Gears and Mechanisms

4. Two or more gears meshed together
5. Gear located between two other gears causing the two outside gears to turn in the same direction
7. A gear system consisting of one or more outer gears revolving around a central sun gear and held together by a ring gear
8. Counting and comparing these on two meshed gears will give you the gear ratio
10. Measuring and comparing this on two meshed gears will also give you the give ratio
12. A long, cylindrical gear used to change rotary direction of motion.
14. Gear within gear train that causes motion
19. An example of an inner axle turning an outer wheel
20. An example of an outer wheel turning and inner axle
21. The state in which the rotating force clockwise equals the rotating counterclockwise so that movement stops.
23. A wheel and axle are actually this attached to a shaft
25. An enclosed casing containing various sized gears which provide different engine torque and speed to an axle.
26. Name given to gears locked together on the same shaft that always turn in the same direction and at the same speed
27. Gears with winding teeth that provide better meshing, smoother operation, less noise and heat, and can operate at higher speeds.

1. This is increased when the driver gear is larger than the driven gear
2. A combination of bevel gears that transfer power from the motor to the wheels
3. Place where wheels were first attached to carts and chariots
6. Term describing two gears whose teeth are engaged (interlocked) together
9. Straight-cut gears that are the simplest and most common type of gear.
11. This is increased when the driver is smaller than the driven gear
13. A gear with deep, wide teeth that meshes with a chain to transmit power and increase or decrease torque
15. The type of wheel first used to make clay bowls
16. A twisting force
17. Gear within gear train to which motion is transferred
18. A comparison in mathematical terms between two or more gears in a gear train.
22. What you should do with idler gears when determining the gear ratio within a gear train
24. Type of gears used to change the direction of motion.