An adjustable mass clutch weight for use in a CVT clutch is provided. The adjustable mass clutch weight may include an elongate body having a heel and a tip; a first protrusion having external threads extending from a first side of the elongate body at the heel. The adjustable mass clutch weight may also include a second protrusion having external threads extending from a second side of the elongate body at the heel. The adjustable mass clutch weight may also include a mounting aperture extending through the first protrusion, the elongate body and the second protrusion; and at least one mass adjustment weight with a threaded aperture extending through the at least one mass adjustment weight. The at least one mass adjustment weight may be coupled to the first threaded protrusion and/or the second threaded protrusion to adjust the mass of the adjustable mass clutch weight at the heel of the elongate body.

A flyweight comprises a body. The body of the flyweight comprises a pivot, a cam surface, and a first coupler. The first coupler is configured to selectively couple at least one first weight to the body distal from the cam surface. A flyweight comprises a body having at least 20% of its mass positioned to contribute negative torque about a pivot related to an acceleration of a CVT clutch from an idling condition. A method of tuning a flyweight comprises attaching at least one first weight to a first coupler of a body of the flyweight distal from a cam surface of the body. A CVT clutch comprises at least one flyweight with a first coupler configured to selectively couple at least one first weight to a body of the flyweight distal from a cam surface.

The present invention relates to a continuously variable transmission (1000, 8000) for a bicycle comprising: input means (1100, 2100, 3100), output means (1300, 2300, 3300, 4300, 300, 6300), and transmission means (1200) connecting the input means to the output means, wherein the output means comprise output controlling means (1340, 2340, 3340, 4340, 5340, 6340) controlling a gear ratio of the output means, wherein the continuously variable transmission is a V-belt type continuously variable trans mission.

A flyweight comprises a body. The body of the flyweight comprises a pivot, a cam surface, and a first coupler. The first coupler is configured to selectively couple at least one first weight to the body distal from the cam surface. A flyweight comprises a body having at least 20% of its mass positioned to contribute negative torque about a pivot related to an acceleration of a CVT clutch from an idling condition. A method of tuning a flyweight comprises attaching at least one first weight to a first coupler of a body of the flyweight distal from a cam surface of the body. A CVT clutch comprises at least one flyweight with a first coupler configured to selectively couple at least one first weight to a body of the flyweight distal from a cam surface.

An adjustable mass clutch weight for use in a CVT clutch is provided. The adjustable mass clutch weight may include an elongate body having a heel and a tip; a first protrusion having external threads extending from a first side of the elongate body at the heel. The adjustable mass clutch weight may also include a second protrusion having external threads extending from a second side of the elongate body at the heel. The adjustable mass clutch weight may also include a mounting aperture extending through the first protrusion, the elongate body and the second protrusion; and at least one mass adjustment weight with a threaded aperture extending through the at least one mass adjustment weight. The at least one mass adjustment weight may be coupled to the first threaded protrusion and/or the second threaded protrusion to adjust the mass of the adjustable mass clutch weight at the heel of the elongate body.

A utility vehicle comprises a traveling driving power source which generates rotational driving power for driving a drive wheel; a continuously variable transmission including an input shaft to which the rotational driving power transmitted from the traveling driving power source is input, an output shaft which outputs the rotational driving power toward the drive wheel, a drive pulley provided at the input shaft, a driven pulley provided at the output shaft, and a belt wrapped around the drive pulley and the driven pulley; a clutch which is disposed in a driving power transmission path at a location that is between the belt and the drive wheel and is capable of disconnecting the driving power transmission path; and a clutch actuator which operates the clutch.

A utility vehicle comprises a traveling driving power source which generates rotational driving power for driving a drive wheel; a continuously variable transmission including an input shaft to which the rotational driving power transmitted from the traveling driving power source is input, an output shaft which outputs the rotational driving power toward the drive wheel, a drive pulley provided at the input shaft, a driven pulley provided at the output shaft, and a belt wrapped around the drive pulley and the driven pulley; a clutch which is disposed in a driving power transmission path at a location that is between the belt and the drive wheel and is capable of disconnecting the driving power transmission path; and a clutch actuator which operates the clutch.

A utility vehicle comprises a traveling driving power source which generates rotational driving power for driving a drive wheel; a continuously variable transmission including an input shaft to which the rotational driving power transmitted from the traveling driving power source is input, an output shaft which outputs the rotational driving power toward the drive wheel, a drive pulley provided at the input shaft, a driven pulley provided at the output shaft, and a belt wrapped around the drive pulley and the driven pulley; a clutch which is disposed in a driving power transmission path at a location that is between the belt and the drive wheel and is capable of disconnecting the driving power transmission path; and a clutch actuator which operates the clutch.

An alternator assembly includes: an alternator having an alternator input; a variable transmission assembly including an input pulley, an output pulley coupled to the input pulley and the alternator input, and a solenoid configured to adjust a gear ratio between the input pulley and the output pulley; a rotation speed sensor coupled with at least one of the output pulley or the alternator input and configured to output a first signal; and a controller. The controller is configured to determine the rotation speed of the alternator input based on the first signal; compare the rotation speed of the alternator input to a set rotation speed; and output an adjustment signal if the rotation speed of the alternator input differs from the set rotation speed so the solenoid adjusts the gear ratio such that the rotation speed of the alternator input is equal to the set rotation speed.

A slide roller is provided. A lower connecting surface of the roller is never in contact with a roller passage surface. By taking advantage of a normal distance between a corner sliding surface and a center point of the roller greater than a vertical distance between an upper sliding surface of the roller and the center point, a pulley disc assembly can be started lightly, the acceleration in the middle stage of the slide stroke is increased, and speed transmission in the rear stage of the slide stroke is increased.