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Why do bycycles have gears?

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Anonymous

17y ago
Updated: 8/17/2019

The same reason that cars have gears. The body is happiest when it can keep the pedals turning at 80-100 RPM, so to be able to both climb hills and hit good speeds at the flats you need to be able to change gear ratios.

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Wiki User

17y ago

What else can I help you with?