2.1 Brainstorming


Design 1: Marcus 




This design has 3 wheels. 1 wheel located in front 2 located at the back. The wheels are made out of used CDs.

2 styrofoams are placed on satay sticks to elevate a platform for the mousetrap. This platform will be made out of cardboard.

The front wheel is attached to 2 satay sticks. The wheel is attached to the car by securing/ sticking the 2 satay sticks into the styrofoam.

The main materials are cardboard and satay sticks to take into account the weight of the materials.

Design 2: Zi Heng





Chassis + Positing of Mousetrap

The Chassis here is constructed using Corrugated Plastic Cardboard. This is taking into consideration the fact that we want out mousetrap car to be as light as possible. The chassis would be the exact same shape as the mousetrap to allow for easy mounting.

Axles

The axles here are built using Wooden sticks (can be retrieved from Daiso). The point here is to make the axles as stable as possible to prevent power loss over bent axles. The bearings for the shafts are also made of wood. This combination allows for minimal friction in the drivetrain system.

Wheels

The wheels here are made of Corrugated Plastic Cardboard. This is to make sure that the wheels are stable but light as well. I preferred using Corrugated Plastic Cardboard instead of CDs because a CD is too thin and I am worried it might flex and bend, causing power loss to the drivetrain system. So, Corrugated Plastic Cardboard wheels are used. We intend to cut the wheels to be as large as possible because the larger the circumference of the wheel, the faster the mousetrap car will travel.

Lever arm & String Type

For the lever, we have also decided to use the same wood as the axles because we needed to make sure that the lever was stable and not snap in the middle of our run. We have also decided to make the lever as long as possible, because M = Fd, so the longer the lever the further our mousetrap car can travel. To attach the string to the lever and shaft, we can just drill a hole into each of the wooden sticks and tie a knot in each of them, thus securing the strings on both the lever and the axle. We can then use the axle as a pully system and activate our mousetrap.



Design 3: Joshua Yew


This design has 4 wheels. 2 wheels located in front 2 located at the back. The wheels are made out of wood that is bent to form a wheel, with nothing in the centre, to reduce weight.

2 straws are placed with satay sticks inside to elevate a platform for the mousetrap.

The front wheels are attached a straw to make it lightweight. We will also cut slits on the straw to reduce air resistance.

The main materials are straws and satay sticks to take into account the weight of the materials.

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