Diesel The
British Railways Class 28 is the first (and only) diesel locomotive with a Co-Bo wheel arrangement, where the wheels are independently driven.
C'B' A similar wheel arrangement, with five axles across two bogies, is also used in Japan for the
Class DE10,
DE11, and
DE15 locomotives. As these are
diesel-hydraulic locomotives, they are of C-B arrangement, not Co-Bo. A hydrodynamic transmission on the locomotive frame is driven by the
prime mover, then drive to each bogie is taken by
cardan shafts. The axles of each bogie are all driven, and all geared together, rather than having separate traction motors.
Steam 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.
Electric The also used a Co'Bo' wheel arrangement with three-phase slip-ring motors driving each axle. ==In fiction==