Bavarian B XI
The Class B XI engines of the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn) were built between 1895 and 1900 by the firm of Maffei for deployment in Bavaria. The first delivery comprised 39 vehicles with two-cylinder, saturated steam operation, a further 100 two-cylinder compound locomotives followed in the period up to 1900.
| Bavarian B XI Zwilling (two-cylinder simple) DRG Class 36.7–8 | |
|---|---|
| Number(s) |
|
| Quantity | 39 |
| Manufacturer | Maffei |
| Year(s) of manufacture | 1892–1893 |
| Retired | by 1926 |
| Wheel arrangement | 4-4-0 |
| Axle arrangement | 2′B n2 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers |
|
| Wheelbase incl. tender |
|
| Service weight | 50.4 t (49.6 long tons; 55.6 short tons) |
| Adhesive weight | 28.5 t (28.0 long tons; 31.4 short tons) |
| Axle load | 14.3 t (14.1 long tons; 15.8 short tons) |
| Top speed | 90 km/h (56 mph) |
| Driving wheel diameter | 1,870 mm (6 ft 1 5⁄8 in) |
| Leading wheel diameter | 1,006 mm (3 ft 3 5⁄8 in) |
| Valve gear | Walschaerts (Heusinger), outside |
| No. of cylinders | Two, simple |
| Cylinder bore | 430 mm (16 15⁄16 in) |
| Piston stroke | 610 mm (24 in) |
| Boiler Overpressure | 12 kg/cm2 (1,180 kPa; 171 lbf/in2) |
| Grate area | 2.24 m2 (24.1 sq ft) |
| Evaporative heating area | 116.2 m2 (1,251 sq ft) |
| Tender |
|
| Tender service weight | 36.0 or 43.0 t (35.4 or 42.3 long tons; 39.7 or 47.4 short tons) |
| Water capacity | 14.5 or 18.0 m3 (3,190 or 3,960 imp gal; 3,830 or 4,760 US gal) |
| Fuel | 6.0 or 6.5 t (5.91 or 6.40 long tons; 6.61 or 7.17 short tons) of coal |
| 1 with bay 3 T 14.5 tender 2 with bay 2′2′ T 18 tender | |
| Bavaian B XI Verbund (two-cylinder compound) DRG Class 36.7–8 | |
|---|---|
| Number(s) |
|
| Quantity | 100 |
| Manufacturer | |
| Year(s) of manufacture | 1895–1900 |
| Retired | by 1931 |
| Axle arrangement | 2′B n2v |
| Length over buffers | 16,986 mm (55 ft 8 3⁄4 in) |
| Wheelbase incl. tender | 14,095 mm (46 ft 3 in) |
| Service weight |
|
| Adhesive weight |
|
| Axle load |
|
| No. of cylinders | Two, compound |
| LP cylinder bore | 670 mm (26 3⁄8 in) |
| HP cylinder bore | 455 mm (17 15⁄16 in) |
| Piston stroke | 610 mm (24 in) |
| Boiler Overpressure | 13 kg/cm2 (1,270 kPa; 185 lbf/in2) |
| Grate area | 2.26 m2 (24.3 sq ft) |
| Evaporative heating area | 116.8 m2 (1,257 sq ft) |
| Tender | bay 2′2′ T 18 |
| Tender service weight | 43.0 t (42.3 long tons; 47.4 short tons) |
| Water capacity | 18.0 m3 (3,960 imp gal; 4,760 US gal) |
| Fuel | 6.5 t (6.40 long tons; 7.17 short tons) of coal |
| 3 from no. 1318 Only differences from above shown | |
The Deutsche Reichsbahn took over 8 engines from the first batch as Class 36.7, with operating numbers 36 701 to 36 708, and 76 of the second batch, with numbers 36 751 to 36 826.
These steam locomotives were equipped with Bavarian 3 T 12, 3 T 14.5 and 2'2' T 18 tenders. These vehicles were the first locos that were give a four-axle tender.
Sources
- This page incorporates a translation of the equivalent page on the German language Wikipedia
| 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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