When I finished the prototype, I realized that one of the platforms was too low and I switched it with something else. Another change I made was supporting the Legos more (they kept falling apart). The biggest change siliconing was everything down. The final design had to have everything pasted. Two more changes that I made to my machine are... I changed to a pulley at the end and I made the hole for the bar at the Tetherball smaller so the pole does not lean. A couple of my problems are that it was hard to make a basket that fit the ball at the end. The next problem I had was getting everything to work, not just one piece. My last problem was that in the beginning the lever had to fall enough so it did not get in the way of the ball but it had to have a big enough other side of the fulcrum that the train had enough power to make the lever
When I finished the prototype, I realized that one of the platforms was too low and I switched it with something else. Another change I made was supporting the Legos more (they kept falling apart). The biggest change siliconing was everything down. The final design had to have everything pasted. Two more changes that I made to my machine are... I changed to a pulley at the end and I made the hole for the bar at the Tetherball smaller so the pole does not lean. A couple of my problems are that it was hard to make a basket that fit the ball at the end. The next problem I had was getting everything to work, not just one piece. My last problem was that in the beginning the lever had to fall enough so it did not get in the way of the ball but it had to have a big enough other side of the fulcrum that the train had enough power to make the lever