Abstract: A bogie for a self-propelled railway car comprises a brake for at least two wheel sets, the axle of one of which can be driven by an electric motor through a gear train. According to the invention, not only is the support frame mounted upon a pin depending from the vehicle chassis and a secondary spring suspension provided between this frame and the chassis, but the pin also carries at least part of the weight of the motor and drive train and/or the brake system. Both the drive train and the brake system are connected to the driven axle by a universal joint shaft arrangement and a primary suspension is provided between the axles and the frame.

Abstract: A bogie for a railroad vehicle comprises a pair of wheel sets mounted in a frame which is pivotally connected to the vehicle so that it can rotate about a substantially upright axis. The wheel sets are connected to the frame resiliently and by links which, upon the application of unbalanced force, axially to one of the wheel sets shifts the force-receiving end toward the other wheel set. The links can also be disposed so that any tendency for one of the wheel sets to move downwardly relative to the frame will result in a tendency for it also to move closer to the other wheel set. This has been found to increase high speed stability of the vehicle.