Patent ID: 7328764

Claim:
A go-kart, comprising: a frame; four wheels coupled directly to the frame such that the four wheels are rigid with the frame but rotate relative to the frame, the coupling of the four wheels defining a horizontal geometric plane; a liquid-cooled engine mounted to the frame; a drive linkage between the engine and at least one of the four wheels; a forward facing seat that is exposed to the ambient and that has a bottom portion and a back portion that extends away from the bottom portion, the bottom portion having a top surface defining a second geometric plane and the back portion having a front surface defining a third geometric plane with a smaller angle between the second geometric plane and the horizontal geometric plane than an angle between the third geometric plane and the horizontal geometric plane, and the bottom portion being mounted to the frame; a heat exchanger in fluid communication with the liquid cooled engine and positioned in front of the forward facing seat such that a fourth geometric plane that is parallel to the horizontal geometric plane extends through a vertically measured center of the heat exchanger and also extends through the back portion of the forward facing seat; and a plenum body that is exposed to the ambient and that is positioned in proximity to the heat exchanger such that the plenum body channels air to the heat exchanger, the plenum body defining an intake opening on a first end of the plenum body and defining a portion having a cross-sectional area larger than an area of the intake opening such that the plenum body defines an expansion chamber between the intake opening and the portion.