a nut 34 in a known manner the wheel 32 has a rim 35 that is provided with axially offset bead seats 36 and 37 that mount a respective balloon tire 38 to form the front wheel assemblies indicated generally by the reference numeral 39 the center of the wheel assemblies 39 is defined by the line a which as will be noted from the cross sectional view in fig1 is offset from the hub center 33 of the wheel 32 and specifically from a plate 41 that connects the hub center 33 with the rim 36 contained within the offset portion of the wheel assembly 39 is a drum brake assembly indicated generally by the reference numeral 42 the drum brake assembly 42 includes a drum 43 that is supported for rotation with the wheel assembly 39 and a backing plate 44 that is fixed against rotation relative to the spindle 31 but which is steerable with it about the king pin 29 the drum brake assembly 42 is of the internal shoe expanding type and is mechanically actuated by a cam member 45 that is supported for rotation about the backing plate 44 at a generally lowermost axis the manner for actuating the brakes 42 will be described below the steering shaft 22 is connected to a pair of tie rods 46 and 47 which are in turn connected to respective links 48 that are affixed to the spindles 31 for steering the front wheels 39 the steering shaft 22 is located on the longitudinal center line of the vehicle particularly since it is intended to be operated by a single rider on the seat 17 a front fender assembly 51 is carried by the.