| 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