French locomotive classification
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Under the French classification system for locomotive wheel arrangements, the system is slightly different for steam and electric/diesel vehicles.
Steam
[edit source]The French system counts axles, rather than wheels.[1] As with Whyte notation, a conventional rigid locomotive will have three digits corresponding to its axle configuration:
The first digit is the number of leading unpowered axles; the second digit the number of powered axles; The third digit the number of trailing unpowered axles.
Examples
[edit source]0-6-0 = 030
2-6-0 = 130
0-6-2 = 031
4-6-2 = 231
2-8-0 = 140
4-8-0 = 240
4-6-4 = 232
4-8-4 = 242
2-6-6-2 = 130+031
Electric and diesel
[edit source]With electric and diesel vehicles include DMUs a letter A-B-C-D replaces 1-2-3-4 for the number of powered axles, and each bogie is grouped separately.
0-4-0+0-4-0 = B-B (if axles connected by rods or other means)
0-6-0+0-6-0 = Co-Co (if axles driven independently)
See also
[edit source]References
[edit source]- ↑ Peck, C.B. (1950). Locomotive Cyclopedia of American Practice, 1950-52: Definitions, Drawings and Illustrations of Diesel, Steam, Electric and Turbine Locomotives for Railroad, Industrial and Foreign Service; Their Parts and Equipment; Descriptions and Illustrations of Locomotive Shops and Servicing Facilities. Simmons-Boardman Publishing Company.
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