"All you need to know about repairing the clutch"
"Clutch Repair Coventry, car repair Coventry ( 650+ words)"
[ "What is a car clutch?The clutch is a device that enables the driver to shift gears in a manual transmission or change lanes in an automatic transmission. The most common use for the clutch pedal is to shift gears between "Park," "Neutral," and "Drive" on automatics, but this term can also be used for any gear shift system. There are two main types of clutches on cars with automatic transmissions: disk clutches or drum clutches. Drum clutch is most commonly used on older style 4-speed transmissions with external linkage, primarily found in old rear-wheel-drive cars built before the 1980s and continue to be used todayDisk clutches first appeared inside the bell housing of mid-1950s Cadillac models and began to appear as a separate unit in front of the transmission on the driver's side of the vehicle. A disk clutch has a metal disk called a flywheel that is splinted to rotate with the engine crankshaft but not meshed to it directly. The disks may be either integral (i.e., machined out of one piece of material) or replaceable (a separate plate can be replaced without replacing the flywheel). Unlike inherently self-adjusting drum clutches, disk clutches use an external adjusting mechanism, making them more expensive and maintenance-intensive than drum clutchesThe clutch pedal in manual cars engages and disengages power from the engine by compressing this spring against its solid steel backing plate, causing friction between the clutch disk and the flywheel inside the transmission. This transmits power to the gearbox while disengaging the engine from the rest of the driveline to run independently while not propelling the carThe Clutch Repair Coventry is operated by a hydraulic system (a combined effort of the master and slave cylinders) which pushes or pulls on hydraulic actuators attached to clutches in modern manual transmissions. The pressure plate in a clutch assembly sandwiches friction material, such as clutch lining, between itself and a flywheel (or other cover plates), thus providing friction against which the drive torque is transmitted when pressure is applied via hydraulic actuator arms. These arms then push or pull on levers that actuate release bearings; these allow for slack in the drive train to allow gear changes. Older cars had a separate clutch release arm, but this was integrated into the lever of more car repair Coventry modern transmissionsThe first automobiles had purely mechanical clutches. Franck Ribera (engineer) probably designed the first dry multiple plate clutch, perhaps intended by Franck Ribera (engineer) sometime between 1898 and 1901. According to some sources, the first epicyclical gearing system - that is, a stepped gearing arrangement that allowed one rotation of an input shaft to perform more than one rotation of an output shaft - may have been invented in 1894 by two colleagues named Magneto and Tessie du Buat while working at Laboratories Central des Services Critiques de dtat, Paris. However, according to others, this honour should go to an automotive pioneer named Jean-Joseph Merlin (18781963), who designed the "pre-Merlin" epicyclical gear train in 1903The classic shift fork mechanism is not strictly a clutch but instead operates the transmission's gear selector. This device came into use in automobiles c. 1907-1908. It was used primarily in older manual transmissions until the 1940s and 1950s when more modern designs became the norm for most cars produced after WWII. Until then, it had to be manually engaged or disengaged employing depressing or lifting the lever under the steering column; see stick shift for further explanation). After changing gears, it is necessary to clear (and depress) this clutch pedal, known as "shifting out," to bring the car up to speed. This would be done just before starting and when changing gears while drivingSome better-engineered cars came with a synchromesh, which eliminated this extra step by providing synchronized teeth on the selector or matching those of the gear that was being selected, so there was no need to depress the clutch pedal between shifts once it had been depressed. Synchrony systems are most common in modern manual transmission vehicles, but earlier, they were used for automatic transmissionsEven more advanced is the torque converter design, which uses hydraulics instead of friction surfaces to provide coupling between engine and transmission, still allowing operation without requiring the driver's attentionTorque converters use a torque converter to allow the engine to run at its optimum speed while permitting vehicle and road speed to be freely variableWhen used with an automatic transmission, modern cars may also offer dual-clutch or double-clutch information (DCT), sometimes called a Steptronic. These transmissions use computer assistance, allowing much faster gear changes than would typically be possible in a manual car without upsetting the smooth delivery of power from either the engine or the batteriesDual-clutch transmission has two separate clutches for odd and even gears. When one clutch is engaged, it can immediately disengage again and then engage its opposite mate just as quickly, meaning there is no moment in which both clutches are open." ]