Spur gears are the most common type of gears. They have straight teeth, and are mounted on parallel shafts. Occasionally, many spur gears are used at once to create very large والعتاد Super Power Lock reductions.
Spur gears are found in many products that you could see all over 
HowStuffWorks, like the electric powered screwdriver, dancing monster, oscillating sprinkler, windup alarm clock, washing machine and clothes dryer. But you won't discover many in your vehicle.
This is since the spur gear could be really loud. Whenever a equipment tooth engages a tooth on the additional gear, one's teeth collide, and this impact makes a noise. It also increases the pressure on the gear teeth.
To lessen the noise and tension in the gears, the majority of the gears in your car are helical.
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