Drawgear

Constructional features of the railbus include the use of rubber suspension for axlebox/underframe and underframe/body mountings, the use of B.U.T. power transmission equipment, many components of which are interchangeable with those on British Railways standard railcars, power-operated sliding doors, and an absence of normal sidebuffers or drawgear.

Although loads of up to 900 tonnes could be handled by one of these locomotives, in practice the load is limited to 790 tonnes by drawgear.