To ensure that his wheelbarrow won't ever tip over with heavy loads, T.S. of Illinois invented a Two-Wheeled Wheelbarrow Conversion. He ran a 2-foot steel rod through the barrow's axle and drilled holes 1 and 3 inches in from both ends. He used two pieces of pipe slipped onto the rod on both sides to serve as spacers. He then added the wheels and inserted cotter pins through the drilled holes to hold them in place.