Bicycle Chain Problem
 

Okay, here's the problem.

I need to have a bicycle chain interact with either a cog, sprocket or chain wheel...whatever you want to call it.

The chain is built, the cog is built and the pedals work.

I would imagine that it would be done via a path, with the chain following said path. However, I would like the pedals to drive the chain, via dynamics...if possible.

Any suggestions or ideas. Are there any tutorials or case studies that anybody knows about?

Thanks in advance!

please do not double post