Tell us about yourself!
I have not made my own instructable. I brazed the attachment for the sidecar to the bike. I have the sidecar on the right hand side of the bike instead of the left, and I reinforced the aluminum frame and wheel so that it isn't reliant on being attached on just one side of the wheel. It isn't in the pictures, but I put a square steel bar across the top-outside aluminum piece that's holding the other side of the wheel to prevent the aluminum from bending. The first piece that I had there started to bend around the wheel axle and crack. I have the sidecar mounted slightly upwards on the frame, so I also put some reinforcement pieces between the sidecar and the frame. I just made some triangular pieces of wood that wedge between the frame and the sidecar.
I'm in the process of building this right now. How thick was the plywood that you used for the sides? I had some pretty thin plywood and after soaking it for a little while, it still cracked when I tried to curve it. Im headed out tomorrow to get 1/8" thick plywood in hopes that will work. I made some upgrades to the design and I may end up making my own instructable for the modifications that I made. I supported both sides of the sidecar wheel and cut channels into the aluminum so that they acted like dropouts for the wheel so that way it could be adjusted for height.