I attended a convention in Las Vegas las year, and was amazed by the large (in some cases HUGE) animatronic displays that they have. But, what amazed me even more was the simple designs they were constructed from. A couple of pneumatic cylinders here and there, a costume, and maybe a BOO Box to control it. The only thing that I seem to be having trouble with is the mechanical portion of the design. Figuring out how long to make a metal bar and where to have it pivot, things like that. The closest textbook thing that I could find to this was a college physics book that didn't really help me at all. And I haven't really found anything online either. If anyone has any suggestions, I would greatly apprieciate the help. Thank you all in advance!

Gary