| Mechanical gears are round shaped wheels that | | | | shape. |
| has teethes which mesh with other gear | | | | Generally the units of gear ratio are measured |
| teeth.The main aspect is the transfer of power | | | | using gear radius. Since gears are rough circles |
| must be complete without slippage. Depending on | | | | they cannot have ratio. |
| the perfect design and architecture, they output | | | | Two gears in meshing pairs help us to derive a |
| different speeds or torques from the input power | | | | pitch radius. This radius cannot help us to derive |
| source. Gear not only meshes with another gear | | | | the output speed perfectly .Generally speaking the |
| but also with any device that has compatible | | | | torque ratio is equal to the ratio of radii whereas |
| teeth. | | | | the velocity ratio is vice versa. There is no |
| Mechanical advantage of a gear is derived by | | | | complete transfer of energy from torque to |
| varying the combination of gears of unequal sizes. | | | | velocity as a varied amount of friction is |
| Gear Ratio is the term used to measure gears | | | | experienced due to the teethes. They also cause |
| and it is derived from the arrangements of gears. | | | | some latency. Technology is striving its best to |
| The unit of gears are number of teethes or gear | | | | bring this velocity ratio to consistency by varying |
| diameter. | | | | the teeth shape. The ideal shape is the involutes |
| Mechanical advantage of a gear can be gained by | | | | one. |
| doing intermeshing gears in motion. | | | | On the contrary, there are misleading cases |
| (Speed A * Number of teeth A) = (Speed B * | | | | where the term gear is referenced for parts of |
| Number of teeth B) | | | | machines just because they perform equivalent |
| This ratio is known as the gear ratio where 'A' | | | | tasks like them. |
| and 'B' are gears of same shape or different | | | | |