“Be like water making its way through cracks. Do not be assertive, but adjust to the object, and you shall find a way around or through it. If nothing within you stays rigid, outward things will disclose themselves. Empty your mind, be formless. Shapeless, like water. If you put water into a cup, it becomes the cup. You put water into a bottle and it becomes the bottle. You put it in a teapot, it becomes the teapot. Now, water can flow or it can crash. Be water, my friend.” ― Bruce Lee
Drake’s final solar car design was made using Tinkercad. He also created a prototype with LEGO, but he didn’t have motors to test it. His original plan was to make it a single print with all parts moving properly, but after considering the supports needed and cleanup needed it was best to make it into individual parts to print and then assemble. He received help using the 3D printer, but all of the work of building the design was done completely independently with occasional reviews and feedback. See the following short video for the assembled design view of Drake’s solar car plan and the separated parts in Tinkercad: https://youtu.be/rfhyPbqrs4A. With 3D printing issues, he decided to remove the top portion of his chassis for car that stays low to the ground. His original plan included a ball joint to let the solar panel adjust position. The car is designed so that all four wheels are moved by the motor for a better grip off the starting line.
- Why do cars have wings or spoilers on the back?
Drake learned that cars have to deal with the same forces as airplanes. Here’s a great video he found during his research to learn about aerodynamics. It inspired him to want to build a car in the shape of a water drop. https://youtu.be/AXjiThF1LXU
- How do we change the direction of rotation?
Drake found a great video about bevel gears and decided to use them in his solar car design: https://www.youtube.com/watch?v=44eUqnOGxGU&t=64s
Drake went through a lot of iteration in his design, which meant many attempts printing, and was unable to do a test run with the solar panel in place, but the parts move properly. He had to assemble prints that were successful enough, but wasn’t able to build a completely enclosed water drop shaped shell as planned.