| 摘要 |
PURPOSE:To prevent a fan unit from restricting the degree of freedom the arrangement of other constitution parts by arranging the fan unit in a space with is surrounded by a front fork, front wheels, and a radiator on the side view of a car body. CONSTITUTION:As for an off-road motorcycle, 4-cycle parallel two-cylinder engine 20 is supported in the lower part of a car body frame 2, and a radiator 36 for water-cooling the engine 20 is installed, and the radiator 36 is installed on the front surface of a down tube 6. The radiators 36 are arranged on the left and right in pair, and each radiator 36 and each front edge of a cylinder 24 and a carburetor 27 are arranged in proximity in the longitudinal direction. A fan unit 55 for feeding the cooling air is arranged on each radiator 36. In this case, a fan unit 55 is arranged in an excessive space 56 surrounded by a front fork 12, front wheel, and the radiator 36 on the side view of the car body, and the space 56 is effectively utilized. |
