P-TYPE CENTRIFUGAL ASYMMETRIC PIVOT CLUTCH Advantages P-Type clutches are extremely narrow. In addition, the asymmetric pivot clutch is the quietest-running clutch in the SUCO product range. For this type of clutch, the performance factor for torque transmission is ca. 1.75 or ca. 1.25 depending on the direction of rotation. Construction and mode of operation Flyweights (1) are normally mounted so that they can pivot on pins (5), which are fitted to a flange. There are tension springs (2) which restrain neighbouring flyweights until centrifugal force overcomes the spring force. Then the flyweights lift from their seats and the bonded linings (3) contact the inside diameter of the clutch drum (4). Due to the asymmetric arrangement of the flyweights, the torque that can be transmitted by this type of clutch depends on the direction of rotation. Click here for a selection criteria form F-Type / S-Type / W-Type / P-Type / Suco