Abstract: A self-righting remote control vehicle including a chassis, paired front and rear wheels rotatably mounted on the respective left and right sides of the chassis, and an upwardly tapered, generally pyramidal-shaped body mounted on the chassis. Each of the wheels has a peripheral portion which extends beyond the lower rear and side edge margins of the body such that when the vehicle is rolled over, a portion of at least one of the wheels normally engages the supporting surface. The vehicle further includes two separate drive systems for respectively rotatably driving the left and right pairs of front and rear wheels, and still further includes a remote control receiver for receiving control signals from a remote control transmitter and a controller for selectively independently controlling the separate drive systems responsive to the control signals received.

Abstract: A remote control toy motorcycle includes a steering link and a four-bar linkage to connect a front castering wheel to a chassis, to utilize the castering wheel principle and the counter steering principle in a manner which enhances the stability of the motorcycle, thereby enabling it to be operated on rugged terrain. A steering drive responds to radio signals to cause the link to pivot the four-bar linkage to initiate and maintain a turn. The four-bar linkage has spaced members located on opposite sides of the longitudinal axis, with rearward ends pivotally connected to the chassis at locations further from the longitudinal axis than forward ends which pivotally connect to the front wheel fork coupler. The structure enables pivotal movement of the front wheel about a castering arc which is projected in front of the four-bar linkage. The toy vehicle further includes a weighted flywheel assembly incorporated within the rear wheel, to further enhance stability.