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Gears and Gear Ratios

Terms in this set (23)

Bevel Gear
A gear in which the axis or shaft of the driving wheel forms an angle with the shaft of the wheel driven.
Crown & Pinion
These gears make changes in the direction of rotational motion typically at a 90-degree angle. They can also change speed and torque of the rotational motion and are commonly found on automobile drive trains.
Driving Gear
The gear that is providing the force to produce motion.
Driven Gear
The gear that is receiving the force to produce motion.
Energy
Capacity to do work.
Force
A strength, power, or effort that causes movement of a body or other effects.
Idle Gear
A gear that is inserted into a mechanism that neither increases nor decreases the mechanical advantage but reverses the direction of motion.
Input Speed
Output speed / Gear Ratio
Linear
Made up by or in the form of straight lines.
Mechanism
The working parts of a machine or any system that consists of interrelated parts.
Output Speed
Input Speed x Gear Ratio
Rack & Pinion
The working parts of a machine or any system that consists of interrelated parts.
Gear Ratio
Input Gear Teeth / Output Gear Teeth
Simple Gear Train
This is basically made up of wheels that have teeth cut around their circumference. Gears work on the principle of a lever. When power turns one gear, its teeth in turn force the next gear to move, and so forth. The gear connected to the power source is called the drive gear.
Worm & Wheel
Makes changes in the direction of rotational motion. They can also change the speed and torque of the rotational motion.
Low Gear
for pedalling uphill, use the smallest front sprocket and the largest rear sprocket
High Gear
for pedalling downhill, use the largest front sprocket and the smallest rear sprocket
Force Advantage
Chain wheel turns faster than the rear wheel
Distance Advantage
Back wheel turns faster than the chain wheel
Chain wheel
Front gears of the bicycle
Sprockets
gear wheels on a bicycle
Interconnecting Gears
Rotate in opposite directions
Chain transmission gears
Rotate in the same direction
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