Egg Car Project 03-03 Exploring Axles and Wheels

One strategy Naela and I tried to use to make wheels that roll were to put a straightened paperclip through a straw, then put a lifesaver mint on each end of the paperclip. We then bent each end of the paperclip upwards so that the lifesaver would not fall off the paperclip. We then use a piece of blue painter’s tape to tape the axle and wheel We came up with this idea after reading AHC Arts and Craft’s article about making wheels and axles. This idea had a few issues though. One issue was that the wheels wouldn’t actually turn properly. This issue was due to the fact that there was space between the piece of cardboard and the lifesaver mint. This issue could have been prevented by crumpling up a piece of blue painter’s tape, and pushing it onto the paperclip directly next to the lifesaver min, so that it could prevent the lifesaver from falling onto its side. A second issue with this strategy was that occasionally, the lifesaver would still fall off the paperclip despite the fact that we bent the end so it would prevent it from falling off. (LOL fail!) This issue could have been prevented by taking a piece of blue painter’s tape, and taping the bent edge of the paperclip to the lifesaver mint itself; make sure that the piece of painter’s tape cover the entire hole in the lifesaver mint. This prevented the lifesaver mint from falling off the paperclip since it taped the paperclip to the wheel itself. The third and final issue we encountered with this strategy, was that the wheels, the lifesaver mints, were really fragile. This issue could be prevented by making sure your wheel doesn’t crash or hit anything hard. Naela and I fixed the wheel by taking two pieces of blue painter’s tape, and taped the wheel back together. (Improvise!) A second strategy Naela and I tried, was to put a straightened paperclip through a straw, then put a gum ball on each end of the paperclip. This strategy worked better than the one with the lifesaver mint, since the gum ball actually stayed in place, unlike the lifesaver mint, which moved around a lot. We got the idea after making the same axle with lifesaver mints, which didn’t work that well, and wondered what would happen if we replaced the lifesaver mints with gum balls. However, this axle had its own problem. It was hard to put the paperclip right in the center of the gum ball, so the axle would always go off to one side, instead of going straight. This issue could be prevented by putting the paperclip exactly in the center of the gum balls, which is extremely difficult.

For my car prototype, I think I’m going to use:

-two straws

– 2 wooden dowels

-2 wooden wheels

-2×4

-popsicle sticks

-hot glue gun

-hot glue

-screws

-screwdriver

-neodymium magnets

-small cloth pouch (big enough to hold egg in it)

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Egg Car Project – Discover

Egg Car Project – Formulate The Problem

The task I need to solve in the egg car project is to design and create a car that could carry an egg down a steep ramp, hit a wall, and still keep the egg intact.

In my opinion, I think the most important “knows” about this project is that the car with the egg inside, will go down a steep ramp, hit a wall, and still keep the egg. Also that there are 3 checkpoints in the project, the first checkpoint is on January 17, where the car needs to be able to roll, the second checkpoint is on January 31, where we need to increase the net force of our car, meaning that we need to make our car accelerate faster, the third and final checkpoint, is on February 15, where we need to reduce the collision force, which means that we need to protect your egg. Also, the car needs to have at least 2 safety features built-in, and has to have an easily accessible “seat” for the egg. Finally, the car can’t be more than 15 centimeters on any side.

One important “need-to-knows” is how high/how steep the ramp is. Also another important “need-to-know” is whether there are material restrictions. I would also like to know whether there is a minimum amount of posts we need to publish, or if it’s up to us. Finally, are there going to be a weight and material restriction?

One next steps for solving this task is to ask Ben some of the questions I have. I could also start to come up with design ideas I have for the car, and begin to think about possible materials that I might use. During class lessons I could pay attention, and ask for help when I need help.

Egg Car Project – Awareness Of Constraints

One constraint of the egg car project is time. Our car needs to be able to roll by January 17. The cars acceleration would need to be increased by January 31. Finally, the collision force of the car must be reduced by February 15. Another constraint of the egg car project is the dimensions of the car. The car can’t be more than 15 centimeters long on any side.