Here is my first attempt at a vertical steering wheel go kart. Axel purchased from Bunnings. Body sits on a flat piece of chip board. Fairly heavy duty. This was the challenging part. I used a long bolt for the upright. Notice the wheels are lowered to avoid hitting the bottom of the cart. The steering wheel uses a lock nut. On version 3, I will remove the washer and chisel grooves for the nut to sit in the wood.