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1、HowClucthesWorkIfyoudriveamanualtransmissioncar,youmaybesurprisedtofindoutthatithasmorethanoneclutch.Anditturnsoutthatfolkswithautomatictransmissioncarshaveclutches,too.Infact,thereareclutchesinmanythingsyouprobablyseeoruseeveryday:Manycordlessdrillshaveaclutch,chai
2、nsawshaveacentrifugalclutchandevensomeyo-yoshaveaclutch.ClutchGalleryQEngineQClutchQClutchPedalQManualTransmission©2000HemStunWorMDiagramofcarshowingclutchlocation.Seemoreclutchimages^Inthisarticle,yourlllearnwhyyouneedaclutch,howtheclutchinyourcarworksandfindoutsom
3、einteresting,andperhapssurprising,placeswhereclutchescanbefound.Clutchesareusefulindevicesthathavetworotatingshafts.Inthesedevices,oneoftheshaftsistypicallydrivenbyamotororpulley,andtheothershaftdrivesanotherdevice.Inadrill,forinstance,oneshaftisdrivenbyamotorandthe
4、otherdrivesadrillchuck.Theclutchconnectsthetwoshaftssothattheycaneitherbelockedtogetherandspinatthesamespeed,orbedecoupledandspinatdifferentspeeds・Inacar,youneedaclutchbecausetheenginespinsallthetime,butthecar'swheelsdonot.Inorderforacartostopwithoutkillingtheengine
5、,thewheelsneedtobedisconnectedfromtheenginesomehow.Theclutchallowsustosmoothlyengageaspinningenginetoanon-spinningHowClucthesWorkIfyoudriveamanualtransmissioncar,youmaybesurprisedtofindoutthatithasmorethanoneclutch.Anditturnsoutthatfolkswithautomatictransmissioncars
6、haveclutches,too.Infact,thereareclutchesinmanythingsyouprobablyseeoruseeveryday:Manycordlessdrillshaveaclutch,chainsawshaveacentrifugalclutchandevensomeyo-yoshaveaclutch.ClutchGalleryQEngineQClutchQClutchPedalQManualTransmission©2000HemStunWorMDiagramofcarshowingclu
7、tchlocation.Seemoreclutchimages^Inthisarticle,yourlllearnwhyyouneedaclutch,howtheclutchinyourcarworksandfindoutsomeinteresting,andperhapssurprising,placeswhereclutchescanbefound.Clutchesareusefulindevicesthathavetworotatingshafts.Inthesedevices,oneoftheshaftsistypic
8、allydrivenbyamotororpulley,andtheothershaftdrivesanotherdevice.Inadrill,forinstance,oneshaftisdrivenbyamotorandtheotherdrivesadrillchuck.T
