So this is 100% not jeep related but I figured I could definately get some ideas here. Anyways here at school there is a contest to build a fast or funny boat. Anyways my friends and I decided probably funny since fast would probably require us to exert energy. We are open to anything though. I have kind of done this before with palletes and some plastic 55 gal drums. The 55 gal drums worked good but I am not sure where to find them again. Anyways any ideas, right now we are thinking sofa raft with a grill. Any ideas?
I doubt this is as cheap as you had planned but.... check out the Chesapeak Light Craft website for some ideas. Do a search for "Stitch and glue" boat-building and you will most likely come up with some free plans for a variety of boats. (If you find a file called 10boats.zip or something like that, get it!)
Every year we have a "Bottle-boat Regatta" here and the winners are usually catamarans built by frameing milkjugs into a hull shape with thin plywood used for the deck and sides (bottom is left open). They must paddle across the bay and back. The smart people build double-enders so they dont have to turn the boat around. They all just face the other way and paddle the boat backwards.
i think canis may be onto something! i design swimming pool bulkheads (floating pool dividers). this is what you do: find the weight of what you want to float. 1 cu.ft. of water weighs 62.4 lbs. divide the weight of your object (car) by 62.4 and you know how much water you need to displace. obtain this volume of foam, air chambers, etc. attach it to the object. this is what i'm thinking: find an old wagoneer. remove the frame and drivetrain, glass, interior, heavy stuff. wear lifejackets. flip the body over and fill all everything you can with expanding foam. door seams, body structure, everything. attach small outboard motor to the rear . go. you may want to put a little more than my 45 seconds worth of thought into it than i did...but thats brain-storming at its best! let me know if you have any other questions related to buoyancy. you can check out what i do at www.natare.com. i do all the design work and currently working on an 3'x5' underwater window and bulkhead. matt