I have a little 4X7 ft trailer my father made around 1962. It's got both coil and leaf springs and is made from angle iron. I believe he pulled the axle out of an old car (front end) and then machined hubs to take small wheels. I'm replacing the plywood floor today, just finishedpainting it and puttingnew lights on it. It'd sat in back of my shop for almost 20 years and the paint/wiring//floor was shot.