Abstract: A casing system for a servo-drive associated with the radio receiver of a remote control system for a vehicle model, in which the servo-drive has a setting member or output arm connectable to the control part of the vehicle model. The casing system comprises a cylindrical mounting frame rigidly connectable with the vehicle model, for enclosing and supporting the servo-drive, and a casing for the servo-drive formed from a plurality of shells whose aggregate has the shape of an approximately circular cylinder. The cylinder of the casing has an outer diameter approximately corresponding with the width of the frame.