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This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. Mechanical device that connects and disconnects two rotating shafts or other moving parts For other uses, see Clutch (disambiguation). Friction disk for a dry clutch A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's ...
Pontiac used the Roto Hydramatic from 1961-1964 on its shorter-wheelbase full-sized cars including the Catalina, Ventura and Grand Prix, but continued with the older four-speed Super Hydramatic design in the longer-wheelbase Star Chief and Bonneville models. It is believed Pontiac was made to take Roto in the short wheelbase models ( Catalina ...
Slipping the clutch (sometimes referred to as feathering the clutch) is a term used by automotive enthusiasts to describe when the driver alternately applies and releases the clutch to achieve some movement of the car. It's called slipping because the clutch plate will slip against the flywheel surface when such
The best-known is the fluid flywheel, used for touring cars such as the Daimler (Armstrong Siddeley used a centrifugal clutch). [2] Sports cars used a Newton centrifugal clutch . [ 2 ] This was a multiple plate dry clutch , similar to racing manual clutches of the time, but with the pressure plate centrifugally actuated to engage at around ...
Automatic clutch plus a torque converter. Used in the Citroën GS and Citroën CX. Originally called Convertisseur in GS models. 1991–1993: Ferrari Valeo: Automatic electro-mechanical clutch. Used in the Ferrari Mondial t. [77] [78] 1992–1998: RUF EKS: Automatic electro-hydraulic clutch. Used in the Ruf BTR [79] and Ruf BTR2. 1993–1998 ...
Before the introduction of transmission synchronizers in 1927, [2] double clutching was a technique required to prevent damage to an automobile's gearing during shifts. Due to the difficulty and most often unnecessary redundancy involved in the technique, coupled with the advent of synchronized gearing systems, it has largely fallen into disuse in light vehicles.
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A manual transmission requires the driver to manually select the gears [6] by operating a gear stick and clutch (which is usually a foot pedal for cars or a hand lever for motorcycles). Most transmissions in modern cars use synchromesh to synchronise the speeds of the input and output shafts.