eli5: how do gears work on a pedal bike and how do you use them to make cycling easier?

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I’ve tried reading explanatory articles and I just don’t understand. Feels like a dumb question but they all say things like “shift down gear” and I don’t know what that actually physically means doing to the gears. Or, the articles assume I have a bike to look at and test it out on, which I don’t.

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4 Answers

Anonymous 0 Comments

Big gears have many teeth, small gears have few teeth.

When the pedals are connected to a gear with many teeth and the wheel is connected to a gear with few teeth a few turns of the pedals causes many turns of the wheel. This gives fast speed, but requires more force on the pedals.

To make the bike go slower while being easier to pedal, use a gear with fewer teeth on the pedal and more teeth on the wheel.

Confusingly, at the wheel, “a lower gear” means a gear with more teeth and “a higher gear” means a gear with fewer teeth. At the pedals, “a lower gear” means less teeth and “a higher gear” means more teeth. Not my fault.

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