2051–2062 France: Etat 140-901 to 903 |
| Quantity: | 12 |
| Manufacturer: | Krauss |
| Year(s) of manufacture: | 1894–1896 |
| Retired: | 1924 |
| Wheel arrangement: | 2-8-0 |
| Axle arrangement: | 1'D n2 |
| Gauge: | 1435 mm |
| Length over buffers: | 16800 mm |
| Wheelbase incl. tender: | 12750 mm |
| Service weight: | 64.4 t |
| Adhesive weight: | 54,0 t |
| Axle load: | 13.5 t (centre) |
| Top speed: | 50 km/h |
| Driving wheel diameter: | 1170 mm |
| Leading wheel diameter: | 1006 mm |
| Valve gear: | Walschaerts (Heusinger), outside |
| No. of cylinders: | 2 |
| Cylinder bore: | 540 mm |
| Piston stroke: | 560 mm |
| Boiler Overpressure: | 12 kg/cm² = 11.77 bar |
| Grate area: | 2.43 m² |
| Evaporative heating area: | 159.8 m² |
| Tender: | bay 3 T 12.3 |
| Tender service weight: | 32.8 t |
| Water capacity: | 12.3 m³ |
| Fuel: | 5.5 t coal |
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
| Bavarian E I Sondermann variant | |
|---|---|
| Number(s): | Bavaria: 2063–2064 |
| Quantity: | 2 |
| Manufacturer: | Krauss |
| Year(s) of manufacture: | 1896–1897 |
| Retired: | 1924 |
| Wheel arrangement: | 2-8-0 |
| Axle arrangement: | 1'D n4v |
| Gauge: | 1435 mm |
| No. of cylinders: | 4 |
| Cylinder bore: | 2x370/710 mm |
| Piston stroke: | 560 mm |
| Boiler Overpressure: | 13.5 kg/cm² = 13.24 bar |
| Tender: | bay 3 T 12.3 |
| Tender service weight: | 32.8 t |
| Water capacity: | 12.3 m³ |
| Fuel: | 5.5 t coal |
| 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
| Bavarian E I Standard variant, newer type | |
|---|---|
| Number(s): | Bavaria: 2065–2099, 2116–2130 France: Etat 140-904 to 905, 907 Belgium: Etat Belge 7374–7375 Poland: PKP Tr101-1 |
| Quantity: | 48 |
| Manufacturer: | Krauss |
| Year(s) of manufacture: | 1899–1901 |
| Retired: | 1923–1925 |
| Wheel arrangement: | 2-8-0 |
| Axle arrangement: | 1'D n2 |
| Gauge: | 1435 mm |
| Length over buffers: | 18202 mm1 |
| Wheelbase incl. tender: | 15425 mm1 |
| Service weight: | 64.5 t |
| Adhesive weight: | 54.5 t |
| Axle load: | 13.6 t (centre) |
| Top speed: | 60 km/h |
| Driving wheel diameter: | 1170 mm |
| Leading wheel diameter: | 1006 mm |
| Valve gear: | Walschaerts (Heusinger), outside |
| No. of cylinders: | 2 |
| Cylinder bore: | 540 mm |
| Piston stroke: | 560 mm |
| Boiler Overpressure: | 12 kg/cm² = 11.77 bar |
| Grate area: | 2.43 m² |
| Evaporative heating area: | 159.8 m² |
| Tender: | bay 3 T 13.8 bay 3 T 14 bay 2'2' T 18 |
| Tender service weight: | 34.9 / 36.3 / 43.0 t |
| Water capacity: | 13.8 / 14.0 / 18.0 m³ |
| Fuel: | 5.5 / 6.0 / 6.5 t coal |
| 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
| Bavarian E I (Vauclain) | |
|---|---|
| Number(s): | Bavaria: 2085–2086 France: Etat 140-906 |
| Quantity: | 2 |
| Manufacturer: | Baldwin |
| Year(s) of manufacture: | 1899 |
| Retired: | 1917-1919 |
| Wheel arrangement: | 2-8-0 |
| Axle arrangement: | 1'D n4v |
| Length over buffers: | 18,501 mm |
| Service weight: | 62.6 t |
| Adhesive weight: | 54.4 t |
| Axle load: | 13.6 t (centre) |
| Top speed: | 50 km/h |
| Driving wheel diameter: | 1,270 mm |
| Leading wheel diameter: | 914 mm |
| Valve gear: | Stephenson, inside |
| Cylinder bore: | 2 x 356/610 mm |
| Piston stroke: | 660 mm |
| Boiler Overpressure: | 14 kg/cm² = 13,73 bar |
| Grate area: | 3.08 m² |
| Evaporative heating area: | 177.50 m² |
| Tender: | bay 2'2' T 18.1 |
| Tender service weight: | 44.0 t |
| Water capacity: | 18.1 m³ |
| Fuel: | 6.5 t coal |
The Class E I locomotives built for the Royal Bavarian State Railways by the Baldwin were goods train steam locomotives imported from the USA 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
Sources
- Eisenbahn-Zentralamt Berlin: Merkbuch für die Fahrzeuge der Reichsbahn. I. Dampflokomotiven und Tender (Regelspur). Ausgabe 1924, Berlin 1924
- Günther Scheingraber: Die Königlich Bayerischen Staatseisenbahnen, Franckh, Stuttgart 1975, ISBN 3-440-04233-2
- Ludwig v. Welser: Bayern-Report Band No. 6, Merker, Fürstenfeldbruck 1996, ISBN 3-922404-94-4
External links
- There is a relevant English-language forum at Railways of Germany
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