Some analytical drawings.

I started by drawing a long piece of chain in a pile. I used tonal in one section, stippling in another section and just left the last section as a line drawing.

 

Then I did a quick charcoal sketch of a large peice of a link I found in my garage. :)

Next, I did two paintings. One of a bike link and the other was of another type of chain I got.

Lastly, I did two pastel drawing, again one was of chainsand their movement and the next was the movement of bike chains.