Bavarian BB I

4 ft 8+1⁄2 in)Driver dia.1,340 millimetres (4 ft 4+3⁄4 in)Length:
​ • Over beams16,991 or 17,894 mm (55 ft 9 in or 58 ft 8+1⁄2 in)Axle load14.2 t (14.0 long tons; 15.7 short tons)Adhesive weight55.6 t (54.7 long tons; 61.3 short tons)Service weight55.6 t (54.7 long tons; 61.3 short tons)Water cap.13.8 or 18.0 m3 (3,000 or 4,000 imp gal; 3,600 or 4,800 US gal)Boiler pressure14 kgf/cm2 (1.37 MPa; 199 psi)Heating surface:​ • Firebox2.07 m2 (22.3 sq ft) • Evaporative123.00 m2 (1,324.0 sq ft)Cylinders4High-pressure cylinder415 mm (16+5⁄16 in)Low-pressure cylinder635 mm (25 in)Piston stroke630 mm (24+13⁄16 in)
Performance figures
Maximum speed45 or 65 km/h (28 or 40 mph)
Career
NumbersBavaria: 2100
Retired1924

The BB I was a steam locomotive with the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn).

This one-off loco would have been given the operating number 55 7101 by the Reichsbahn in their initial renumbering plan, but in the final one it did not appear as it had been retired in 1924. It can be seen in section today in the Nuremberg Transport Museum.

The engine was initially equipped with a Bavarian 3 T 13,8 tender, later replaced by a Class 2'2' T 18.

See also


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Early locomotives
  • Adler
  • Jupiter and Juno
  • Vesta and Venus
  • Vulkan and Mars
  • Merkur and Diana
  • A I
  • A II
  • A III
  • A IV
  • A V
  • B I
  • B II
  • B III
  • B IV
  • B V
  • B V (artic)
  • C I
  • C II
Royal Bavarian State Railways logo
Passenger and express train locomotivesGoods train locomotivesTank locomotivesBranch line locomotivesNarrow gauge locomotivesElectric locomotives
RailbusesBavarian Ostbahn locomotives
  • A 1 – A 12
  • A 13 – A 24
  • A 1 – A 2
  • B 1 – B 66
  • B 67 – B 78
  • B 79 – B 90
  • B 91 – B 96
  • B 97 – B 109
  • C 1 – C 12
  • C 13 – C 64
  • D 1 – D 12
  • D 13 – D 14
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