I'm calling this operation:speed or bust.
Building this to be silly fast, so I'm using my Thunder Tiger .46 Pro on a Jettstream to power it.
3/16" birch 5-ply plywood, and some 1/8" birch plywood for the sponson/tub skin.
14" wide, 20" overall length. Sponsons are 2"w X 2"h X 9" overall length. Tub is 4"w X 17.5" X 1.5" deep at transom
I mocked up 1 hull but deemed it too big for the .46 - It was 18"w x 24" l so I made a smaller one. here's the two side by side:
This is where I'm at right now; The foam is only temporary, but gives an idea of size since I dont have the sponsons cut from the plywood yet. As pictured with the foam, The hull weighs 1 pound 9 1/4oz. Its one ounce less without the foam. I'm hoping for less than 4lbs RTR, but we'll see. Going cheap on this one.
I should have the sponsons made today and get everything sanded and glued together. I have some mods to make to the engine stand, but I hope to be ready to glue later today.