• Acid
• Adenine
• Alkali
• Axle
• Base
• Base Pairs
• Beltdrive
• Bishop
• Command
• Cytosine
• Degree
• Deoxyribose
• Distribution of Force
• DNA
• Gear Ratio
• Gear Train
• Guanine
• Hydronium Ion
• Hydroxide Ion
• Indicator
• Input

• King
• Knight
• Lintel
• Nucleotide
• Output
• Pagoda
• Pawn
• Ph
• Post
• Power
• Process
• Program
• Queen
• Rook
• Shaft
• Solution
• Spur Gear
• Thymine
• Transfer
• Twisted Helix
• Work Formula

What is it?

A belt drive is a mechanism that uses belts and pulleys to transfer rotational input energy into output. When you turn one pulley in a belt drive system, another pulley will turn.

Give me an example!

Some belt drive systems contain lots of pulleys. In the belt drive model pictured here, notice that there are a bunch of pulleys and belts transferring rotational motion to many different parts of the same machine! See if you can tell which way each of the axles would turn if just one of them is rotated. Do they all turn in the same direction?