This summer I entered an art boat race and decided to make my big bike float. With the help of a friend we made our team and retrofitted my bike so it can now ride on land and float in the water.
Step 1: Gathering your base materials
After I collected a half dozen bikes I picked four of them to use for the four corners of the big bike. For the rear I made sure the rear triangle dimensions were as close as possible. I tried to match the front as well. The pictures show the four bikes I chose set on a chalk outline of the finished bike. I figured out how much room I needed for the seat, and how big I wanted the bike to be. I was limited by the dimensions of a sheet of plywood that I would be using for a roof rack.