Bike Related Products

Bikes are clear examples of what a mechanical or structural engineer can do using several simple items.  I think it is interesting to take the bike apart and look at the parts one by one.  For example, take the chain.  This connects to the pedals which is powered by the person's feet, and in turn connects to the rear wheel to drive the bike.  The chain is made of several mechanical joints and steel with certain metallic properties to make it strong, lightweight, and resistant to corrosion.  I decided to make keychains out of bike chain since it is simple, unique, and could appeal to numerous types of people.  The key chains sell for around 6 dollars and here is a picture of one of my products: