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[–] 10 points 3 years ago (5 children)

It's a gear which transmits power from the engine to the wheels.

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  • [+] -3 points 3 years ago* (last edited 2 years ago) (4 children)
  • [–] 9 points 3 years ago* (3 children)

    Having multiple gears isn't a necessity. The transmission transmits power from the engine to wheels.

    Chain and sprocket is a type of transmission.

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