Co-Bo

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Not to be confused with Kobo

Co-Bo or Co′Bo′ is a wheel arrangement in the UIC classification system for railway locomotives. It features two uncoupled bogies. The "Co" bogie has three driven axles and the "Bo" bogie has two.

Examples[edit]

Diesel[edit]

The British Rail Class 28 is the first (and only) UK locomotive with a Co-Bo wheel arrangement. Other examples worldwide include the class DE10 and DE11 diesel-hydraulic locomotives in Japan.

Steam[edit]

Some Engerth steam locomotives were built to the Fink system, with the four trailing wheels driven by a crankshaft and connecting rods, thus making them 0-6-4-0Ts instead of 0-6-4Ts.

In fiction[edit]

BoCo is a fictional Co-Bo locomotive, a British Rail Class 28. The locomotive appeared in the Thomas the Tank Engine book Main Line Engines.[1]

References[edit]

  1. ^ Awdry, Wilbert (1966). Main Line Engines. Gunvor and Peter Edwards.