Patent ID: 8210334

Claim:
A motorcycle, comprising: an engine that generates a drive force; a drive wheel; a centrifugal clutch configured to transmit drive force from the engine to the drive wheel; and a clutch actuating element configured to disengage the centrifugal clutch when activated by a rider, wherein the centrifugal clutch comprises: a drive-side solid of revolution including a first plate; a driven-side solid of revolution including a second plate opposed to the first plate in a predetermined direction; a pressure plate attached to the drive-side solid and configured to rotate with the drive-side solid of revolution, the pressure plate pressing the first plate into the second plate by moving in the predetermined direction, and the pressure plate pressing the first plate into the second plate with sufficient force to transmit a portion of the torque of the drive-side solid of revolution from the first plate to the driven side solid of revolution via the second plate when the engine is in an idling state; and a centrifugal weight that moves outward in a radial direction of the pressure plate according to a centrifugal force applied to the weight, the centrifugal weight increasing the force by which the pressure plate presses the first plate into the second plate as it moves outward in the radial direction.