For this assignment, students had to create a kinetic sturcture using a motor
I knew I wanted to make a car so I sketched the different parts to get a rough idea of what I was looking for.
I then hopped onto Fusion 360 and made 2 rectangles and 4 wheels. Furthermore, I punctured holes the size of the baton stick (4mm) around 2/3 of the way down from the top of the rectangles. I then linked up all the pieces together and got the basic shape of the car. I used a pulley-type mechanism to make the wheels spin (showcased later on)
- Rectangle Dimensions (w x l): 25cm x 15cm
- Wheel Dimensions (d): 17cm
- Inner Wheel Dimensions (d): 4mm x
Final Result?
...Or so I though.
If we zoom in the video, it is seen that after spinning the motor for a certain amount of time, the rubber bands begin to fall off thus rendering the back wheel unusable
To combat this issue, I measured the motor with a caliper which turned out to have a 6mm diameter. I then went to Fusion 360 and made a 13mm diameter circle, extruded it by 4mm, finished the sketch, and used the "hole" feature to make a 6mm perforation in order to slide perfectly on the motor. Using the laser cutter to cut wood required a power of 100% with a speed of 12.5mm/s. Problem Solved!
Things I would Change
- Design. I find the design a bit to unpleasing as it looks like a car children make in kindergarden.
- Power. During my testing on different surfaces, I found that the vehicle sometimes did not move due to a lack of power. To fix this, I would switch the current motor for a bigger one or add another motor for a total of two.
- Grip. Adding on to the "power" point, adding more grip to the wheels would greatly increase the vehicle's ability to maneuver different surfaces
- Materials. For this project, I used cardboard which while great for quick prototypes, is not great for final projects because of it's inferior durability