This video explores different methods that can be use to amplify a force, and focuses on three types of machine - levers, pulleys and gears. The amplification of a force is called mechanical advantage ...

All bikes with the exception of penny-farthings are geared between the crankset and the rear wheel. Most bikes will include a range of gears, so that you can choose one appropriate to where you’re ...

There are a number of ways to transfer an engine or motor's power into drive, and these are generally split into two camps — automatic and manual transmissions. While gear-based transmissions have ...

If you are more familiar with the gears in your car than the gears on your bike, then you’re not alone. Bike gears, and how ...