Well, it's not an big elevator. Just a small one man cage, lowered by an steel rope. Thought such a thing would make sense,so to resupply in the field and easier evacuate wounded. Here a pic to better see it: [link]
Thanks a lot for the compliments! I'm using GoogleSketchup, it is for free, although there is a pro version for money, which you shouldn't need, as all the necessary tools are in the free version. You'll find some very helpful plugins here: [link] , though you wont necessarily need the first one, but the rest is for free as well Some more with a good overview here: [link]
Good tutorials are all over youtube and a fast one which explains pretty everything about how to model is here: [link] [link] So hope this'll help getting started!