The first four steam locomotives designated as Class B IX by the Royal Bavarian State Railways were procured from the locomotive works of Strousberg. They were transferred in 1872 to the Imperial Railways in Alsace-Lorraine. For the remainder, see Bavarian B IX.
| Bavarian B IX (old) |
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| Type and origin |
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| Builder | Strousberg |
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| Build date | 1870 |
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| Total produced | 4 |
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| Specifications |
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Configuration:
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| • Whyte | 0-4-2 |
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| • UIC | B1 n2 |
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| Gauge | 1,435 mm (4 ft 8+1⁄2 in) |
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| Driver dia. | 1,412 mm (4 ft 7+5⁄8 in) |
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| Adhesive weight | 25.2 t (24.8 long tons; 27.8 short tons) |
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| Service weight | 31.7 t (31.2 long tons; 34.9 short tons) |
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| Tender type | 2 T 8 |
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| Fuel capacity | 3.5 t (7,720 lb) |
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| Water cap. | 8.0 m3 (1,800 imp gal; 2,100 US gal) |
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| Boiler pressure | 8.5 kgf/cm2 (834 kPa; 121 lbf/in2) |
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| Heating surface: | |
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| • Firebox | 1.30 m2 (14.0 sq ft) |
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| • Evaporative | 89.00 m2 (958.0 sq ft) |
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| Cylinders | 2 |
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| Cylinder size | 418 mm (16+7⁄16 in) |
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| Piston stroke | 602 mm (23+11⁄16 in) |
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| Valve gear | Allan |
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| Performance figures |
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| Maximum speed | 60 km/h (37 mph) |
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| Career |
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| Numbers | - K.Bay.Sts.E: 503 WÖRTH to 506 MARS LA TOUR
- EL: 347 THUR to 350 MOSSIG
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They were equipped with tenders of Class 3 T 10.
