2-4-6T
In Whyte notation, a 2-4-6 is a steam locomotive with two unpowered leading wheels followed by four powered driving wheels and six unpowered trailing wheels. This wheel arrangement is only documented as being used for tank locomotives; no 2-4-6 tender locomotives are recorded.
Equivalent classifications
Other equivalent classifications are:- UIC classification: 1B3
- French classification: 123
- Turkish classification: 26
- Swiss classification: 2/6
Examples
This unusual wheel arrangement does not appear to have been used in any country except the USA.The following railways are recorded as having used locomotives with this wheel arrangement:
- Pennsylvania Railroad: one locomotive built by Altoona in 1882
- Wisconsin Central Railroad: one locomotive built by Burnham, Parry, Williams & Co in 1887
- Boston, Revere Beach and Lynn Railroad: two locomotives built by Mason Machine Works in 1892
- Illinois Central Railroad: ten locomotives built by Rogers in 1893
- Adirondack and St. Lawrence Railroad: one locomotive built by Schenectady in 1893