All About Gears
Information on gears & how we use them in our everyday lives
What Are Gears
Gears are wheels that have teeth around them and could mesh with other gears. When a gear meshes with another gear, it could create a mechanical advantage. There are lots of different types of gears. Here are some of the gears that I have learned and would like to share with you: Spur gear, Worm gear, Bevel Gear, Rack and pinion gear, herringbone gear, and a compound gear. Gears are also able to change the direction or/and speed of the movement.
Different Types of Gears
Spur Gear
Spur gears have straight teeth and flat surfaces on them. They are able to change the direction and speed of motion.
Worm gear
A worm gear looks like a worm and also like a screw. It could connect/attach to other gears.
Bevel gear
A bevel gear is when two gears work together and connect at an angle. It also has cone-shaped teeth.
Rack and pinion gear
In a rack and pinion gear, the rack is the/a flat gear, but it still has teeth on it. The pinion is the normal gear, like a spur gear.
Herringbone gear
A herringbone gear has v-shaped teeth on it and meets on the side of it.
Compound gear
A compound gear isn't just a gear itself, it is made up of spur gears
Bicycles and Compounds Gears
Bicycles and Compound Gears
A bicycle is used for exercise and transportation. You could find it at bike stores, and you may also find someone riding one. In a bicycle there are compound gears. Bicycles come in different sizes, so there are different amounts of compound gears on bicycles. The compound gears are on the back wheel of the bicycle.
How does a bicycle work
A bicycle works when your foot puts force on the pedal. The pedal is connected to a chain, and the chain is connected to some compound gears. When you put some force from your foot on the pedal, it allows the chain to move. But, since the chain is connected to the compound gears, all the gears move, rotating in different directions. That allows the bicycle to move. The more faster your foot pedals the bike, the more faster the bike will go.
Gear system/Gear train
Above this text is a picture of a gear system/gear train. It shows where the axle, the teeth, the meshed area, the gear, and the direction of motion is.
Gear Basics