A loooooong while back, I came across a neat picture that showed a dismantled 4-cylinder next to a dismantled rotary, and at the bottom it gave a brief explanation of how many total/moving parts each engine had. Anyone happen to have this?

 

Try these links:

http://auto.howstuffworks.com/engine.htm

http://auto.howstuffworks.com/rotary-engine.htm

 

Great site. Enjoyed checking it out for sure. Thanks.

 

...Yeah, definitely a cool link. Check it out if you haven't seen it yet.