Patent ID: 8104565

Claim:
A body frame comprising: a head pipe arranged to receive a steering shaft therein, the head pipe including a cylindrical portion and a body section, the cylindrical portion arranged to surround the steering shaft and the body section arranged to extend downward and rearward from the cylindrical portion; a first frame connected to the head pipe and supporting a rear arm to which a rear wheel is attached, the first frame including a left frame and a right frame each directly connected to and branching from the cylindrical portion of the head pipe; a second frame connected at one end only to the body section of the head pipe and at the other end to the first frame; a down tube including one end defining a lower section of the cylindrical portion of the head pipe and arranged to extend downward and rearward from the head pipe to a location lower than a lowermost end of the body section of the head pipe, the one end of the down tube arranged to surround the steering shaft; and a support plate connected to the second frame and arranged to support a top end of an engine; wherein the body section of the head pipe extends downward and rearward along at least a portion of the down tube.