I am currently modeling the real launch pad used by the mighty Saturn Vs during the race to the moon. I am using SolidWorks 2006 and plan on using Plastructs to actually build it. It is going to be 1/70th scale to match Apogee's Saturn V rocket. My situation is this: I need the 7 swing arms to move out of the way before ignition. I plan on using servos for this but am not that knowledgable on the subject. They also need to be water-proof, like food grade servos. Any help will be greatly appreciated. I work with a few electronic engineers but would like some outside advice as well.