Gears are used to change the speed and force of the motor. You can use gears to:
1. Speed up or slow down your robot.
2. Make your robot stronger or weaker.
There are many different types of gears. Spur gears are wheels with teeth.
|Bevel gears mesh at right angles, so they change the direction of rotation.|
|Worm gears look like screws. They have many special properties.|
|Rack & pinion gears turn rotational motion into straight-line motion.|
|A slip clutch is a special type of spur gear that lets the axle continue to rotate if the gear gets stuck.|
|Just for fun: Look around your house and make a list of all the things that you can find that use gears.|
See also: Lego gear combinations, Compound Gear Ratios, Belts & Pulleys