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Definition of the noun 2-6-6-6

What does 2-6-6-6 mean as a name of something?


  1. Under the Whyte notation system, an articulated locomotive with two leading wheels on a leading truck, two sets of six driving wheels, and six trailing wheels on a trailing truck. This arrangement was used only on the C&O which called it the Allegheny and the Virginian, which named it the Blue Ridge.


The 2-6-6-6 is an articulated locomotive type with 2 leading wheels, two sets of six driving wheels and six trailing wheels. Only two classes of the 2-6-6-6 type were built. One was the "Allegheny" class, built by the Lima Locomotive Works. The name comes from the locomotive's first service with the Chesapeake and Ohio Railway beginning in 1941. The other was the "Blue Ridge" class for the Virginian Railway. These were the heaviest reciprocating steam locomotives ever built, at 389 tons for the locomotive itself plus 215 tons for the loaded tender.

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