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Show Some Big Mysteries of Automobiles Explained It's funny how people ride around In cars and never know what makes 'cm go. And Just because they don't know, they get Into 11 lot of trouble they would have avoided If they did know. The clutch Is n mechanical hand which holds the engine shaft and the drive shaft together when the car Is going and lets go and separates them when the oar Is not going and the engine en-gine is. The function of the gearset Is to provide a dlirercnl ratio of engine revolution rev-olution to rear wheel revolution; not, as some people fondly suppose, to allow al-low the driver to drive at different speeds, but to provide hlui with more pow or w hen It s nee led. The ilill'crenllal Is an arrangement of gears which Is an elastic transmit, let- of power to the rear wheels -it can deliver more power lo one wheel than Ihe oilier and. therefore, can allow one w heel to rev ohe laslcr or slower than Ihe other. |